Wait
Author: s | 2025-04-24
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wait, waited, waits, waiting- WordWeb dictionary definition
14.17.2 Monitoring InnoDB Mutex Waits Using Performance Schema A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given time can have access to a common resource. When two or more threads executing in the server need to access the same resource, the threads compete against each other. The first thread to obtain a lock on the mutex causes the other threads to wait until the lock is released. For InnoDB mutexes that are instrumented, mutex waits can be monitored using Performance Schema. Wait event data collected in Performance Schema tables can help identify mutexes with the most waits or the greatest total wait time, for example. The following example demonstrates how to enable InnoDB mutex wait instruments, how to enable associated consumers, and how to query wait event data. To view available InnoDB mutex wait instruments, query the Performance Schema setup_instruments table, as shown below. All InnoDB mutex wait instruments are disabled by default. mysql> SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE '%wait/synch/mutex/innodb%';+-------------------------------------------------------+---------+-------+| NAME | ENABLED | TIMED |+-------------------------------------------------------+---------+-------+| wait/synch/mutex/innodb/commit_cond_mutex | NO | NO || wait/synch/mutex/innodb/innobase_share_mutex | NO | NO || wait/synch/mutex/innodb/autoinc_mutex | NO | NO || wait/synch/mutex/innodb/buf_pool_mutex | NO | NO || wait/synch/mutex/innodb/buf_pool_zip_mutex | NO | NO || wait/synch/mutex/innodb/cache_last_read_mutex | NO | NO || wait/synch/mutex/innodb/dict_foreign_err_mutex | NO | NO || wait/synch/mutex/innodb/dict_sys_mutex | NO | NO || wait/synch/mutex/innodb/recalc_pool_mutex | NO | NO || wait/synch/mutex/innodb/file_format_max_mutex | NO | NO || wait/synch/mutex/innodb/fil_system_mutex | NO | NO || wait/synch/mutex/innodb/flush_list_mutex | NO | NO || wait/synch/mutex/innodb/fts_bg_threads_mutex | NO | NO || wait/synch/mutex/innodb/fts_delete_mutex | NO | NO || wait/synch/mutex/innodb/fts_optimize_mutex | NO | NO || wait/synch/mutex/innodb/fts_doc_id_mutex | NO | NO || wait/synch/mutex/innodb/log_flush_order_mutex | NO | NO || wait/synch/mutex/innodb/hash_table_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_bitmap_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_pessimistic_insert_mutex | NO | NO || wait/synch/mutex/innodb/log_sys_mutex | NO | NO || wait/synch/mutex/innodb/page_zip_stat_per_index_mutex | NO | NO || wait/synch/mutex/innodb/purge_sys_pq_mutex | NO | NO || wait/synch/mutex/innodb/recv_sys_mutex | NO | NO || wait/synch/mutex/innodb/recv_writer_mutex | NO | NO || wait/synch/mutex/innodb/redo_rseg_mutex | NO | NO || wait/synch/mutex/innodb/noredo_rseg_mutex | NO | NO || wait/synch/mutex/innodb/rw_lock_list_mutex | NO | NO || wait/synch/mutex/innodb/rw_lock_mutex | NO | NO || wait/synch/mutex/innodb/srv_dict_tmpfile_mutex | NO | NO || wait/synch/mutex/innodb/srv_innodb_monitor_mutex | NO | NO || wait/synch/mutex/innodb/srv_misc_tmpfile_mutex | NO | NO || wait/synch/mutex/innodb/srv_monitor_file_mutex | NO | NO || wait/synch/mutex/innodb/buf_dblwr_mutex | NO | NO || wait/synch/mutex/innodb/trx_undo_mutex | NO | NO || wait/synch/mutex/innodb/trx_pool_mutex | NO | NO || wait/synch/mutex/innodb/trx_pool_manager_mutex | NO | NO || wait/synch/mutex/innodb/srv_sys_mutex | NO | NO || wait/synch/mutex/innodb/lock_mutex | NO | NO || wait/synch/mutex/innodb/lock_wait_mutex | NO | NO || wait/synch/mutex/innodb/trx_mutex | NO | NO || wait/synch/mutex/innodb/srv_threads_mutex | NO | NO || wait/synch/mutex/innodb/rtr_active_mutex | NO | NO || wait/synch/mutex/innodb/rtr_match_mutex | NO | NO || wait/synch/mutex/innodb/rtr_path_mutex | NO | NO || wait/synch/mutex/innodb/rtr_ssn_mutex | NO | NO || wait/synch/mutex/innodb/trx_sys_mutex | NO | NO || wait/synch/mutex/innodb/zip_pad_mutex | NO | NO |+-------------------------------------------------------+---------+-------+49 rows in set (0.02 sec) Some InnoDB mutex instances are created at server startup and are only instrumented if the associated instrument is also enabled at server startup.
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Is presented in descending order, by the number of summarized wait events (COUNT_STAR). You can adjust the ORDER BY clause to order the data by total wait time. mysql> SELECT EVENT_NAME, COUNT_STAR, SUM_TIMER_WAIT/1000000000 SUM_TIMER_WAIT_MS FROM performance_schema.events_waits_summary_global_by_event_name WHERE SUM_TIMER_WAIT > 0 AND EVENT_NAME LIKE 'wait/synch/mutex/innodb/%' ORDER BY COUNT_STAR DESC;+--------------------------------------------------+------------+-------------------+| EVENT_NAME | COUNT_STAR | SUM_TIMER_WAIT_MS |+--------------------------------------------------+------------+-------------------+| wait/synch/mutex/innodb/os_mutex | 78831 | 10.3283 || wait/synch/mutex/innodb/log_sys_mutex | 41488 | 6510.3233 || wait/synch/mutex/innodb/trx_sys_mutex | 29770 | 1107.9687 || wait/synch/mutex/innodb/lock_mutex | 24212 | 104.0724 || wait/synch/mutex/innodb/trx_mutex | 22756 | 1.9421 || wait/synch/mutex/innodb/rseg_mutex | 20333 | 3.6220 || wait/synch/mutex/innodb/dict_sys_mutex | 13422 | 2.2284 || wait/synch/mutex/innodb/mutex_list_mutex | 12694 | 344.1164 || wait/synch/mutex/innodb/fil_system_mutex | 9208 | 0.9542 || wait/synch/mutex/innodb/rw_lock_list_mutex | 8304 | 0.1794 || wait/synch/mutex/innodb/trx_undo_mutex | 6190 | 0.6801 || wait/synch/mutex/innodb/buf_pool_mutex | 2869 | 29.4623 || wait/synch/mutex/innodb/innobase_share_mutex | 2005 | 0.1349 || wait/synch/mutex/innodb/flush_list_mutex | 1274 | 0.1300 || wait/synch/mutex/innodb/file_format_max_mutex | 1016 | 0.0469 || wait/synch/mutex/innodb/purge_sys_bh_mutex | 1004 | 0.0326 || wait/synch/mutex/innodb/buf_dblwr_mutex | 640 | 0.0437 || wait/synch/mutex/innodb/log_flush_order_mutex | 437 | 0.0510 || wait/synch/mutex/innodb/recv_sys_mutex | 394 | 0.0202 || wait/synch/mutex/innodb/srv_sys_mutex | 169 | 0.5259 || wait/synch/mutex/innodb/lock_wait_mutex | 154 | 0.1172 || wait/synch/mutex/innodb/ibuf_mutex | 9 | 0.0027 || wait/synch/mutex/innodb/srv_innodb_monitor_mutex | 2 | 0.0009 || wait/synch/mutex/innodb/ut_list_mutex | 1 | 0.0001 || wait/synch/mutex/innodb/recv_writer_mutex | 1 | 0.0005 |+--------------------------------------------------+------------+-------------------+25 rows in set (0.01 sec)Note The preceding result set includes wait event data produced during the startup process. To exclude this data, you can truncate the events_waits_summary_global_by_event_name table immediately after startup and before running your workload. However, the truncate operation itself may produce a negligible amount wait event data. mysql> TRUNCATE performance_schema.events_waits_summary_global_by_event_name;Tentkotta - Wait. Wait. Wait!!!! STOP SCROLLING.
WAIT, verb intransitive [The sense is to stop, or to continue.]1. To stay or rest in expectation; to stop or remain stationary, till the arrival of some person or event. Thus we say, I went to the place of meeting, and there waited an hour for the moderator or chairman. I will go to the hotel, and there wait till you come. We will wait for the mail.2. To stay proceedings, or suspend any business, in expectation of some person, event, or the arrival of some hour. The court was obliged to wait for a witness.3. To rest in expectation and patience.All the days of my appointed time will I wait till my change come. Job 14:14.4. To stay; not to depart.Haste, my dear father, tis no time to wait 5. To stay; to continue by reason of hindrance.6. To lie in ambush, as an enemy.Such ambush waited to intercept thy way.To wait on or upon, to attend, as a servant; to perform menial services for; as, to wait on a gentleman; to wait on the table.To wait on, 1. To attend; to go to see; to visit on business or for ceremony. Tell the gentleman I will wait on him at ten oclock.2. To pay servile or submissive attendance.3. To follow, as a consequence; as the ruin that waits on such a supine temper. [Instead of this, we use await.]4. To look watchfully.It is a point of cunning to wait on him with whom you speak, with your eye. [Unusual.]5. To attend to; to perform.Aaron and his sons shall wait on their priests office. Numbers 3:10, 8. Romans 12:7.6. To be ready to serve; to obey. Psalms 25:3. Proverbs 20:22.To wait at, to attend in service; to perform service at. 1 Corinthians 9:13.To wait for, to watch, as an enemy. Job 15:22.WAIT, verb transitive 1. To stay for; to rest or remain stationary in expectation of the arrival of.Awd with these words, in camps they still abide, and wait with longing eyes their promisd guide. [Elliptical for wait for.]2. To attend; to accompany with submission or respect.He chose a thousand horse, the flowr of all his warlike troops, to wait the funeral. [This use is not justifiable, but by poetical license.]3. To attend as a consequence of something.Such doom waits luxury--[Not in use. In this sense we use attend or attend on.]WAIT, noun Ambush. As a noun, this word. Wait Meme Soundboard; No no Wait Wait! Wait. That's illegal. WAIT WAIT WAIT WAIT WAIT WAIT (don pollo) always has been. No, Wait a minute, I'm Crippled, No. DJ Khaled SaysTentkotta - Wait. Wait. Wait!!!! STOP SCROLLING
| 686322 || 87 | wait/synch/mutex/mysys/THR_LOCK_malloc | 320535 || 88 | wait/synch/mutex/mysys/THR_LOCK_malloc | 339390 || 89 | wait/synch/mutex/mysys/THR_LOCK_malloc | 377100 || 90 | wait/synch/mutex/sql/LOCK_plugin | 614673 || 91 | wait/synch/mutex/sql/LOCK_open | 659925 || 92 | wait/synch/mutex/sql/THD::LOCK_thd_data | 494001 || 93 | wait/synch/mutex/mysys/THR_LOCK_malloc | 222489 || 94 | wait/synch/mutex/mysys/THR_LOCK_malloc | 214947 || 95 | wait/synch/mutex/mysys/LOCK_alarm | 312993 |+----------+-----------------------------------------+------------+ As new events are added to a history table, older events are discarded if the table is full. Summary tables provide aggregated information for all events over time. The tables in this group summarize event data in different ways. To see which instruments have been executed the most times or have taken the most wait time, sort the events_waits_summary_global_by_event_name table on the COUNT_STAR or SUM_TIMER_WAIT column, which correspond to a COUNT(*) or SUM(TIMER_WAIT) value, respectively, calculated over all events: mysql> SELECT EVENT_NAME, COUNT_STAR FROM performance_schema.events_waits_summary_global_by_event_name ORDER BY COUNT_STAR DESC LIMIT 10;+---------------------------------------------------+------------+| EVENT_NAME | COUNT_STAR |+---------------------------------------------------+------------+| wait/synch/mutex/mysys/THR_LOCK_malloc | 6419 || wait/io/file/sql/FRM | 452 || wait/synch/mutex/sql/LOCK_plugin | 337 || wait/synch/mutex/mysys/THR_LOCK_open | 187 || wait/synch/mutex/mysys/LOCK_alarm | 147 || wait/synch/mutex/sql/THD::LOCK_thd_data | 115 || wait/io/file/myisam/kfile | 102 || wait/synch/mutex/sql/LOCK_global_system_variables | 89 || wait/synch/mutex/mysys/THR_LOCK::mutex | 89 || wait/synch/mutex/sql/LOCK_open | 88 |+---------------------------------------------------+------------+mysql> SELECT EVENT_NAME, SUM_TIMER_WAIT FROM performance_schema.events_waits_summary_global_by_event_name ORDER BY SUM_TIMER_WAIT DESC LIMIT 10;+----------------------------------------+----------------+| EVENT_NAME | SUM_TIMER_WAIT |+----------------------------------------+----------------+| wait/io/file/sql/MYSQL_LOG | 1599816582 || wait/synch/mutex/mysys/THR_LOCK_malloc | 1530083250 || wait/io/file/sql/binlog_index | 1385291934 || wait/io/file/sql/FRM | 1292823243 || wait/io/file/myisam/kfile | 411193611 || wait/io/file/myisam/dfile | 322401645 || wait/synch/mutex/mysys/LOCK_alarm | 145126935 || wait/io/file/sql/casetest | 104324715 || wait/synch/mutex/sql/LOCK_plugin | 86027823 || wait/io/file/sql/pid | 72591750 |+----------------------------------------+----------------+ These results show that the THR_LOCK_malloc mutex is “hot,” both in terms of how often it is used and amount of time that threads wait attempting to acquire it.Note The THR_LOCK_malloc mutex is used only in debug builds. In production builds it is not hot because it is nonexistent. Instance tables document whatWait at or wait on or wait in ? - English Language Learners
We can click on it by using the "chain" function. 1.2.2. Now that we have the image we want to click on, we can use the "chain" function to click on it chain( dict(click="demo/edge_toolbar.jpg"), dict(click="demo/google_create_account", wait=1), dict(click="demo/personal_use", wait=1), debug=True ) 1.3. All mouse actions: * click * rightclick * leftclick * doubleclick * tripleclick * scrollup * scrolldown * scrollleft * scrollrightYou can also connect multiple keyboard actions together by using the "chain" function.2.1. Write text - This doesn't work well with non-english character. For this you can use the "pastetext" function. chain( dict(click="demo/notepad.jpg"), dict(write="Hello World!"), debug=True ) 2.2. Paste text - This works well with non-english characters chain( dict(click="demo/notepad.jpg"), dict(pastetext="Straße"), debug=True )2.3. Key combinations chain( dict(click="demo/notepad.jpg", wait=1), dict(write="Hello World!", wait=1), dict(keys2="ctrl+a", wait=1), dict(keys2="ctrl+x", wait=1), dict(keys2="alt+f4", wait=1), # close notepad debug=True ) 2.4. All key actions: * write * pastetext * keys * keys2 - best option overall for key combinations * keys3 * keys4 * copy * pasteWait actions:3.1. Wait until an image appears on the screenThis can used when you are waiting for a window to finish loading completely and you don't know exactly how long that would take. chain( dict(click="demo/notepad.jpg"), dict(waituntil="demo/notepad_opened.jpg", wait=1), dict(write="Hello World!", wait=1), debug=True )3.2. Wait while an image is on the screenApp (window) actions:4.1. Open an app chain( dict(open_app="notepad++.exe", wait=1), dict(waituntil="demo/notepad_opened.jpg", wait=1), dict(write="Hello World!", wait=1), debug=True )4.2. Close an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(close="Notepad", wait=1), debug=True )4.3. Minimize an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(minimize="Notepad", wait=1), debug=True )4.4. Maximize an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(maximize="Notepad", wait=1), debug=True )4.5. Restore an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(minimize="Notepad", wait=1), dict(restore="Notepad", wait=1), debug=True )4.6. All app actions: * open_app * close * startfile * focus * minimize * maximize * restore * msoffice_replace * copy_from * copy_from_toImageHey, wait, wait, wait, wait. Disguise your voice. - Workaholics.
Log to write the transaction commit log record to disk. High average wait times on this wait type indicate that the disk is writing the log slowly and this slows down every transaction. Very frequent waits on this wait type are indicative of doing many small transaction and having to block frequently to wait for COMMIT (remember that all data writes require a transaction and one is implicitly created for each statement if no BEGIN TRANSACTION is explicitly used).IO_COMPLETIONThis wait type occurs for tasks that are waiting for something else that ordinary data IO. Eg. loading an assembly DLL, reading and writing TEMPDB sort files, some special DBCC data reading operations.ASYNC_IO_COMPLETIONThis wait type is mostly associated with backup, restore, database and database file operations.If your wait time analysis finds that IO and disk are important wait types then your should focus on analyzing disk activity.Memory related wait typesRESOURCE_SEMAPHOREThis wait type indicate queries that are waiting for a memory grant. See Understanding SQL Server memory grant. OLTP type workload queries should not require memory grants,, if you see this wait type on an OLTP system then you need to revisit your application design. OLAP workloads often are in need of (sometimes large) memory grants and large wait times on this wait type usually point toward RAM increase upgrades.SOS_VIRTUALMEMORY_LOWAre you still on 32 bit systems? Move on!Network related wait typesASYNC_NETWORK_IOThis wait type indicate that the SQL Server has result sets to send to the application but the application odes not process them. This may indicate a slow network connection. But more often the problem is with the application code, it is either blocking while processing the result set or is requesting a huge result set.CPU, Contention and Concurrency related wait typesLCK_*Locks. All wait types that start with LCK indicate a task suspendedWait Wait Wait Soundboard - Instant Sound Buttons
To ensure that all InnoDB mutex instances are instrumented and enabled, add the following performance-schema-instrument rule to your MySQL configuration file: performance-schema-instrument='wait/synch/mutex/innodb/%=ON' If you do not require wait event data for all InnoDB mutexes, you can disable specific instruments by adding additional performance-schema-instrument rules to your MySQL configuration file. For example, to disable InnoDB mutex wait event instruments related to full-text search, add the following rule: performance-schema-instrument='wait/synch/mutex/innodb/fts%=OFF'Note Rules with a longer prefix such as wait/synch/mutex/innodb/fts% take precedence over rules with shorter prefixes such as wait/synch/mutex/innodb/%. After adding the performance-schema-instrument rules to your configuration file, restart the server. All the InnoDB mutexes except for those related to full text search are enabled. To verify, query the setup_instruments table. The ENABLED and TIMED columns should be set to YES for the instruments that you enabled. mysql> SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE '%wait/synch/mutex/innodb%';+-------------------------------------------------------+---------+-------+| NAME | ENABLED | TIMED |+-------------------------------------------------------+---------+-------+| wait/synch/mutex/innodb/commit_cond_mutex | YES | YES || wait/synch/mutex/innodb/innobase_share_mutex | YES | YES || wait/synch/mutex/innodb/autoinc_mutex | YES | YES |...| wait/synch/mutex/innodb/zip_pad_mutex | YES | YES |+-------------------------------------------------------+---------+-------+49 rows in set (0.00 sec) Enable wait event consumers by updating the setup_consumers table. Wait event consumers are disabled by default. mysql> UPDATE performance_schema.setup_consumers SET enabled = 'YES' WHERE name like 'events_waits%';Query OK, 3 rows affected (0.00 sec)Rows matched: 3 Changed: 3 Warnings: 0 You can verify that wait event consumers are enabled by querying the setup_consumers table. The events_waits_current, events_waits_history, and events_waits_history_long consumers should be enabled. mysql> SELECT * FROM performance_schema.setup_consumers;+----------------------------------+---------+| NAME | ENABLED |+----------------------------------+---------+| events_stages_current | NO || events_stages_history | NO || events_stages_history_long | NO || events_statements_current | YES || events_statements_history | YES || events_statements_history_long | NO || events_transactions_current | YES || events_transactions_history | YES || events_transactions_history_long | NO || events_waits_current | YES || events_waits_history | YES || events_waits_history_long | YES || global_instrumentation | YES || thread_instrumentation | YES || statements_digest | YES |+----------------------------------+---------+15 rows in set (0.00 sec) Once instruments and consumers are enabled, run the workload that you want to monitor. In this example, the mysqlslap load emulation client is used to simulate a workload. $> ./mysqlslap --auto-generate-sql --concurrency=100 --iterations=10 --number-of-queries=1000 --number-char-cols=6 --number-int-cols=6; Query the wait event data. In this example, wait event data is queried from the events_waits_summary_global_by_event_name table which aggregates data found in the events_waits_current, events_waits_history, and events_waits_history_long tables. Data is summarized by event name (EVENT_NAME), which is the name of the instrument that produced the event. Summarized data includes: COUNT_STAR The number of summarized wait events. SUM_TIMER_WAIT The total wait time of the summarized timed wait events. MIN_TIMER_WAIT The minimum wait time of the summarized timed wait events. AVG_TIMER_WAIT The average wait time of the summarized timed wait events. MAX_TIMER_WAIT The maximum wait time of the summarized timed wait events. The following query returns the instrument name (EVENT_NAME), the number of wait events (COUNT_STAR), and the total wait time for the events for that instrument (SUM_TIMER_WAIT). Because waits are timed in picoseconds (trillionths of a second) by default, wait times are divided by 1000000000 to show wait times in milliseconds. Data. Wait Meme Soundboard; No no Wait Wait! Wait. That's illegal. WAIT WAIT WAIT WAIT WAIT WAIT (don pollo) always has been. No, Wait a minute, I'm Crippled, No. DJ Khaled Says
Options for waiting between downloads -wait -random-wait
And lock contention seems to be the next major issue. CXPACKET wait types are right there on top, but we know that most times CXPACKET wait types are just surrogate for other wait types, as discussed above. How about those other with types in the list, like SOS_SCHEDULER_YIELD, PAGELATCH_EX/SH or PAGEIOLATCH_EX/SH/UP?Common wait typesIn order to investigate wait types and wait times, either aggregate or for an individual query, one needs to understand what the wait type names mean. Many of the names are self-describing, some are cryptic in their name and some are down right deceitfully named. I think the best resource to read a detailed description of the names is the Waits and Queues white paper. It has an alphabetical list of wait types, description and what physical resource is correlated with. The white paper is a bit old (it covers SQL Server 2005) but still highly relevant. The wait type names for important resources has not changed since SQL server 2005, what you’ll be missing will be newer wait type names related to post SQL Server 2005 features. The wait types are briefly documented also in the sys.dm_os_wait_types topic on MSDN.Disk and IO related wait typesPAGEIOLATCH_*This is the quintessential IO, data read from disk and write to disk wait type. A task blocked on these wait type is waiting for data to be transferred between the disk and the in-memory data cache (the buffer pool). A system that has high aggregate PAGEIOLATCH_* wait types is very likely memory starved and is spending much time reading data from the disk into the buffer pool. Be careful not to confuse this wait type with the PAGELATCH_* wait type (not the missing IO in the name).WRITELOGThis wait type occurs when a task is issuing a COMMIT and it waits for theGitHub - eficode/wait-for: ./wait-for is a script to wait for another
Managed Kubernetes cluster with a private endpoint. az aks use-dev-spaces -g my-aks-group -n my-aks -e private Required Parameters Name of the managed cluster. Name of resource group. You can configure the default group using az configure --defaults group=. Optional Parameters The endpoint type to be used for a Azure Dev Spaces controller. See for more information. Accepted values: None, Private, Public Name of the new or existing dev space to select. Defaults to an interactive selection experience. Update to the latest Azure Dev Spaces client components. Do not prompt for confirmation. Requires --space. Global Parameters Increase logging verbosity to show all debug logs. Show this help message and exit. Only show errors, suppressing warnings. Output format. Accepted values: json, jsonc, none, table, tsv, yaml, yamlc Name or ID of subscription. You can configure the default subscription using az account set -s NAME_OR_ID. Increase logging verbosity. Use --debug for full debug logs. az aks wait Wait for a managed Kubernetes cluster to reach a desired state. If an operation on a cluster was interrupted or was started with --no-wait, use this command to wait for it to complete. az aks wait --name --resource-group [--created] [--custom] [--deleted] [--exists] [--interval] [--timeout] [--updated] Examples Wait for a cluster to be upgraded, polling every minute for up to thirty minutes. az aks wait -g MyResourceGroup -n MyManagedCluster --updated --interval 60 --timeout 1800 Wait for a managed Kubernetes cluster to reach a desired state (autogenerated) az aks wait --created --interval 60 --name MyManagedCluster --resource-group MyResourceGroup --timeout 1800 Required Parameters Name of the managed cluster. Name of resource group. You can configure the default group using az configure --defaults group=. Optional Parameters Wait until created with 'provisioningState' at 'Succeeded'. Wait until the condition satisfies a custom JMESPath query. E.g. provisioningState!='InProgress', instanceView.statuses[?code=='PowerState/running']. Wait until the resource exists. Polling interval in seconds. Wait until updated with provisioningState at 'Succeeded'. Global Parameters Increase logging verbosity to show all debug logs. Show this help message and exit. Only show errors, suppressing warnings. Output format. Accepted values: json, jsonc, none, table, tsv, yaml, yamlc Name or ID of subscription. You can configure the default subscription using az account set -s NAME_OR_ID. Increase logging verbosity. Use --debug for full debug logs. az aks wait (aks-preview extension) Wait for a managed Kubernetes cluster to reach a desired state. If an operation on a cluster was interrupted or was started with --no-wait, use this command to wait for it to complete. az aks wait --name --resource-group [--created] [--custom] [--deleted] [--exists] [--interval] [--timeout] [--updated] Examples Wait for a cluster to be upgraded, polling every minute for up to thirty minutes. az aks wait -g MyResourceGroup -n MyManagedCluster --updated --interval 60 --timeout 1800 Wait for a managed. Wait Meme Soundboard; No no Wait Wait! Wait. That's illegal. WAIT WAIT WAIT WAIT WAIT WAIT (don pollo) always has been. No, Wait a minute, I'm Crippled, No. DJ Khaled SaysPunisher's No, No, No, Wait, Wait, Wait - Know Your Meme
Types of objects are instrumented. An instrumented object, when used by the server, produces an event. These tables provide event names and explanatory notes or status information. For example, the file_instances table lists instances of instruments for file I/O operations and their associated files: mysql> SELECT * FROM performance_schema.file_instances\G*************************** 1. row *************************** FILE_NAME: /opt/mysql-log/60500/binlog.000007EVENT_NAME: wait/io/file/sql/binlogOPEN_COUNT: 0*************************** 2. row *************************** FILE_NAME: /opt/mysql/60500/data/mysql/tables_priv.MYIEVENT_NAME: wait/io/file/myisam/kfileOPEN_COUNT: 1*************************** 3. row *************************** FILE_NAME: /opt/mysql/60500/data/mysql/columns_priv.MYIEVENT_NAME: wait/io/file/myisam/kfileOPEN_COUNT: 1... Setup tables are used to configure and display monitoring characteristics. For example, setup_instruments lists the set of instruments for which events can be collected and shows which of them are enabled: mysql> SELECT NAME, ENABLED, TIMED FROM performance_schema.setup_instruments;+---------------------------------------------------+---------+-------+| NAME | ENABLED | TIMED |+---------------------------------------------------+---------+-------+...| stage/sql/end | NO | NO || stage/sql/executing | NO | NO || stage/sql/init | NO | NO || stage/sql/insert | NO | NO |...| statement/sql/load | YES | YES || statement/sql/grant | YES | YES || statement/sql/check | YES | YES || statement/sql/flush | YES | YES |...| wait/synch/mutex/sql/LOCK_global_read_lock | YES | YES || wait/synch/mutex/sql/LOCK_global_system_variables | YES | YES || wait/synch/mutex/sql/LOCK_lock_db | YES | YES || wait/synch/mutex/sql/LOCK_manager | YES | YES |...| wait/synch/rwlock/sql/LOCK_grant | YES | YES || wait/synch/rwlock/sql/LOGGER::LOCK_logger | YES | YES || wait/synch/rwlock/sql/LOCK_sys_init_connect | YES | YES || wait/synch/rwlock/sql/LOCK_sys_init_slave | YES | YES |...| wait/io/file/sql/binlog | YES | YES || wait/io/file/sql/binlog_index | YES | YES || wait/io/file/sql/casetest | YES | YES || wait/io/file/sql/dbopt | YES | YES |... To understand how to interpret instrument names, see Section 29.6, “Performance Schema Instrument Naming Conventions”. To control whether events are collected for an instrument, set its ENABLED value to YES or NO. For example: mysql> UPDATE performance_schema.setup_instruments SET ENABLED = 'NO' WHERE NAME = 'wait/synch/mutex/sql/LOCK_mysql_create_db'; The Performance Schema uses collected events to update tables in the performance_schema database, which act as “consumers” of event information. TheComments
14.17.2 Monitoring InnoDB Mutex Waits Using Performance Schema A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given time can have access to a common resource. When two or more threads executing in the server need to access the same resource, the threads compete against each other. The first thread to obtain a lock on the mutex causes the other threads to wait until the lock is released. For InnoDB mutexes that are instrumented, mutex waits can be monitored using Performance Schema. Wait event data collected in Performance Schema tables can help identify mutexes with the most waits or the greatest total wait time, for example. The following example demonstrates how to enable InnoDB mutex wait instruments, how to enable associated consumers, and how to query wait event data. To view available InnoDB mutex wait instruments, query the Performance Schema setup_instruments table, as shown below. All InnoDB mutex wait instruments are disabled by default. mysql> SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE '%wait/synch/mutex/innodb%';+-------------------------------------------------------+---------+-------+| NAME | ENABLED | TIMED |+-------------------------------------------------------+---------+-------+| wait/synch/mutex/innodb/commit_cond_mutex | NO | NO || wait/synch/mutex/innodb/innobase_share_mutex | NO | NO || wait/synch/mutex/innodb/autoinc_mutex | NO | NO || wait/synch/mutex/innodb/buf_pool_mutex | NO | NO || wait/synch/mutex/innodb/buf_pool_zip_mutex | NO | NO || wait/synch/mutex/innodb/cache_last_read_mutex | NO | NO || wait/synch/mutex/innodb/dict_foreign_err_mutex | NO | NO || wait/synch/mutex/innodb/dict_sys_mutex | NO | NO || wait/synch/mutex/innodb/recalc_pool_mutex | NO | NO || wait/synch/mutex/innodb/file_format_max_mutex | NO | NO || wait/synch/mutex/innodb/fil_system_mutex | NO | NO || wait/synch/mutex/innodb/flush_list_mutex | NO | NO || wait/synch/mutex/innodb/fts_bg_threads_mutex | NO | NO || wait/synch/mutex/innodb/fts_delete_mutex | NO | NO || wait/synch/mutex/innodb/fts_optimize_mutex | NO | NO || wait/synch/mutex/innodb/fts_doc_id_mutex | NO | NO || wait/synch/mutex/innodb/log_flush_order_mutex | NO | NO || wait/synch/mutex/innodb/hash_table_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_bitmap_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_mutex | NO | NO || wait/synch/mutex/innodb/ibuf_pessimistic_insert_mutex | NO | NO || wait/synch/mutex/innodb/log_sys_mutex | NO | NO || wait/synch/mutex/innodb/page_zip_stat_per_index_mutex | NO | NO || wait/synch/mutex/innodb/purge_sys_pq_mutex | NO | NO || wait/synch/mutex/innodb/recv_sys_mutex | NO | NO || wait/synch/mutex/innodb/recv_writer_mutex | NO | NO || wait/synch/mutex/innodb/redo_rseg_mutex | NO | NO || wait/synch/mutex/innodb/noredo_rseg_mutex | NO | NO || wait/synch/mutex/innodb/rw_lock_list_mutex | NO | NO || wait/synch/mutex/innodb/rw_lock_mutex | NO | NO || wait/synch/mutex/innodb/srv_dict_tmpfile_mutex | NO | NO || wait/synch/mutex/innodb/srv_innodb_monitor_mutex | NO | NO || wait/synch/mutex/innodb/srv_misc_tmpfile_mutex | NO | NO || wait/synch/mutex/innodb/srv_monitor_file_mutex | NO | NO || wait/synch/mutex/innodb/buf_dblwr_mutex | NO | NO || wait/synch/mutex/innodb/trx_undo_mutex | NO | NO || wait/synch/mutex/innodb/trx_pool_mutex | NO | NO || wait/synch/mutex/innodb/trx_pool_manager_mutex | NO | NO || wait/synch/mutex/innodb/srv_sys_mutex | NO | NO || wait/synch/mutex/innodb/lock_mutex | NO | NO || wait/synch/mutex/innodb/lock_wait_mutex | NO | NO || wait/synch/mutex/innodb/trx_mutex | NO | NO || wait/synch/mutex/innodb/srv_threads_mutex | NO | NO || wait/synch/mutex/innodb/rtr_active_mutex | NO | NO || wait/synch/mutex/innodb/rtr_match_mutex | NO | NO || wait/synch/mutex/innodb/rtr_path_mutex | NO | NO || wait/synch/mutex/innodb/rtr_ssn_mutex | NO | NO || wait/synch/mutex/innodb/trx_sys_mutex | NO | NO || wait/synch/mutex/innodb/zip_pad_mutex | NO | NO |+-------------------------------------------------------+---------+-------+49 rows in set (0.02 sec) Some InnoDB mutex instances are created at server startup and are only instrumented if the associated instrument is also enabled at server startup.
2025-03-30Is presented in descending order, by the number of summarized wait events (COUNT_STAR). You can adjust the ORDER BY clause to order the data by total wait time. mysql> SELECT EVENT_NAME, COUNT_STAR, SUM_TIMER_WAIT/1000000000 SUM_TIMER_WAIT_MS FROM performance_schema.events_waits_summary_global_by_event_name WHERE SUM_TIMER_WAIT > 0 AND EVENT_NAME LIKE 'wait/synch/mutex/innodb/%' ORDER BY COUNT_STAR DESC;+--------------------------------------------------+------------+-------------------+| EVENT_NAME | COUNT_STAR | SUM_TIMER_WAIT_MS |+--------------------------------------------------+------------+-------------------+| wait/synch/mutex/innodb/os_mutex | 78831 | 10.3283 || wait/synch/mutex/innodb/log_sys_mutex | 41488 | 6510.3233 || wait/synch/mutex/innodb/trx_sys_mutex | 29770 | 1107.9687 || wait/synch/mutex/innodb/lock_mutex | 24212 | 104.0724 || wait/synch/mutex/innodb/trx_mutex | 22756 | 1.9421 || wait/synch/mutex/innodb/rseg_mutex | 20333 | 3.6220 || wait/synch/mutex/innodb/dict_sys_mutex | 13422 | 2.2284 || wait/synch/mutex/innodb/mutex_list_mutex | 12694 | 344.1164 || wait/synch/mutex/innodb/fil_system_mutex | 9208 | 0.9542 || wait/synch/mutex/innodb/rw_lock_list_mutex | 8304 | 0.1794 || wait/synch/mutex/innodb/trx_undo_mutex | 6190 | 0.6801 || wait/synch/mutex/innodb/buf_pool_mutex | 2869 | 29.4623 || wait/synch/mutex/innodb/innobase_share_mutex | 2005 | 0.1349 || wait/synch/mutex/innodb/flush_list_mutex | 1274 | 0.1300 || wait/synch/mutex/innodb/file_format_max_mutex | 1016 | 0.0469 || wait/synch/mutex/innodb/purge_sys_bh_mutex | 1004 | 0.0326 || wait/synch/mutex/innodb/buf_dblwr_mutex | 640 | 0.0437 || wait/synch/mutex/innodb/log_flush_order_mutex | 437 | 0.0510 || wait/synch/mutex/innodb/recv_sys_mutex | 394 | 0.0202 || wait/synch/mutex/innodb/srv_sys_mutex | 169 | 0.5259 || wait/synch/mutex/innodb/lock_wait_mutex | 154 | 0.1172 || wait/synch/mutex/innodb/ibuf_mutex | 9 | 0.0027 || wait/synch/mutex/innodb/srv_innodb_monitor_mutex | 2 | 0.0009 || wait/synch/mutex/innodb/ut_list_mutex | 1 | 0.0001 || wait/synch/mutex/innodb/recv_writer_mutex | 1 | 0.0005 |+--------------------------------------------------+------------+-------------------+25 rows in set (0.01 sec)Note The preceding result set includes wait event data produced during the startup process. To exclude this data, you can truncate the events_waits_summary_global_by_event_name table immediately after startup and before running your workload. However, the truncate operation itself may produce a negligible amount wait event data. mysql> TRUNCATE performance_schema.events_waits_summary_global_by_event_name;
2025-04-05| 686322 || 87 | wait/synch/mutex/mysys/THR_LOCK_malloc | 320535 || 88 | wait/synch/mutex/mysys/THR_LOCK_malloc | 339390 || 89 | wait/synch/mutex/mysys/THR_LOCK_malloc | 377100 || 90 | wait/synch/mutex/sql/LOCK_plugin | 614673 || 91 | wait/synch/mutex/sql/LOCK_open | 659925 || 92 | wait/synch/mutex/sql/THD::LOCK_thd_data | 494001 || 93 | wait/synch/mutex/mysys/THR_LOCK_malloc | 222489 || 94 | wait/synch/mutex/mysys/THR_LOCK_malloc | 214947 || 95 | wait/synch/mutex/mysys/LOCK_alarm | 312993 |+----------+-----------------------------------------+------------+ As new events are added to a history table, older events are discarded if the table is full. Summary tables provide aggregated information for all events over time. The tables in this group summarize event data in different ways. To see which instruments have been executed the most times or have taken the most wait time, sort the events_waits_summary_global_by_event_name table on the COUNT_STAR or SUM_TIMER_WAIT column, which correspond to a COUNT(*) or SUM(TIMER_WAIT) value, respectively, calculated over all events: mysql> SELECT EVENT_NAME, COUNT_STAR FROM performance_schema.events_waits_summary_global_by_event_name ORDER BY COUNT_STAR DESC LIMIT 10;+---------------------------------------------------+------------+| EVENT_NAME | COUNT_STAR |+---------------------------------------------------+------------+| wait/synch/mutex/mysys/THR_LOCK_malloc | 6419 || wait/io/file/sql/FRM | 452 || wait/synch/mutex/sql/LOCK_plugin | 337 || wait/synch/mutex/mysys/THR_LOCK_open | 187 || wait/synch/mutex/mysys/LOCK_alarm | 147 || wait/synch/mutex/sql/THD::LOCK_thd_data | 115 || wait/io/file/myisam/kfile | 102 || wait/synch/mutex/sql/LOCK_global_system_variables | 89 || wait/synch/mutex/mysys/THR_LOCK::mutex | 89 || wait/synch/mutex/sql/LOCK_open | 88 |+---------------------------------------------------+------------+mysql> SELECT EVENT_NAME, SUM_TIMER_WAIT FROM performance_schema.events_waits_summary_global_by_event_name ORDER BY SUM_TIMER_WAIT DESC LIMIT 10;+----------------------------------------+----------------+| EVENT_NAME | SUM_TIMER_WAIT |+----------------------------------------+----------------+| wait/io/file/sql/MYSQL_LOG | 1599816582 || wait/synch/mutex/mysys/THR_LOCK_malloc | 1530083250 || wait/io/file/sql/binlog_index | 1385291934 || wait/io/file/sql/FRM | 1292823243 || wait/io/file/myisam/kfile | 411193611 || wait/io/file/myisam/dfile | 322401645 || wait/synch/mutex/mysys/LOCK_alarm | 145126935 || wait/io/file/sql/casetest | 104324715 || wait/synch/mutex/sql/LOCK_plugin | 86027823 || wait/io/file/sql/pid | 72591750 |+----------------------------------------+----------------+ These results show that the THR_LOCK_malloc mutex is “hot,” both in terms of how often it is used and amount of time that threads wait attempting to acquire it.Note The THR_LOCK_malloc mutex is used only in debug builds. In production builds it is not hot because it is nonexistent. Instance tables document what
2025-03-26We can click on it by using the "chain" function. 1.2.2. Now that we have the image we want to click on, we can use the "chain" function to click on it chain( dict(click="demo/edge_toolbar.jpg"), dict(click="demo/google_create_account", wait=1), dict(click="demo/personal_use", wait=1), debug=True ) 1.3. All mouse actions: * click * rightclick * leftclick * doubleclick * tripleclick * scrollup * scrolldown * scrollleft * scrollrightYou can also connect multiple keyboard actions together by using the "chain" function.2.1. Write text - This doesn't work well with non-english character. For this you can use the "pastetext" function. chain( dict(click="demo/notepad.jpg"), dict(write="Hello World!"), debug=True ) 2.2. Paste text - This works well with non-english characters chain( dict(click="demo/notepad.jpg"), dict(pastetext="Straße"), debug=True )2.3. Key combinations chain( dict(click="demo/notepad.jpg", wait=1), dict(write="Hello World!", wait=1), dict(keys2="ctrl+a", wait=1), dict(keys2="ctrl+x", wait=1), dict(keys2="alt+f4", wait=1), # close notepad debug=True ) 2.4. All key actions: * write * pastetext * keys * keys2 - best option overall for key combinations * keys3 * keys4 * copy * pasteWait actions:3.1. Wait until an image appears on the screenThis can used when you are waiting for a window to finish loading completely and you don't know exactly how long that would take. chain( dict(click="demo/notepad.jpg"), dict(waituntil="demo/notepad_opened.jpg", wait=1), dict(write="Hello World!", wait=1), debug=True )3.2. Wait while an image is on the screenApp (window) actions:4.1. Open an app chain( dict(open_app="notepad++.exe", wait=1), dict(waituntil="demo/notepad_opened.jpg", wait=1), dict(write="Hello World!", wait=1), debug=True )4.2. Close an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(close="Notepad", wait=1), debug=True )4.3. Minimize an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(minimize="Notepad", wait=1), debug=True )4.4. Maximize an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(maximize="Notepad", wait=1), debug=True )4.5. Restore an app chain( dict(open_app="notepad++.exe", wait=1), dict(write="Hello World!", wait=1), dict(minimize="Notepad", wait=1), dict(restore="Notepad", wait=1), debug=True )4.6. All app actions: * open_app * close * startfile * focus * minimize * maximize * restore * msoffice_replace * copy_from * copy_from_toImage
2025-04-20