Survey: what is the highest wait on your system?

 

 

Wait Types (Paul S. Randal)

 

ajuda e muito esses scripts

http://www.sqlskills.com/blogs/paul/survey-what-is-the-highest-wait-on-your-system/

 

WITH Waits AS
(SELECT
wait_type,
wait_time_ms / 1000.0 AS WaitS,
(wait_time_ms – signal_wait_time_ms) / 1000.0 AS ResourceS,
signal_wait_time_ms / 1000.0 AS SignalS,
waiting_tasks_count AS WaitCount,
100.0 * wait_time_ms / SUM (wait_time_ms) OVER() AS Percentage,
ROW_NUMBER() OVER(ORDER BY wait_time_ms DESC) AS RowNum
FROM sys.dm_os_wait_stats
WHERE wait_type NOT IN (
‘CLR_SEMAPHORE’, ‘LAZYWRITER_SLEEP’, ‘RESOURCE_QUEUE’, ‘SLEEP_TASK’,
‘SLEEP_SYSTEMTASK’, ‘SQLTRACE_BUFFER_FLUSH’, ‘WAITFOR’, ‘LOGMGR_QUEUE’,
‘CHECKPOINT_QUEUE’, ‘REQUEST_FOR_DEADLOCK_SEARCH’, ‘XE_TIMER_EVENT’, ‘BROKER_TO_FLUSH’,
‘BROKER_TASK_STOP’, ‘CLR_MANUAL_EVENT’, ‘CLR_AUTO_EVENT’, ‘DISPATCHER_QUEUE_SEMAPHORE’,
‘FT_IFTS_SCHEDULER_IDLE_WAIT’, ‘XE_DISPATCHER_WAIT’, ‘XE_DISPATCHER_JOIN’, ‘BROKER_EVENTHANDLER’,
‘TRACEWRITE’, ‘FT_IFTSHC_MUTEX’, ‘SQLTRACE_INCREMENTAL_FLUSH_SLEEP’)
)
SELECT
W1.wait_type AS WaitType,
CAST (W1.WaitS AS DECIMAL(14, 2)) AS Wait_S,
CAST (W1.ResourceS AS DECIMAL(14, 2)) AS Resource_S,
CAST (W1.SignalS AS DECIMAL(14, 2)) AS Signal_S,
W1.WaitCount AS WaitCount,
CAST (W1.Percentage AS DECIMAL(4, 2)) AS Percentage
FROM Waits AS W1
INNER JOIN Waits AS W2
ON W2.RowNum <= W1.RowNum
GROUP BY W1.RowNum, W1.wait_type, W1.WaitS, W1.ResourceS, W1.SignalS, W1.WaitCount, W1.Percentage
HAVING SUM (W2.Percentage) – W1.Percentage < 95; — percentage threshold
GO

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Sobre Rodrigo Duda

- Amo a Deus - Casado e tenho um garotão - Prof. Escola Bíblica Dominical - ( Maior e mais antiga faculdade de Teólogos no mundo ) - Na área de informática estou desde muleque. Já profissional apartir de 2004, chegando hoje com conhecimentos em SAB B1, SeniorERP, Windows Server, SQL, VMware, Linux, Infra, Projetos, Telecom. Ver todos os artigos de Rodrigo Duda

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