Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Shared mode. Long waits may indicate problems with the disk subsystem. Information from Microsoft®
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The description shown below is the top answer as voted by the Spotlight community.
The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.
PAGEIOLATCH_SH
Category: IO
SQL Server versions: 2000, 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017
What is PAGEIOLATCH_SH?
2 Answers
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answered 3318 days ago
Spotlight Essentials
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PageIOLatch_SH is a Shared buffer page latch. It usually indicates an issues with the storage, however this is not the only cause.
answered 3311 days ago
Iain Shepherd
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This wait is very common for most instances
For each of 4207 instances, we ranked PAGEIOLATCH_SH on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.
Prevalence of PAGEIOLATCH_SH across the Spotlight Population
For 34 % of hours with this wait, average wait time is less than 1.3 ms
For each instance, we found all the recent hours when it had a PAGEIOLATCH_SH wait. We found the average latency for each of those hours.
3749 instances contributed data to this chart