Sql server read demand vs physical disk reads delivered

Hi All,

I would like to know if it is possible to capture perfmon or other counters to correlate the physical reads issued by the SQL Server Engine to the number of reads the physical disk delivers at a given moment in time. For instance this could show SQL Server issues 3000 (page) reads per second at a point in time, while the disk is processing reads at 200 reads per sec.

Can anyone tell me if this is possible using either perfmon counters or maybe by periodically gathering IO stats from dynamic management views?

asked Apr 06 '11 at 08:38 AM in Default

Jos Menhart
222 ● 5 ● 7 ● 7

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2 answers:

You can combine perfmon with profiler, the outputs can be synched-up so you can see what query caused what sort of hardware load at the O/S level.

Check out Brent Ozar's great tutorial: SQL Server Perfmon Counters Tutorial

answered Apr 06 '11 at 12:54 PM

WilliamD
25.3k ● 16 ● 18 ● 41

I have correlated profiler with perfmon before, but this does not give me exactly what I want.

I would like to end up with a table like this:

alt text

Apr 07 '11 at 02:49 AM Jos Menhart

Have you tried taking the data from the correlated information and transforming that inside excel?

Apr 07 '11 at 04:10 AM WilliamD

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Just to add an example on what @WilliamD suggested on how you can integrate perfmon with profiler trace to correlate each SQL statement and performance counters. Here and here are a tutorial on how to do it.