Bug 173398

Summary: kernel dm: Record I/O timing statistics
Product: Red Hat Enterprise Linux 4 Reporter: Alasdair Kergon <agk>
Component: kernelAssignee: Alasdair Kergon <agk>
Status: CLOSED CURRENTRELEASE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: jbaron, jnomura, kueda
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Hardware: All   
OS: Linux   
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Fixed In Version: U3 Doc Type: Bug Fix
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Last Closed: 2006-03-24 15:35:07 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 168483    
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Description Alasdair Kergon 2005-11-16 22:56:14 UTC 
Also store time-related disk stats.

The start time is added to struct dm_io, an existing structure
allocated privately internally within dm and attached to each
incoming bio.
Comment 2 Jun'ichi Nomura (Red Hat) 2005-11-18 19:46:23 UTC 
Test case was posted in Comment#18 of BZ#168483.