Bug 472818 - reassess the default I/O scheduler for RHEL
reassess the default I/O scheduler for RHEL
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
: rc
: ---
Assigned To: Jeff Moyer
Red Hat Kernel QE team
: TestOnly
Depends On:
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Reported: 2008-11-24 15:32 EST by Jeff Moyer
Modified: 2010-11-11 09:41 EST (History)
5 users (show)

See Also:
Fixed In Version: 2.6.32-18.el6
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2010-11-11 09:41:37 EST
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Jeff Moyer 2008-11-24 15:32:14 EST
Description of problem:

The default I/O scheduler for the kernel is cfq, and RHEL inherits this.  Let's reassess this based on performance numbers in a variety of workloads that our customers care about.
Comment 1 RHEL Product and Program Management 2009-06-15 17:02:08 EDT
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
Comment 6 Mike Gahagan 2010-08-24 17:13:33 EDT
cfq is the default IO scheduler in 6.0. Performance and scheduling issues that have come are being handled by separate bugs so I think we can go ahead and verify this one.
Comment 7 releng-rhel@redhat.com 2010-11-11 09:41:37 EST
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.

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