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Bug 1285624 - AIO is processing only 1 request, even if >1 requests in virtio
Summary: AIO is processing only 1 request, even if >1 requests in virtio
Keywords:
Status: CLOSED DUPLICATE of bug 1243548
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.2
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Stefan Hajnoczi
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1243548
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-11-26 05:20 UTC by Stefan Hajnoczi
Modified: 2016-06-17 14:48 UTC (History)
13 users (show)

Fixed In Version: qemu-kvm-rhev-2.5.0-1.el7
Doc Type: Bug Fix
Doc Text:
When QEMU was configured with the aio=native parameter, KVM virtual machines were slowed significantly. With this update, asynchronous I/O (AIO) can correctly process more than one request at a time, and using aio=native no longer has a negative impact on guest performance.
Clone Of: 1243548
Environment:
Last Closed: 2016-03-17 07:33:27 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Comment 2 Stefan Hajnoczi 2015-11-26 08:37:24 UTC
Cloned for RHEL 7.2.z.  The RHEL 7.3 fix will come from upstream via rebase.

Comment 3 Stefan Hajnoczi 2016-02-24 09:36:20 UTC
Setting RHEL 7.2.z flag.  For RHEL 7.3, please see bz#1243548.


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