Bug 514241 - Evaluate the need for qemu's virtio_net TX mitigation timer
Summary: Evaluate the need for qemu's virtio_net TX mitigation timer
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: qemu
Version: rawhide
Hardware: All
OS: Linux
high
medium
Target Milestone: ---
Assignee: Justin M. Forbes
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: F12VirtTarget
TreeView+ depends on / blocked
 
Reported: 2009-07-28 14:37 UTC by Mark McLoughlin
Modified: 2013-01-09 21:48 UTC (History)
12 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-03-10 12:13:39 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
qemu-kvm-remove-virtio-net-tx-timer.patch (7.23 KB, patch)
2009-08-12 17:01 UTC, Mark McLoughlin 		no flags Details | Diff
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Description Mark McLoughlin 2009-07-28 14:37:23 UTC 
See bug #504647 where we removed the virtio_net TX mitigation timer for RHEL5.4

We need to re-do that benchmarking on a 2.6.31 kernel in order to evaluate whether removing would benefit Fedora 12

One major difference is that more recent kernels have higher resolution timers, so the timer would be 150us instead of 1ms
Comment 1 Mark McLoughlin 2009-08-12 17:01:09 UTC 
Created attachment 357206 [details]
qemu-kvm-remove-virtio-net-tx-timer.patch

Here's a version of the RHEL5 patch which applies to Fedora 12
Comment 2 Fedora Admin XMLRPC Client 2010-03-09 16:54:10 UTC 
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.
Comment 3 Fedora Admin XMLRPC Client 2010-03-09 17:19:56 UTC 
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.
Comment 4 Dor Laor 2010-03-10 12:13:39 UTC 
I think we can close it since our default should be vhost and it's not relevant there
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