Red Hat Bugzilla – Bug 637308
[RFE] widen the blkfront ring buffers to more than one page
Last modified: 2011-09-06 08:58:30 EDT
Created attachment 449523 [details]
Amazon-provided kernel patch
Amazon proposed a patch to get better performance out of EBS-backed AMIs. It is based on 2.6.35, and well tested according to them.
I've attached it here for review & consideration.
I see what they're doing, and looks ok, but we should really push stuff like this upstream first. Is Amazon planning on posting this patch to xen-devel and lkml? Or should we take it through the phases?
The backend part is missing. Maybe this is a private Amazon patch? We would need to include that in our RHEL5 kernel first. I'm cloning this bug for RHEL5 too.
Ben, did you (plan to) engage upstream at all with this patch?
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
This request was erroneously denied for the current release of Red Hat
Enterprise Linux. The error has been fixed and this request has been
re-proposed for the current release.
This request was erroneously denied for the current release of
Red Hat Enterprise Linux. The error has been fixed and this
request has been re-proposed for the current release.
Please see bug 656362 comment 5.