From: Ian Campbell <ian.campbell@citrix.com>
To: Wei Liu <wei.liu2@citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
David Vrabel <david.vrabel@citrix.com>,
xen-devel <xen-devel@lists.xen.org>
Subject: Re: netfront/netback multiqueue exhausting grants
Date: Thu, 21 Jan 2016 10:37:51 +0000 [thread overview]
Message-ID: <1453372671.4320.4.camel@citrix.com> (raw)
In-Reply-To: <20160121102537.GO1691@citrix.com>
On Thu, 2016-01-21 at 10:25 +0000, Wei Liu wrote:
> On Thu, Jan 21, 2016 at 10:12:27AM +0000, Ian Campbell wrote:
> [...]
> > > I've asked the reporter to send logs for the 4.4 case to xen-devel.
> >
> > User confirmed[0] that 4.4 is actually OK.
> >
> > Did someone request stable backports yet, or shall I do so?
> >
>
> I vaguely remember we requested backport for relevant patches long time
> ago, but I admit I have lost track. So it wouldn't hurt if you do it
> again.
So I think we'd be looking for:
32a8440 xen-netfront: respect user provided max_queues
4c82ac3 xen-netback: respect user provided max_queues
ca88ea1 xen-netfront: update num_queues to real created
which certainly resolves things such that the workarounds work, and I think
will also fix the default case such that it works with up to 32 vcpus
(although it will consume all the grants and only get 31/32 queues).
Does that sound correct?
As Annie said, we may still want to consider what a sensible default max
queues would be.
Ian.
next prev parent reply other threads:[~2016-01-21 10:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-20 12:23 netfront/netback multiqueue exhausting grants Ian Campbell
2016-01-20 14:40 ` Boris Ostrovsky
2016-01-20 14:52 ` Ian Campbell
2016-01-20 15:02 ` David Vrabel
2016-01-20 15:10 ` Boris Ostrovsky
2016-01-20 15:16 ` Ian Campbell
2016-01-21 10:12 ` Ian Campbell
2016-01-21 10:25 ` Wei Liu
2016-01-21 10:37 ` Ian Campbell [this message]
2016-01-21 10:52 ` Wei Liu
2016-01-20 16:18 ` annie li
2016-01-21 10:56 ` David Vrabel
2016-01-21 12:19 ` Ian Campbell
2016-01-21 14:17 ` David Vrabel
2016-01-21 15:11 ` annie li
2016-01-22 3:36 ` Bob Liu
2016-01-22 7:53 ` Jan Beulich
2016-01-22 10:40 ` Bob Liu
2016-01-22 11:02 ` Jan Beulich
2016-01-23 0:29 ` Bob Liu
2016-01-25 9:53 ` Jan Beulich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1453372671.4320.4.camel@citrix.com \
--to=ian.campbell@citrix.com \
--cc=boris.ostrovsky@oracle.com \
--cc=david.vrabel@citrix.com \
--cc=wei.liu2@citrix.com \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).