From: annie li <annie.li@oracle.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"konrad.wilk@oracle.com" <konrad.wilk@oracle.com>
Subject: Re: [PATCH 0/4] Implement persistent grant in xen-netfront/netback
Date: Sat, 17 Nov 2012 12:39:21 +0800 [thread overview]
Message-ID: <50A714F9.4040206@oracle.com> (raw)
In-Reply-To: <1353066382.3499.227.camel@zakaz.uk.xensource.com>
On 2012-11-16 19:46, Ian Campbell wrote:
>
> It seems like having netfront simply allocate itself a pool of grant
> references which it reuses would give equivalent benefits whilst being a
> smaller patch, with no protocol change and avoiding double copying. In
> fact by avoiding the double copy I'd expect it to be even better.
>
>
OK, I can try this implementation.
And I'd better to compare the performance between double copy and this
implementation to see how much grant lock affects grant copy too.
> I think you need to measure both dom0->domU and domU->dom0 to get the
> full picture since AIUI netperf sends the bulk data in only one
> direction with just ACKs coming back the other way.
>
Yes.
My environment does not meet requirement of more VMs, I would do more
thorough test after Konrad setups the environment.
Thanks
Annie
next prev parent reply other threads:[~2012-11-17 4:39 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-15 7:03 [PATCH 0/4] Implement persistent grant in xen-netfront/netback Annie Li
2012-11-15 7:04 ` [PATCH 1/4] xen/netback: implements persistent grant with one page pool Annie Li
2012-11-15 9:10 ` Ian Campbell
2012-11-16 2:18 ` [Xen-devel] " ANNIE LI
2012-11-16 9:27 ` Ian Campbell
2012-11-16 9:55 ` ANNIE LI
2012-11-15 9:57 ` Roger Pau Monné
2012-11-16 2:49 ` ANNIE LI
2012-11-16 7:57 ` ANNIE LI
2012-11-16 9:32 ` Ian Campbell
2012-11-16 11:34 ` ANNIE LI
2012-11-15 7:04 ` [PATCH 2/4] xen/netback: Split one page pool into two(tx/rx) " Annie Li
2012-11-15 9:15 ` Ian Campbell
2012-11-16 3:10 ` ANNIE LI
2012-11-15 7:05 ` [PATCH 3/4] Xen/netfront: Implement persistent grant in netfront Annie Li
2012-11-15 10:52 ` [Xen-devel] " Roger Pau Monné
2012-11-16 5:22 ` ANNIE LI
2012-11-16 7:58 ` ANNIE LI
2012-11-15 7:05 ` [PATCH 4/4] fix code indent issue in xen-netfront Annie Li
2012-11-15 7:40 ` [PATCH 0/4] Implement persistent grant in xen-netfront/netback Pasi Kärkkäinen
2012-11-15 8:38 ` [Xen-devel] " ANNIE LI
2012-11-15 8:51 ` Ian Campbell
2012-11-15 9:02 ` ANNIE LI
2012-11-15 9:35 ` Wei Liu
2012-11-15 11:12 ` [Xen-devel] " ANNIE LI
2012-11-16 15:34 ` Konrad Rzeszutek Wilk
2012-11-15 10:56 ` Roger Pau Monné
2012-11-15 11:14 ` ANNIE LI
2012-11-15 11:15 ` Ian Campbell
2012-11-15 18:29 ` Konrad Rzeszutek Wilk
2012-11-15 19:11 ` Ian Campbell
2012-11-16 15:23 ` Konrad Rzeszutek Wilk
2012-11-16 15:21 ` Konrad Rzeszutek Wilk
2012-11-15 8:53 ` Ian Campbell
2012-11-15 11:14 ` ANNIE LI
2012-11-15 8:56 ` Ian Campbell
2012-11-15 11:14 ` [Xen-devel] " ANNIE LI
2012-11-16 9:57 ` Ian Campbell
2012-11-16 11:37 ` ANNIE LI
2012-11-16 11:46 ` Ian Campbell
2012-11-17 4:39 ` annie li [this message]
2012-11-16 15:18 ` Konrad Rzeszutek Wilk
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