From: "Xie, Huawei" <huawei.xie@intel.com>
To: Changchun Ouyang <changchun.ouyang@hotmail.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "ann.zhuangyanying@huawei.com" <ann.zhuangyanying@huawei.com>
Subject: Re: [dpdk-dev] [RFC PATCH] vhost: remove lockless enqueue to virt ring
Date: Fri, 6 Nov 2015 05:50:31 +0000 [thread overview]
Message-ID: <C37D651A908B024F974696C65296B57B4B16F084@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <SNT147-W49453CF685121B3CF3A80899280@phx.gbl>
On 11/6/2015 9:48 AM, Changchun Ouyang wrote:
>
>
> > From: huawei.xie@intel.com
> > To: huawei.xie@intel.com; dev@dpdk.org
> > Date: Thu, 5 Nov 2015 10:21:41 +0000
> > CC: haifeng.lin@intel.com; ann.zhuangyanying@huawei.com
> > Subject: Re: [dpdk-dev] [RFC PATCH] vhost: remove lockless enqueue
> to virt ring
> >
> > If no objections, would remove the internal cmpset enqueue, should get
> > some improved performance.
>
> I think it is good.
> The vhost sample also need some changes for this modification.
> do we have the percentage of gaining when removing the lock?
The atomic cmpset is a costly operation.
We plan to implement vhost/virtio performance test example, which will
cover the most common scenarios.
/huawei
>
> thanks and regards,
> Changchun
>
prev parent reply other threads:[~2015-11-06 5:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1446658952-101192-1-git-send-email-huawei.xie@intel.com>
2015-11-05 10:21 ` Xie, Huawei
2015-11-06 1:42 ` Tetsuya Mukawa
2015-11-06 5:33 ` Xie, Huawei
2015-11-06 1:47 ` Changchun Ouyang
2015-11-06 5:50 ` Xie, Huawei [this message]
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