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From: Sridhar Samudrala <sri@us.ibm.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
	mst@redhat.com, netdev@vger.kernel.org
Subject: Re: [RFC PATCH] Regression in linux 2.6.32 virtio_net seen with vhost-net
Date: Wed, 16 Dec 2009 21:02:50 -0800	[thread overview]
Message-ID: <4B29BB7A.8000307@us.ibm.com> (raw)
In-Reply-To: <20091217031233.GA26027@gondor.apana.org.au>

Herbert Xu wrote:
> On Wed, Dec 16, 2009 at 05:43:00PM -0800, Sridhar Samudrala wrote:
>   
>> I had to change virtnet_xmit_poll() to get it working. See below.
>> With this change, i don't see any 'queue full' warnings, but requeues
>> are still happening at the qdisc level (sch_direct_xmit() finds that
>> tx queue is stopped and does requeues).
>>     
>
> More importantly how does the performance look?
>   
TCP stream throughput is around the same 3200Mb/sec

Thanks
Sridhar


  reply	other threads:[~2009-12-17  5:03 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-08 22:50 [RFC PATCH] Regression in linux 2.6.32 virtio_net seen with vhost-net Sridhar Samudrala
2009-12-13 12:25 ` Herbert Xu
2009-12-13 23:40   ` Michael S. Tsirkin
2009-12-15 14:42     ` Herbert Xu
2009-12-15 16:26       ` Sridhar Samudrala
2009-12-16  1:21         ` Herbert Xu
2009-12-15 23:32       ` Michael S. Tsirkin
2009-12-16  1:58         ` Herbert Xu
2009-12-16  4:37         ` Rusty Russell
2009-12-16 10:37           ` Michael S. Tsirkin
2009-12-16  2:41   ` Rusty Russell
2009-12-16  2:53     ` Herbert Xu
2009-12-16 12:45       ` Rusty Russell
2009-12-16 13:22         ` Michael S. Tsirkin
2009-12-16 13:35           ` Herbert Xu
2009-12-16 13:38             ` Michael S. Tsirkin
2009-12-16 13:48               ` Herbert Xu
2009-12-17  2:02           ` Rusty Russell
2009-12-17  9:25             ` Michael S. Tsirkin
2009-12-18  1:55               ` Rusty Russell
2009-12-16 13:30         ` Herbert Xu
2009-12-17  1:43         ` Sridhar Samudrala
2009-12-17  3:12           ` Herbert Xu
2009-12-17  5:02             ` Sridhar Samudrala [this message]
2009-12-17  3:15           ` Herbert Xu
2009-12-17  5:05             ` Sridhar Samudrala
2009-12-17  6:28               ` Herbert Xu
2009-12-17  6:45                 ` Sridhar Samudrala
2009-12-17 10:03                   ` Krishna Kumar2
2009-12-17 11:27                     ` Jarek Poplawski
2009-12-17 11:45                       ` Herbert Xu
2009-12-17 11:49                         ` Herbert Xu
2009-12-17 12:08                           ` Herbert Xu
2009-12-17 12:27                             ` Krishna Kumar2
2009-12-17 12:42                               ` Jarek Poplawski
2009-12-17 12:56                                 ` Herbert Xu
2009-12-17 13:22                                   ` Krishna Kumar2
2009-12-17 13:04                                 ` Krishna Kumar2
2009-12-17 13:44                               ` Herbert Xu
2009-12-17 14:35                                 ` Krishna Kumar2
2009-12-17 14:36                                   ` Herbert Xu
2009-12-17 21:50                                     ` Sridhar Samudrala
2009-12-17 22:28                                       ` Sridhar Samudrala
2009-12-17 22:41                                         ` Jarek Poplawski
2009-12-18 13:46                                       ` Krishna Kumar2
2009-12-18 19:13                                       ` Sridhar Samudrala
2009-12-17 11:59                         ` Krishna Kumar2
2009-12-17 12:19                         ` Jarek Poplawski
2009-12-17 11:56                       ` Krishna Kumar2
2009-12-17 13:17                         ` Jarek Poplawski
2009-12-17 14:10                           ` Krishna Kumar2
2009-12-17 14:16                             ` Herbert Xu
2009-12-16 17:42     ` Sridhar Samudrala
  -- strict thread matches above, loose matches on Subject: below --
2009-12-17 11:20 Krishna Kumar
2009-12-17 19:28 ` Jarek Poplawski
     [not found] <20091217111219.9809.27432.sendpatchset@krkumar2.in.ibm.com>
     [not found] ` <20091217123153.GA31131@gondor.apana.org.au>
2009-12-17 12:56   ` Krishna Kumar2
2009-12-17 13:40     ` Herbert Xu
2009-12-17 13:56       ` Krishna Kumar2

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