From: Shirley Ma <mashirle@us.ibm.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>, Shirley Ma <xma@us.ibm.com>,
David Stevens <dlstevens@us.ibm.com>,
kvm@vger.kernel.org, sri@linux.vnet.ibm.com,
mashirle@linux.vnet.ibm.com
Subject: Re: vhost-net patches
Date: Tue, 27 Oct 2009 09:36:18 -0700 [thread overview]
Message-ID: <1256661378.6745.2.camel@localhost.localdomain> (raw)
In-Reply-To: <20091027152753.GA4622@redhat.com>
Hello Michael,
On Tue, 2009-10-27 at 17:27 +0200, Michael S. Tsirkin wrote:
> Possibly GFP_ATOMIC allocations in vring_add_indirect are failing?
> Is there a chance you are tight on guest memory for some reason?
> with vhost, virtio does currently consume a bit more memory than
> with userspace backend.
I did see memory leak on host every time after exiting guest. I don't
know where. Do you see it?
Anyway after I reboot host and restart guest with large memory
allocation, I do see performance improves to 3xxxMb/s, and occasionally
reaches 40xxMb/s. But "queue full" still exists, I can avoid the problem
by increasing send queue size from qemu.
I will apply deferring skb allocation patch on guest to see any
performance gain after your vhost patch.
Thanks
Shirley
next prev parent reply other threads:[~2009-10-27 16:36 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1255721369.10322.38.camel@w-sridhar.beaverton.ibm.com>
[not found] ` <20091018105356.GA8374@redhat.com>
[not found] ` <20091018173202.GA32441@redhat.com>
2009-10-19 22:56 ` vhost-net patches Sridhar Samudrala
2009-10-20 10:24 ` Michael S. Tsirkin
[not found] ` <OFE487449E.75D4E72D-ON87257654.007E61BF-88257654.007F1CCC@us.ibm.com>
2009-10-20 11:34 ` Michael S. Tsirkin
[not found] ` <OF491C5580.D14A9827-ON87257655.005E2B42-88257655.005EBFDD@us.ibm.com>
2009-10-20 17:18 ` Michael S. Tsirkin
[not found] ` <OF519C21FE.3A50884E-ON87257655.005FB73B-88257655.005FEA00@us.ibm.com>
2009-10-20 17:33 ` Michael S. Tsirkin
[not found] ` <OFAA36418A.2A0716E0-ON87257656.006D1231-88257656.006DD91D@us.ibm.com>
2009-10-21 20:19 ` Michael S. Tsirkin
[not found] ` <OF2487602C.0F4CA77B-ON87257656.00834AC0-88257656.0083C68B@us.ibm.com>
2009-10-22 9:24 ` Michael S. Tsirkin
2009-10-22 10:56 ` Michael S. Tsirkin
2009-10-22 12:34 ` Michael S. Tsirkin
2009-10-22 13:13 ` Michael S. Tsirkin
2009-10-22 17:23 ` Shirley Ma
2009-10-22 17:32 ` Shirley Ma
2009-10-22 17:36 ` Michael S. Tsirkin
2009-10-22 17:44 ` Shirley Ma
2009-10-22 17:47 ` Michael S. Tsirkin
2009-10-22 17:56 ` Shirley Ma
2009-10-22 18:13 ` Shirley Ma
2009-10-22 17:43 ` Michael S. Tsirkin
2009-10-22 18:00 ` Sridhar Samudrala
2009-10-23 7:12 ` Michael S. Tsirkin
2009-10-23 11:04 ` Michael S. Tsirkin
2009-10-23 15:02 ` Shirley Ma
2009-10-23 15:12 ` Shirley Ma
2009-10-23 16:23 ` Shirley Ma
2009-10-25 10:52 ` Michael S. Tsirkin
2009-10-25 17:05 ` Michael S. Tsirkin
2009-10-26 9:27 ` Michael S. Tsirkin
2009-10-26 21:35 ` Shirley Ma
2009-10-26 20:05 ` Michael S. Tsirkin
2009-10-26 21:34 ` Shirley Ma
2009-10-27 6:43 ` Michael S. Tsirkin
2009-10-27 14:46 ` Shirley Ma
2009-10-27 15:27 ` Michael S. Tsirkin
2009-10-27 16:36 ` Shirley Ma [this message]
2009-10-27 20:58 ` Michael S. Tsirkin
2009-10-28 15:55 ` Shirley Ma
2009-10-28 15:39 ` Michael S. Tsirkin
2009-10-28 16:45 ` Shirley Ma
2009-10-28 16:53 ` Michael S. Tsirkin
2009-10-28 18:12 ` Shirley Ma
2009-10-29 7:11 ` Shirley Ma
2009-11-02 19:46 ` Michael S. Tsirkin
2009-11-03 1:06 ` Xin, Xiaohui
2009-11-03 15:52 ` Shirley Ma
2009-10-28 20:55 ` Shirley Ma
2009-10-28 16:46 ` kvm memory leak (Was Re: vhost-net patches) Michael S. Tsirkin
2009-10-29 12:21 ` Avi Kivity
2009-10-29 12:50 ` Avi Kivity
2009-10-23 19:24 ` vhost-net patches Shirley Ma
2009-10-25 9:11 ` Michael S. Tsirkin
2009-10-26 21:37 ` Shirley Ma
2009-10-27 6:38 ` Michael S. Tsirkin
2009-10-27 14:48 ` Shirley Ma
2009-10-28 17:46 ` Arnd Bergmann
2009-10-28 18:13 ` Shirley Ma
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