From: "Michael S. Tsirkin" <mst@redhat.com>
To: Krishna Kumar <krkumar2@in.ibm.com>
Cc: rusty@rustcorp.com.au, davem@davemloft.net, kvm@vger.kernel.org,
arnd@arndb.de, netdev@vger.kernel.org, avi@redhat.com,
anthony@codemonkey.ws
Subject: Re: [v2 RFC PATCH 0/4] Implement multiqueue virtio-net
Date: Wed, 6 Oct 2010 15:34:31 +0200 [thread overview]
Message-ID: <cover.1286372004.git.mst@redhat.com> (raw)
On Fri, Sep 17, 2010 at 03:33:07PM +0530, Krishna Kumar wrote:
> For 1 TCP netperf, I ran 7 iterations and summed it. Explanation
> for degradation for 1 stream case:
I thought about possible RX/TX contention reasons, and I realized that
we get/put the mm counter all the time. So I write the following: I
haven't seen any performance gain from this in a single queue case, but
maybe this will help multiqueue?
Thanks,
Michael S. Tsirkin (2):
vhost: put mm after thread stop
vhost-net: batch use/unuse mm
drivers/vhost/net.c | 7 -------
drivers/vhost/vhost.c | 16 ++++++++++------
2 files changed, 10 insertions(+), 13 deletions(-)
--
1.7.3-rc1
next reply other threads:[~2010-10-06 13:34 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-06 13:34 Michael S. Tsirkin [this message]
2010-10-06 13:34 ` [PATCH 1/2] vhost: put mm after thread stop Michael S. Tsirkin
2010-10-06 13:34 ` [PATCH 2/2] vhost-net: batch use/unuse mm Michael S. Tsirkin
2010-10-06 17:02 ` [v2 RFC PATCH 0/4] Implement multiqueue virtio-net Krishna Kumar2
2010-10-11 7:21 ` Krishna Kumar2
2010-10-12 17:09 ` Michael S. Tsirkin
2010-10-14 7:58 ` Krishna Kumar2
2010-10-14 8:17 ` Michael S. Tsirkin
2010-10-14 9:04 ` Krishna Kumar2
[not found] ` <OFEC86A094.39835EBF-ON652577BC.002F9AAF-652577BC.003186B5@LocalDomain>
2010-10-14 12:17 ` Krishna Kumar2
[not found] ` <OF0BDA6B3A.F673A449-ON652577BC.00422911-652577BC.0043474B@LocalDomain>
2010-10-14 12:47 ` Krishna Kumar2
-- strict thread matches above, loose matches on Subject: below --
2010-09-17 10:03 Krishna Kumar
2010-09-17 15:42 ` Sridhar Samudrala
2010-09-19 12:44 ` Michael S. Tsirkin
2010-10-05 10:40 ` Krishna Kumar2
2010-10-05 18:23 ` Michael S. Tsirkin
2010-10-06 17:43 ` Krishna Kumar2
2010-10-06 19:03 ` Michael S. Tsirkin
2010-10-06 12:19 ` Arnd Bergmann
2010-10-06 17:14 ` Krishna Kumar2
2010-10-06 17:50 ` Arnd Bergmann
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