From: Evgeniy Polyakov <zbr@ioremap.net>
To: "Ilpo Järvinen" <ilpo.jarvinen@helsinki.fi>
Cc: David Miller <davem@davemloft.net>,
Netdev <netdev@vger.kernel.org>,
efault@gmx.de, mingo@elte.hu, a.p.zijlstra@chello.nl,
Herbert Xu <herbert@gondor.apana.org.au>
Subject: Re: tbench wrt. loopback TSO
Date: Mon, 27 Oct 2008 17:13:32 +0300 [thread overview]
Message-ID: <20081027141332.GA4691@ioremap.net> (raw)
In-Reply-To: <Pine.LNX.4.64.0810270942430.1290@wrl-59.cs.helsinki.fi>
On Mon, Oct 27, 2008 at 09:49:21AM +0200, Ilpo Järvinen (ilpo.jarvinen@helsinki.fi) wrote:
> > > That's what I got with the current tree for 8 threads on a 4-way 32-bit
> > > Xeons (2 physical CPUs) and 8gb of ram:
> > > gso/tso off: 361.367
> > > tso/gso on: 354.635
> >
> > Yes, it might do this, in which case tcp_tso_should_defer() simply needs
> > some tweaking.
>
> Good point, could you Evgeniy verify first if simple goto send_now; in
> beginning there recovers it all...
With direct goto at the begining of the tcp_tso_should_defer()
and 4403b406 commit git tree (was current yesterday night)
I got following numbers:
with goto:
tso/gso on: 358.976, 357.699
tso/gso off: 368.016, 367.079
no goto
tso/gso on: 353.656, 354.791
tso/gso off: 364.8, 365.85
So tcp_tso_should_defer() adds additional problems not counted in
tso/gso changes.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2008-10-27 14:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-16 0:14 tbench wrt. loopback TSO David Miller
2008-10-17 3:49 ` non-TCP tbench (was Re: tbench wrt. loopback TSO) David Miller
2008-10-26 12:34 ` tbench wrt. loopback TSO Evgeniy Polyakov
2008-10-27 1:59 ` David Miller
2008-10-27 7:49 ` Ilpo Järvinen
2008-10-27 14:13 ` Evgeniy Polyakov [this message]
2008-10-27 15:19 ` Ilpo Järvinen
2008-10-27 17:03 ` Evgeniy Polyakov
2008-10-27 18:39 ` David Miller
2008-10-27 19:35 ` Evgeniy Polyakov
2008-10-27 19:37 ` David Miller
2008-11-05 11:42 ` David Miller
2008-11-05 11:49 ` Evgeniy Polyakov
2008-11-05 11:54 ` David Miller
2008-11-05 12:04 ` Ilpo Järvinen
2008-11-05 12:09 ` David Miller
2008-11-05 12:25 ` Ilpo Järvinen
2008-11-05 13:04 ` Evgeniy Polyakov
2008-11-05 13:33 ` Ilpo Järvinen
2008-11-05 18:48 ` Rick Jones
2008-11-05 19:46 ` Ilpo Järvinen
2008-11-05 21:06 ` Rick Jones
2008-10-27 22:17 ` Ilpo Järvinen
2008-10-31 8:14 ` David Miller
2008-10-31 9:16 ` Ilpo Järvinen
2008-10-31 9:47 ` David Miller
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