From: "David S. Miller" <davem@davemloft.net>
To: Andi Kleen <ak@suse.de>
Cc: ak@suse.de, netdev@oss.sgi.com, jheffner@psc.edu,
herbert@gondor.apana.org.au
Subject: Re: Current 2.6.x TSO state
Date: Fri, 1 Oct 2004 17:04:56 -0700 [thread overview]
Message-ID: <20041001170456.3ec52222.davem@davemloft.net> (raw)
In-Reply-To: <20041001231939.GC23046@wotan.suse.de>
On Sat, 2 Oct 2004 01:19:39 +0200
Andi Kleen <ak@suse.de> wrote:
> > As mentioned, the TCP receive buffer auto-tuning takes care
> > of all of this in 2.6.6 and later. It's just 2.6.5 doesn't
>
> How do you explain the 2-4MB/s less with manually increased
> receive buffers?
Some scheduling differences, I suppose.
Frankly, I've done what I can with the TSO stuff at this point.
All I get from you are "it's slower" and no code, I've had to
write and fix and debug everything for you. The performance
is close or on-par to non-TSO and more importantly TSO abides
by the congestion window and MSS values properly now. That's
10 times more important than 2-4MB/s performance difference.
Or maybe I should revert all of the TSO work so that all SpecWEB
submissions done with 2.6.x kernels get invalidated?
next prev parent reply other threads:[~2004-10-02 0:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-01 4:32 Current 2.6.x TSO state David S. Miller
2004-10-01 10:11 ` Andi Kleen
2004-10-01 19:47 ` David S. Miller
2004-10-01 19:51 ` Andi Kleen
2004-10-01 19:56 ` David S. Miller
2004-10-01 20:01 ` Andi Kleen
2004-10-01 20:15 ` David S. Miller
2004-10-01 20:33 ` John Heffner
2004-10-01 23:19 ` Andi Kleen
2004-10-02 0:04 ` David S. Miller [this message]
2004-10-01 13:06 ` Herbert Xu
2004-10-03 21:50 ` David S. Miller
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