From: Andi Kleen <andi@firstfloor•org>
To: Eric Dumazet <eric.dumazet@gmail•com>
Cc: Patrick McHardy <kaber@trash•net>,
Herbert Xu <herbert@gondor•apana.org.au>,
"H.K. Jerry Chu" <hkchu@google•com>,
Michael Dalton <mwdalton@google•com>,
netdev <netdev@vger•kernel.org>
Subject: Re: [RFC] csum experts, csum_replace2() is too expensive
Date: Thu, 20 Mar 2014 18:56:59 -0700 [thread overview]
Message-ID: <87a9cknwk4.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <1395341341.9114.93.camel@edumazet-glaptop2.roam.corp.google.com> (Eric Dumazet's message of "Thu, 20 Mar 2014 11:49:01 -0700")
Eric Dumazet <eric.dumazet@gmail•com> writes:
>
> I saw csum_partial() consuming 1% of cpu cycles in a GRO workload, that
> is insane...
Couldn't it just be the cache miss?
-Andi
--
ak@linux•intel.com -- Speaking for myself only
next prev parent reply other threads:[~2014-03-21 1:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-20 18:49 [RFC] csum experts, csum_replace2() is too expensive Eric Dumazet
2014-03-21 0:13 ` Herbert Xu
2014-03-21 0:54 ` Eric Dumazet
2014-03-21 12:50 ` Herbert Xu
2014-03-21 1:56 ` Andi Kleen [this message]
2014-03-21 2:51 ` Eric Dumazet
2014-03-21 12:50 ` Eric Dumazet
2014-03-21 13:28 ` Andi Kleen
2014-03-21 13:32 ` Eric Dumazet
2014-03-21 13:47 ` Eric Dumazet
2014-03-21 13:56 ` Eric Dumazet
2014-03-21 14:14 ` David Laight
2014-03-21 18:52 ` David Miller
2014-03-24 2:50 ` Eric Dumazet
2014-03-24 10:30 ` David Laight
2014-03-24 13:17 ` Eric Dumazet
2014-03-24 14:13 ` Eric Dumazet
2014-03-21 18:07 ` David Miller
2014-03-21 18:30 ` Eric Dumazet
2014-03-24 2:51 ` [PATCH net-next] net: optimize csum_replace2() Eric Dumazet
2014-03-24 4:20 ` David Miller
2014-03-24 10:22 ` David Laight
2014-03-24 13:25 ` Eric Dumazet
2014-03-24 14:38 ` David Laight
2014-03-24 15:14 ` Eric Dumazet
2014-03-24 15:52 ` David Laight
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