From: Willy Tarreau <w@1wt.eu>
To: Eric Dumazet <edumazet@google.com>
Cc: Feng Tang <feng.tang@intel.com>,
kernel test robot <rong.a.chen@intel.com>,
"David S. Miller" <davem@davemloft.net>,
Yue Cao <ycao009@ucr.edu>, LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
lkp@lists.01.org
Subject: Re: [LKP] [net] 19f92a030c: apachebench.requests_per_second -37.9% regression
Date: Wed, 13 Nov 2019 18:21:02 +0100 [thread overview]
Message-ID: <20191113172102.GA23306@1wt.eu> (raw)
In-Reply-To: <CANn89iJejNcvARpGR01seeuxV7JViMengX_nqdDV7cfyaisQpQ@mail.gmail.com>
On Wed, Nov 13, 2019 at 08:46:00AM -0800, Eric Dumazet wrote:
> We have been using 4096 at Google for about 5 years, and Google is still
> alive.
Same for most haproxy users, changing from the default 128 to several
thousands always fixes their initial performance problems. There really
must be something else in this test, or it depends on a strange corner
case that's triggered by the increase, but that sounds odd.
Regards,
Willy
prev parent reply other threads:[~2019-11-13 17:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 8:35 [net] 19f92a030c: apachebench.requests_per_second -37.9% regression kernel test robot
2019-11-08 8:35 ` kernel test robot
2019-11-13 10:35 ` [LKP] " Feng Tang
2019-11-13 10:35 ` Feng Tang
2019-11-13 14:33 ` [LKP] " Eric Dumazet
2019-11-13 14:33 ` Eric Dumazet
2019-11-13 16:12 ` [LKP] " Feng Tang
2019-11-13 16:12 ` Feng Tang
2019-11-13 16:46 ` Eric Dumazet
2019-11-13 17:21 ` Willy Tarreau [this message]
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