From: Willy Tarreau <willy@w.ods.org>
To: Martin Josefsson <gandalf@wlug.westbo.se>
Cc: Willy Tarreau <willy@w.ods.org>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.22-pre10
Date: Sat, 2 Aug 2003 20:10:07 +0200 [thread overview]
Message-ID: <20030802181007.GB13525@alpha.home.local> (raw)
In-Reply-To: <1059817370.1868.5.camel@tux.rsn.bth.se>
Hi Martin,
On Sat, Aug 02, 2003 at 11:42:50AM +0200, Martin Josefsson wrote:
> Have you tried using the ULOG target and the ulogd userspace daemon?
> It uses netlink and can batch several entries together before it sends
> them to userspace. Works a lot better than syslog.
yes, I tried it about february. I thought it to be the ideal solution, and it
performed better than the standard syslog, but not as well as syslog-ng. I
could catch about 1500 lines/s at most, and the daemon was very hungry, it ate
between 55 and 70% of the CPU, while syslog-ng eats about 25-30. So I thought
it was still a bit experimental and switched to syslog-ng.
> Are you using ip_conntrack on that machine? if you are, be aware that
> ip_conntrack doesn't scale well at all on SMP. It's beeing worked on.
Yes I do. I noticed the scalability problems a long time ago on my dual athlon
at home, but wasn't really concerned. At my customer's, the only SMP one is
used as a development gateway. All the others are UP (PIII/1G, P4/2.4G).
BTW, I get the same numbers with 2.4.22-pre10 / standard ip_conntrack as with
2.4.21-rc2 with tcp_window_tracking. I would have thought that
tcp_window_tracking costs a bit more, but it doesn't seem to be noticeable here.
Cheers,
Willy
next prev parent reply other threads:[~2003-08-02 18:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-01 16:19 Linux 2.4.22-pre10 Marcelo Tosatti
2003-08-01 22:47 ` Willy Tarreau
2003-08-02 9:42 ` Martin Josefsson
2003-08-02 18:10 ` Willy Tarreau [this message]
2003-08-02 18:28 ` Martin Josefsson
2003-08-02 19:14 ` Willy Tarreau
2003-08-05 12:46 ` Marcelo Tosatti
2003-08-02 13:06 ` Stephan von Krawczynski
2003-08-03 11:01 ` [2.4 patch] fix a compile warning in acpi/system.c Adrian Bunk
2003-08-03 13:16 ` [patch] 2.4.22-pre10: fix circular dependency Adrian Bunk
2003-08-05 20:19 ` Marc-Christian Petersen
2003-08-02 7:26 Linux 2.4.22-pre10 Margit Schubert-While
2003-08-02 12:13 Fridtjof Busse
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