From: Jakob Oestergaard <jakob@unthought.net>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Greg Banks <gnb@sgi.com>, linux-kernel@vger.kernel.org
Subject: Re: bdflush/rpciod high CPU utilization, profile does not make sense
Date: Mon, 11 Apr 2005 16:41:27 +0200 [thread overview]
Message-ID: <20050411144127.GE13369@unthought.net> (raw)
In-Reply-To: <1113230125.9962.7.camel@lade.trondhjem.org>
On Mon, Apr 11, 2005 at 10:35:25AM -0400, Trond Myklebust wrote:
> må den 11.04.2005 Klokka 15:47 (+0200) skreiv Jakob Oestergaard:
>
> > Certainly;
> >
> > http://unthought.net/binary.dmp.bz2
> >
> > I got an 'invalid snaplen' with the 90000 you suggested, the above dump
> > is done with 9000 - if you need another snaplen please just let me know.
>
> So, the RPC itself looks good, but it also looks as if after a while you
> are running into some heavy retransmission problems with TCP too (at the
> TCP level now, instead of at the RPC level). When you get into that
> mode, it looks as if every 2nd or 3rd TCP segment being sent from the
> client is being lost...
Odd...
I'm really sorry for using your time if this ends up being just a
networking problem.
> That can mean either that the server is dropping fragments, or that the
> client is dropping the replies. Can you generate a similar tcpdump on
> the server?
Certainly; http://unthought.net/sparrow.dmp.bz2
--
/ jakob
next prev parent reply other threads:[~2005-04-11 14:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-06 16:01 bdflush/rpciod high CPU utilization, profile does not make sense Jakob Oestergaard
2005-04-06 21:28 ` Trond Myklebust
2005-04-07 15:28 ` Jakob Oestergaard
2005-04-06 23:19 ` Greg Banks
2005-04-07 15:38 ` Jakob Oestergaard
2005-04-07 16:01 ` Greg Banks
2005-04-07 16:17 ` Trond Myklebust
2005-04-09 21:35 ` Jakob Oestergaard
2005-04-09 21:52 ` Trond Myklebust
2005-04-11 7:48 ` Jakob Oestergaard
2005-04-11 12:35 ` Trond Myklebust
2005-04-11 13:47 ` Jakob Oestergaard
2005-04-11 14:35 ` Trond Myklebust
2005-04-11 14:41 ` Jakob Oestergaard [this message]
2005-04-11 15:21 ` Trond Myklebust
2005-04-11 15:42 ` Jakob Oestergaard
2005-04-12 1:03 ` Greg Banks
2005-04-12 9:28 ` Jakob Oestergaard
2005-04-19 19:45 ` Jakob Oestergaard
2005-04-19 22:46 ` Trond Myklebust
2005-04-20 13:57 ` Jakob Oestergaard
2005-04-24 7:15 ` Jakob Oestergaard
2005-04-25 3:09 ` Trond Myklebust
2005-04-25 13:50 ` Jakob Oestergaard
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