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From: Kenny Simpson <theonetruekenny@yahoo.com>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: linux-kernel@vger.kernel.org
Subject: re: mmap over nfs leads to excessive system load
Date: Tue, 8 Nov 2005 12:18:47 -0800 (PST)	[thread overview]
Message-ID: <20051108201847.89115.qmail@web34112.mail.mud.yahoo.com> (raw)
In-Reply-To: <1131480107.32482.48.camel@lade.trondhjem.org>

I knew I forgoet something important in the info:
  type nfs (rw,tcp,rsize=32768,wsize=32768,hard,intr,vers=3,tcp,rsize=32768,wsize=32768,hard,intr

-Kenny


--- Trond Myklebust <trond.myklebust@fys.uio.no> wrote:

> On Tue, 2005-11-08 at 11:25 -0800, Kenny Simpson wrote:
> > Just another data point....
> > If I open the file with O_DIRECT.. not much changes:
> 
> Hmm... Are you mounting using the -osync or -onoac options? Doing
> synchronous writes will tend to slow down flushing considerably, and the
> VM appears to be very fragile w.r.t. slow filesystems.
> 
> Cheers,
>   Trond



		
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  reply	other threads:[~2005-11-08 20:18 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-08 19:25 mmap over nfs leads to excessive system load Kenny Simpson
2005-11-08 20:01 ` Trond Myklebust
2005-11-08 20:18   ` Kenny Simpson [this message]
2005-11-08 20:57   ` Kenny Simpson
     [not found] <20051115224645.27832.qmail@web34103.mail.mud.yahoo.com>
2005-11-15 23:47 ` Kenny Simpson
2005-11-16  4:31   ` William Lee Irwin III
2005-11-16  6:05     ` Kenny Simpson
2005-11-16  7:45   ` Andrew Morton
2005-11-16 14:03     ` Trond Myklebust
2005-11-16 15:01       ` Kenny Simpson
2005-11-16 17:44         ` Trond Myklebust
2005-11-16 18:00           ` Andrew Morton
2005-11-16 18:34             ` Trond Myklebust
2005-11-16 18:38               ` Christoph Hellwig
2005-11-17 13:08                 ` Nikita Danilov
2005-11-16 19:09               ` Andrew Morton
2005-11-16 20:05                 ` Trond Myklebust
2005-11-16 20:56                   ` Kenny Simpson
2005-11-16 21:02                     ` Kenny Simpson
2005-11-16 21:09                     ` Trond Myklebust
2005-11-16 21:17                       ` Kenny Simpson
2005-11-16 21:41                       ` Kenny Simpson
2005-11-16 21:57                         ` Trond Myklebust
2005-11-16 22:04                           ` Kenny Simpson
2005-11-16 22:39                           ` Kenny Simpson
2005-11-16 23:06                             ` Trond Myklebust
2005-11-17 15:40                               ` Chuck Lever
2005-11-17 16:56                                 ` Kenny Simpson
2005-11-17 16:01                               ` Kenny Simpson
2005-11-17 21:04                                 ` Andrew Morton
2005-11-17 21:15                                   ` Kenny Simpson
2005-11-18 16:55                                   ` Kenny Simpson
2005-11-18 17:26                                   ` Kenny Simpson
2005-11-18 21:57                                   ` Kenny Simpson
2005-11-17 17:02                               ` Chuck Lever
2005-11-17 17:07                                 ` Trond Myklebust
2005-11-18 19:59                               ` Kenny Simpson
2005-11-16 21:31                   ` Andrew Morton
2005-11-16 21:49                     ` Trond Myklebust
2005-11-16 22:10                       ` Andrew Morton
2005-11-16 22:23                         ` Trond Myklebust
2005-11-16 22:38                           ` Trond Myklebust
2005-11-16 22:50                             ` Andrew Morton
2005-11-16 22:44                           ` Andrew Morton
2005-11-16 23:10                             ` Trond Myklebust
2005-11-17  0:06                             ` Trond Myklebust
2005-11-17  0:25                               ` Andrew Morton
2005-11-17  0:28                                 ` Trond Myklebust
2005-11-17  0:38                                   ` Andrew Morton
2005-11-17  0:47                                     ` Trond Myklebust
2005-11-16 18:48           ` Kenny Simpson
2005-11-16 19:06           ` Kenny Simpson
  -- strict thread matches above, loose matches on Subject: below --
2005-11-08 18:47 Kenny Simpson

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