Messages in this thread | | | Date | Sun, 8 Jan 2006 10:21:01 -0800 | From | Octavio Alvarez Piza <> | Subject | Re: Why is 2.4.32 four times faster than 2.6.14.6?? |
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On Sun, 08 Jan 2006 22:05:43 +1100 Grant Coady <gcoady@gmail.com> wrote:
> On Sun, 8 Jan 2006 10:57:41 +0100, Willy Tarreau <willy@w.ods.org> wrote: > > > Could you please retest : > > - without the pipe (remove '| cut ...') to avoid inter-process > > communications > > I thought it made a difference, then delay back again, I'll try > again tomorrow when I'm more awake. > > >You should be able to find one simple pattern which makes the problem > >appear/disappear on 2.6. At least, 'cat x.log >/dev/null' should not > >take time or that time should be spent in I/O. > > Yes, done that and the time went down by ~five seconds.
Just make sure you first read all the file with cat (I'd retry all from the initial tests) so you don't add hd-read time to the first command.
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