Messages in this thread | | | From | Grant Coady <> | Subject | Re: Why is 2.4.32 four times faster than 2.6.14.6?? | Date | Sun, 08 Jan 2006 18:42:25 +1100 |
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On Sun, 08 Jan 2006 08:18:40 +0100, be-news06@lina.inka.de (Bernd Eckenfels) wrote:
>Markus Rechberger <mrechberger@gmail.com> wrote: >> Hi, >> >> what does hdparm show up? >> Were there any other processes running during the test? >> what does "vmstat 1" show up during the test? > >also also retry with redirection to /dev/null, this could be a console >problem since there is 5 minutes wait time.
Excuse me? there is no 5 minutes wait time ;)
grant@deltree:~$ uname -r 2.4.32-hf32.1 grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96
real 0m1.671s user 0m0.550s sys 0m0.300s grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null
real 0m0.510s user 0m0.420s sys 0m0.080s
grant@deltree:~$ uname -r 2.6.14.6a grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null real 0m6.463s user 0m0.770s sys 0m0.990s grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null
real 0m0.524s user 0m0.400s sys 0m0.130s
Yes, the delay is in the console, that's what I'm talking about ;) A very perceivable, measurable sluggishness in 2.6 CLI over ssh.
Same thing on 2.6.14.6 screen console is (copy by hand): real 0m1.374s user 0m0.510s sys 0m0.960s
-- Thanks, Grant. http://bugsplatter.mine.nu/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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