Messages in this thread |  | | | Date | Sun, 10 Nov 2002 11:17:30 +0100 | | From | Jens Axboe <> | | Subject | Re: [BENCHMARK] 2.4.{18,19{-ck9},20rc1{-aa1}} with contest |
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On Sun, Nov 10 2002, Kjartan Maraas wrote: > lør, 2002-11-09 kl. 14:54 skrev Jens Axboe: > > [SNIP] > > > The default is 2048. How long does the io_load test take, or rather how > > The default on my RH system with the latest errata kernel is as follows: > > [root@sevilla kmaraas]# elvtune /dev/hda > > /dev/hda elevator ID 0 > read_latency: 8192 > write_latency: 16384 > max_bomb_segments: 6 > > [root@sevilla kmaraas]# uname -a > Linux sevilla.gnome.no 2.4.18-17.7.x #1 Tue Oct 8 13:33:14 EDT 2002 i686 > unknown > [root@sevilla kmaraas]# > > Is this worth changing to lower values then? They seem to be an awful > lot higher than the values mentioned below here.
As I mentioned in the email sent out a few minutes ago, you cannot compare the values from 2.4.19 and earlier to 2.4.20-pre/rc at all. The algorithm for determining when a request is starved has been changed to be more correct, and that has invalidated these values.
-- Jens Axboe
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