From: Chris Mason <mason@suse.com>
To: Dirk Mueller <dmuell@gmx.net>
Cc: reiserfs-list@namesys.com
Subject: Re: Large Partition Performance Test
Date: 11 Apr 2002 18:11:23 -0400 [thread overview]
Message-ID: <1018563083.14483.100.camel@tiny> (raw)
In-Reply-To: <20020411202856.GA26083@matrix.wg>
On Thu, 2002-04-11 at 16:28, Dirk Mueller wrote:
> On Don, 11 Apr 2002, Oleg Drokin wrote:
>
> > 4 minutes 20 seconds to write 1.6G of data even in the beginning?!
> > This sounds too slow to me. Though RAID5 certainly can slow things down.
>
> Its not the RAID,I can reproduce it:
>
> day/hour 00 00 seconds = 691
> day/hour 00 01 seconds = 720
>
> this seems to be highly CPU bound, because it hardly ever accessed the
> harddisk. it spends 60% in kernel space cpu though.
Then I would expect the new allocator in busy_skip mode to fix it. But,
having profiling on would tell us for sure.
-chris
next prev parent reply other threads:[~2002-04-11 22:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-11 18:14 Large Partition Performance Test Bill Rees
2002-04-11 19:26 ` Hans Reiser
2002-04-11 19:43 ` Oleg Drokin
2002-04-11 20:28 ` Dirk Mueller
2002-04-11 22:11 ` Chris Mason [this message]
2002-04-12 9:41 ` Oleg Drokin
2002-04-12 13:21 ` Chris Mason
2002-04-12 13:32 ` Oleg Drokin
2002-04-11 19:48 ` Bill Rees
2002-04-12 9:39 ` Oleg Drokin
2002-04-12 13:21 ` Bill Rees
2002-04-12 13:29 ` Oleg Drokin
-- strict thread matches above, loose matches on Subject: below --
2002-04-11 19:28 Ivan Ivanov
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