From: "S. Michael Denton" <scott@dixie.dyndns.org>
To: linux-lvm@sistina.com
Subject: Re: Re: [linux-lvm] LVM & high system load
Date: Tue, 1 May 2001 12:05:48 -0400 [thread overview]
Message-ID: <200105011605.f41G5kE31140@dixie.dyndns.org> (raw)
Dominique.Larchey-Wendling@loria.fr wrote:
> Dominique LARCHEY-WENDLING wrote:
>
>
> > relatively poor IO perf. (my cpu is only PII 333) on LVM volumes. I
have
> > tested reiserfs and ext2fs and I only get about 2.5Mb/s with 100% CPU
> > load,
> > mostly system time.
>
> More over, doing a CPU intensive task (like kernel comp.) (not involving
> LVM, the
> sources are not on a LV) cut the IO perf. of LVM fs by half.
>
> So it seems that the LVM is eating a lot of CPU on my system and this is
> what is limiting fs perf.
I doubt it, I've got LVM0.9.1b7 on a 486 without any real load... even when
compiling the kernel. I also have reiserfs on 2.2.19. I noticed in your
previous post that you had 3 pv's on the same physical disk... that may be
contributing, depending on your PE layout on the PVs. If not, it's
definitely silly :)
> DL
>
> --
> Dominique Larchey
> LORIA, Nancy, France
> Tel. (Work) +33 (0) 3 83 59 20 13
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
>
>
--------------------------------------------------------------------------
Scott Denton
smdenton@bellsouth.net
EFNet Handle: SteelWyng
next reply other threads:[~2001-05-01 16:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-01 16:05 S. Michael Denton [this message]
2001-05-01 21:28 ` [linux-lvm] LVM & high system load Dominique LARCHEY-WENDLING
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