> On Tue, 17 Jul 2001, Jani Jaakkola wrote:
>
> > On Tue, 17 Jul 2001, Steve Lord wrote:
> >
> > >
> > > Could you possibly try the cvs tree, Linus was still working deadlocks
> > > out of the memory allocation/reclaim end of things up until 2.4.7-pre2.
> > > XFS and ext2 will almost certainly push things in different directions.
> >
> > OK I'll try it..
> >
> > Right, it has now been running longer than ever before without a lockup.
> > However, the performance is very bad. But it just might be caused by the
> > simultaneous RAID resync I am doing at the same time. I'll get back to
> > this after the resync is done (or the machine has crashed).
>
> OK, no more lockups, but the horrible performance was not caused by RAID
> resync. It seems that the current cvs kernel has bad problems with sw
> RAID and xfs combined (and maybe SMP too). When untarring archive with
> lots of small files or using 'rm -r' I get 5 files created/removed per
> second, which is the performance of my last 286 with MSDOS :(
>
> The performance problem goes away if I don't use sw RAID. It also seems
> to be journal related, since there is no problems with just
> reading/writing big files. Bonnie tells me my block output is 37940K/sec
> and input is 133400K/sec with 4GB data.
>
> I must now leave this thing for a few days, but I guess I will try to find
> out what is wrong (however, I'm not a competent kernel hacker).
>
> - Jani
Can you email your raid configuration please, I don't have as many disks,
but I can try things out with a similar if smaller config.
Steve
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