[Linux-cluster] Ls and globbing taking ridiculously long on GFS

[bigendian at gmail.com]

I know this is an old thread, but I'm curious how to run oprofile myself.
Any tips?

Thanks,
Tom


On 11/7/06, Dylan Vanderhoof <DylanV at semaphore.com> wrote:
>
> Certainly.
>
> dylanv at iscsi0 /var/www/netresponse/lib/NetResponse/Controller $ gfs_tool
> version
> gfs_tool 1.03.00 (built Oct 17 2006 15:10:45)
> Copyright (C) Red Hat, Inc.  2004-2005  All rights reserved.
>
> dylanv at iscsi0 /var/www/netresponse/lib/NetResponse/Controller $ uname -a
> Linux iscsi0 2.6.17-gentoo-r8 #8 SMP Fri Sep 15 13:57:05 PDT 2006 i686
> Intel(R) Xeon(TM) CPU 3.00GHz GNU/Linux
>
> As long as its not too disruptive, I can definitely run oprofile.
> Instructions would be handy however.  =)
>
> -Dylan
>
> > -----Original Message-----
> > From: Wendy Cheng [mailto:wcheng at redhat.com]
> > Sent: Tuesday, November 07, 2006 11:00 AM
> > To: linux clustering
> > Subject: Re: [Linux-cluster] Ls and globbing taking
> > ridiculously long on GFS
> >
> >
> > Dylan Vanderhoof wrote:
> > > I understand that a df, or ls -l that requires statting
> > files should be
> > > slow.  However, I'm seeing ridiculous performance of just an ls, or
> > > anything doing file globbing in directory reads.
> > >
> > My guess is that you have lots of small writes before the "ls" that
> > generates the disk flushing. Could you pass your kernel and
> > gfs versions
> > ? Mind running oprofile on your node (I can pass the
> > instructions if you
> > like) so I can take a look ?
> >
> > -- Wendy
> >
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
> >
>
> --
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