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

[Dylan Vanderhoof]

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
> 
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