[OpenAFS] OpenAFS directory update is SLOW. Performance tuning?

[John Bleichert]

On Thu, 21 Mar 2002, Noel Burton-Krahn wrote:

> Date: Thu, 21 Mar 2002 13:42:56 -0800
> From: Noel Burton-Krahn <noel@burton-krahn.com>
> To: openafs-info@openafs.org
> Subject: [OpenAFS] OpenAFS directory update is SLOW.  Performance tuning?
> 
> Hi,
> 
> So, I've got AFS set up serving from my Linux box to my WinXP client.
> Great.  I moved my home directory to AFS.  Then I did a "cvs update" in one
> of my project directories now under AFS.  S-L-O-W!  AFS was about 12x sloser
> than a "cvs update" on a local disk.  Is there some way to improve that?
> 

Is the server slow? I cant give you numbers (cuz I'd be guessing) but I've 
gotten this slow service from running AFS on a server with bad disk and 
RAM I/O (not bad, just old - a temporary mirror during an upgrade or 5) - 
does it take the server a long time to spool from disk to memory? 

A fast client can bury and old server on a fast network..

Just a guess - JB



> It took 1.5 minutes to update on AFS, 7 seconds off local disk.  The
> directory I did my "cvs update" in has 13022 files and 1220 directories.  My
> AFS client was configured with Cache Size: 200000, Chunk Size: 32kb, Status
> Cache: 10000 entries.
> 
> That kind of slowdown is just too much.  This might be the end of AFS for
> us.  Is there any way to improve that?
> 
> --Noel
> 
> 
> 
> ----- Original Message -----
> From: "Hartmut Reuter" <hwr@rzg.mpg.de>
> To: "Dong Fangpeng" <fpdong@ict.ac.cn>
> Cc: <openafs-info@openafs.org>
> Sent: Monday, March 18, 2002 7:10 AM
> Subject: Re: [OpenAFS] Help!
> 
> 
> > On Mon, 18 Mar 2002, Dong Fangpeng wrote:
> >
> > > hello:
> > > It seems that installing AFS is a hard work for me, so I have to ask for
> help again! The situation is :
> > >
> > > I started BOS by " ./bosserver -noauth &" and then input
> > > "./bos setcellname dfp.linux.ict.ac.cn dfp.linux.ict.ac.cn -noauth" to
> name my cell,
> > > "./bos listhost dfp.linux.ict.ac.cn" returned following:
> > >
> > >
> > >    Cell name is dfp.linux.ict.ac.cn
> > >         Host 1 is dfp.linux.ict.ac.cn
> > >
> > >  "./bos status dfp.linux.ict.ac.cn " told me the kaserver, buserver and
> vlserver running normally
> > > but when I input "./bos create ...."commands,following error returned:
> > >
> > >  "bos:could not find entry (can't find cell 'dfp.linux.ict.ac.cn' in
> cell database)"
> > >
> > > The content of file CellSVDB in /usr/afs/etc/ is :
> > >
> > >     >dfp.linux.ict.ac.cn   #Cell name
> > >     192.168.1.27         #dfp.linxu.ict.ac.cn
> >
> > The klog command is a client command which uses /usr/vice/etc/CellServDB
> > to find the database servers of the cell. Probably this one doesn't
> > contain your new cell.
> >
> > Hartmut
> >
> >
> >
> > >
> > > Then what's the problem, and what should I do?
> > >
> > > Thanks for any answer!
> > >
> > > Fangpeng Dong
> > >
> > > ICT of CAS
> > > phone: 86-010-62565533-9313/9310
> > >
> >
> > -----------------------------------------------------------------
> > Hartmut Reuter                           e-mail reuter@rzg.mpg.de
> >    phone +49-89-3299-1328
> > RZG (Rechenzentrum Garching)               fax   +49-89-3299-1301
> > Computing Center of the Max-Planck-Gesellschaft (MPG) and the
> > Institut fuer Plasmaphysik (IPP)
> > -----------------------------------------------------------------
> >
> > _______________________________________________
> > OpenAFS-info mailing list
> > OpenAFS-info@openafs.org
> > https://lists.openafs.org/mailman/listinfo/openafs-info
> >
> >
> 
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|-John Bleichert----syborg@stny.rr.com----------------|
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