[OpenAFS-devel] Increase -stat parameter of afsd(VLRU cycle?)

[Derek Atkins]

Keep in mind that the number of -stat will affect how much
(non-swappable) RAM is pinned down in kernel space for AFS inodes.
The larger the number, the more RAM the afs kernel will suck up.  This
used to be important back in the days of 16M machines, because AFS
could easily pin down 2+MB of RAM, a significant percentage.
Nowadays, with 64+MB machines, increasing the amount of RAM isn't
quite as important, so pinning down 4-6MB for inodes isn't as
significant a hit.

-derek

"Neulinger, Nathan R." <nneul@umr.edu> writes:

> Date: Fri, 2 Feb 2001 10:38:50 -0600 
> MIME-Version: 1.0
> X-Mailer: Internet Mail Service (5.5.2650.21)
> Content-Type: text/plain;
> 	charset="ISO-8859-1"
> 
> Woops. I had originally put that in the subject, then changed the subject.
> i386_linux22 on 2.2.18+lots of patches. 
> 
> Is it worthwhile in general to use a larger -stat value even if I'm not
> seeing this particular error? Any recommendations on the size?
> 
> -- Nathan
> 
> > -----Original Message-----
> > From: Chas Williams [mailto:chas@cmf.nrl.navy.mil]
> > Sent: Friday, February 02, 2001 10:34 AM
> > To: Nathan Neulinger
> > Cc: openafs-devel@openafs.org
> > Subject: Re: [OpenAFS-devel] Increase -stat parameter of afsd(VLRU
> > cycle?) 
> > 
> > 
> > >I am occasionally getting the error about "Increase -stat 
> > parameter of 
> > >afsd(VLRU cycle?)" always immediately followed by a OOPS of 
> > some process 
> > >running at the time.
> > 
> > i believe afs uses a static number of 'inodes'.  when it runs out, it 
> > goes back through the list looking for unused.  however if all are in
> > use (i suppose a bulk stat of a directory w/ a large nubmer of files)
> > you will crash and burn.  increase the -stat parameter.  2800 
> > may seems
> > large, but it can be used quickly.
> > 
> > btw, what platform?
> > 
> _______________________________________________
> OpenAFS-devel mailing list
> OpenAFS-devel@openafs.org
> https://lists.openafs.org/mailman/listinfo.cgi/openafs-devel

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@MIT.EDU                        PGP key available