[OpenAFS] Stat cache slowness on RH 7.1?

[Derek Atkins]

Well, I've got the same code running on a desktop and a laptop.
The laptop has a faster processor, faster bus, and more memory,
but it is still much slower than the desktop.  The only difference
I can really point my finger at would be:
	a) the network (pcmcia vs. PCI), and
	b) Disk I/O

Using pathchar, it looks like I'm getting 6.7Mb out of the laptop and
9.8Mb out of the desktop.  However, both machines are sitting behind
the same 1.5Mb link, so I can't imagine it being the network.

-derek

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

> I have seen this behavior on my desktop as well.
> 
> I'm running current cvs of openafs on a desktop 100Mbit connection, so it
> should definately not be the network.
> 
> -- Nathan
> 
> > -----Original Message-----
> > From: Derek Atkins [mailto:warlord@MIT.EDU]
> > Sent: Thursday, August 16, 2001 12:57 PM
> > To: openafs-info@openafs.org
> > Subject: [OpenAFS] Stat cache slowness on RH 7.1?
> > 
> > 
> > Hi,
> > 
> > I've got a laptop running RH 7.1 and it appears that the AFS stat
> > cache is being REALLY slow.  It seems to take a very long time to,
> > say, autocomplete, or perform any other function that requires stat()
> > on an uncached file.  But this only happens the 'first' time -- once
> > the information is in the stat cache, lookups are really fast.
> > 
> > This certainly happens with 1.0.4.  I don't know if it happens with
> > 1.1.1.  Mostly, I was just wondering if anyone else has noticed this
> > problem?
> > 
> > The laptop in question is a ThinkPad A22m.  It doesn't matter whether
> > I use a Lucent 802.11 card or a 3com 10Base-T card.
> > 
> > Any suggestions would be welcome.
> > 
> > -derek
> > 
> > PS: Yes, this is reproducible; all I need to do is reboot the
> > machine and the slowness returns until the stat cache is filled
> > again.
> > -- 
> >        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
> > _______________________________________________
> > OpenAFS-info mailing list
> > OpenAFS-info@openafs.org
> > https://lists.openafs.org/mailman/listinfo/openafs-info
> > 
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info

-- 
       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