Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!rutgers!sri-spam!ames!ucbcad!ucbvax!Thx-1138
From: Thx-1138@KL.SRI.COM:WILLIAMS@EDWARDS-2060.ARPA (Williams@Edwards-2060)
Newsgroups: comp.os.vms
Subject: RE: File cache hit rates (2nd try)
Message-ID: <12320672574.13.WILLIAMS@EDWARDS-2060.ARPA>
Date: Thu, 23-Jul-87 11:15:49 EDT
Article-I.D.: EDWARDS-.12320672574.13.WILLIAMS
Posted: Thu Jul 23 11:15:49 1987
Date-Received: Sat, 25-Jul-87 07:39:46 EDT
References: <870722202753.003@M5.Sdsc.Edu>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: Williams@Edwards-2060.ARPA
Distribution: world
Organization: The ARPA Internet
Lines: 37



Just a little tidbit for the XQP cache hackers among us:

	When you increase the cache sizes, Autogen is wizzy enough  to
increase the LOCKIDTBL and RESHASHTBL (if they need it).  However,  it
doesn't seem  to increase  SRPCOUNT based  on the  size of  those  two
tables, which is  what will get  eaten by the  greater number of  lock
blocks that  will be  consumed (since  the XQP  is "remembering"  file
activity for longer periods).  The RSBs will eat both the SRPLIST  and
the IRPLIST, it seems.

	So, if  you had  your nonpaged  pool closely  trimmed,  you'll
probably have to  go through  another iteration  to size  it (or  take
lookaside list expansion taps).


Now a question:

	In  a  sort   of  related   area,  I've   noticed  that   SHOW
PROCESS/CHANNELS in ANALYZE/SYSTEM  on my  8650 doesn't  give out  the
filenames--just the file ids.  This is apparently due to the fact that
all of our disks are hanging off an HSC-50 (a different node?),  since
our 11/785s with MASSBUS disks report the filenames just dandily.

	Is there  something I  can  do to  repair  this sad  state  of
affairs?  Failing that, does anybody have any FID-to-Filename  ditties
they'd be willing  to distribute?   (SDA uses a  Bliss routine  called
LIB$FID_TO_NAME out of some DEC-developer-only library, which  doesn't
seem to live on "normal" VMS systems.)

	Otherwise, I guess it's hi-ho, hi-ho, off to the ACP I go!

					Cheers,
					    Marc
					    (Williams@Edwards-2060.ARPA)
-------