Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!cs.utexas.edu!uunet!mcvax!dik
From: dik@cwi.nl (Dik T. Winter)
Newsgroups: comp.unix.wizards
Subject: Re: How much paging is "a lot?"
Message-ID: <8223@boring.cwi.nl>
Date: 27 Jun 89 22:19:22 GMT
References: <3818@phri.UUCP> <7145@cbmvax.UUCP>
Organization: CWI, Amsterdam
Lines: 19


 In article <3818@phri.UUCP> roy@phri.UUCP (Roy Smith) writes:
 > 
 > 	I've been keeping an eye on our 4-Mbyte vax-11/750, trying to
 > figure out if it would really help things if we added more memory...
 >                                          ..Is 64 (1k) pages/second "a lot"?
 >
 > Over the past few minutes, it's been at or near 0 for perhaps half the
 > time, with a few peaks up in the 30-50 range.  Is that "a lot"?
 
Well, this weekend I had a 12 hour session with a CDC Cyber 995 that gave
a total of 11,000,000+ page faults, or about 260/sec.  And the machine
was not very loaded. ;-)  Oh, and page size is selected at deadstart and
is 2K, 4K, 8K or 16K words (8 byte words) in size.  Must have been some
disk traffic.
-- 
dik t. winter, cwi, amsterdam, nederland
INTERNET   : dik@cwi.nl
BITNET/EARN: dik@mcvax