Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bbn!bbn.com!ellard
From: ellard@bbn.com (Dan Ellard)
Newsgroups: comp.unix.wizards
Subject: Time spent handling interrupts, context switches
Message-ID: <36715@bbn.COM>
Date: 3 Mar 89 12:30:14 GMT
Sender: news@bbn.COM
Reply-To: ellard@BBN.COM (Dan Ellard)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 10

Has anyone ever done any testing to measure the percentage
of time the UNIX kernel spends handling interrupts (i.e. in the interrupt
context), or in context switching for moderately loaded systems? 

I'm mostly interested in data about BSD-flavored UNIX or MACH, but
info about any other flavor of UNIX or other operating systems like
VAX/VMS, OS/360, MULTICS, etc. would be useful too.

Thanks,
	Dan