From owner-freebsd-questions Thu May 30 07:46:37 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id HAA08319 for questions-outgoing; Thu, 30 May 1996 07:46:37 -0700 (PDT) Received: from eros.britain.eu.net (eros.Britain.EU.net [192.91.199.2]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id HAA08301 for ; Thu, 30 May 1996 07:46:30 -0700 (PDT) Received: from nadt.org.uk by eros.britain.eu.net with UUCP id ; Thu, 30 May 1996 15:45:55 +0100 Received: from [194.155.224.204] (infomac.nadt.org.uk [194.155.224.204]) by charlie.nadt.org.uk (8.6.12/8.6.12) with SMTP id PAA06321; Thu, 30 May 1996 15:32:08 +0100 Posted-Date: Thu, 30 May 1996 15:32:08 +0100 X-Sender: robmel@mailhost Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Thu, 30 May 1996 15:31:26 +0100 To: questions@freebsd.org From: robmel@nadt.org.uk (Robin Melville) Subject: Re: Excessive interrupts question Cc: croot@btp1da.phy.uni-bayreuth.de, mikes@nickel.ucs.indiana.edu Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> I have 2.1 running on a Hewlett Packard NetServer with a NE2000 clone ether >> card and HP-doctored Adaptech 7770 on-board scsi with one 2Gb disk. >> >> It runs ok but very sluggishly. Checking with xperfmon++ I discover that >> something's generating 20k+ interrupts per second. Can anyone suggest what >> I should do to solve this? > >Try "vmstat -i" to identify the interrupt source > >Werner >I'd immediately suspect the NE2000. This is a well-known CPU hog in >Novell servers. > >[ Michael ] vmstat -i shows: interrupt total rate clk0 irq0 95305809 99 rtc0 irq8 104534 0 fdc0 irq6 1 0 ahc1 irq11 9696467 10 sc0 irq1 5 0 sio0 irq4 2 0 sio1 irq3 2 0 ed1 irq5 7469608 7 Total 112576428 118 This is a different picture from that supplied by xperfmon (?). Are these interrupts excessive? Thanx again .... Robin. ----------------------------------------------- Robin Melville, Addiction Information Service Nottingham Alcohol & Drug Team Vox +44 (0)115 952 9478 Fax +44 (0)115 952 9421 Email: robmel@nadt.org.uk WWW: http://www.innotts.co.uk/suba/ -----------------------------------------------