Date: Fri, 31 May 1996 21:04:28 BST From: Michael Searle <searle@longacre.demon.co.uk> To: questions@freefall.freebsd.org Subject: Re: Excessive interrupts question Message-ID: <mD714F9A5@longacre.demon.co.uk> References: <199605311756.KAA26673@freefall.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
robmel@nadt.org.uk (Robin Melville) wrote: > OK, I installed the new xperfmon++ ... it works fine. However, it is > still showing very high interrupt levels which don't tally with the > vmstat -i report. > xperfmon++ run as an X-client on the problem machine still shows > interrupts as hovering around 20 000 per second while vmstat shows > around 120/sec. > Is your program measuring something different from vmstat? > Best regards, > Robin. In an earlier post, vmstat -i output showed an unusually low number of clock interrupts. (but otherwise normal.) Maybe if the system clock used by xperfmon++ is slow, a normal interrupt rate is shown as being very high. (20 000 per 100 seconds or however long it takes for 100 ticks of the slow clock) -- Michael Searle - searle@longacre.demon.co.uk
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?mD714F9A5>