Date: Sun, 10 May 1998 21:32:48 -0500 (EST) From: "John S. Dyson" <dyson@FreeBSD.ORG> To: grog@lemis.com (Greg Lehey) Cc: hackers@FreeBSD.ORG Subject: Re: Strange VM behaviour Message-ID: <199805110232.VAA10628@dyson.iquest.net> In-Reply-To: <19980511101327.F7546@freebie.lemis.com> from Greg Lehey at "May 11, 98 10:13:27 am"
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Greg Lehey said: > I'm currently monitoring performance on a system running > 2.2.5-RELEASE, and have found a strange behaviour in the following > vmstat output. This particular machine has 128 MB of memory, which > seems to be more than ample. On the fifth line of the output, > however, the number of pages scanned, normally 0 and never > 10, hits > 3005. This is accompanied by an increase of 5700 pages of free > memory. What could have caused this? > It is probably detecting that the number of cache or inactive pages is too low. Note that cache pages are usually measured as part of the free page pool, and will fault back to active when needed. -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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