Date: Sat, 28 May 2005 13:17:24 +1000 From: Michael VInce <mv@roq.com> To: freebsd-performance@freebsd.org Subject: High usage of mbufs Message-ID: <4297E2C4.1030505@roq.com>
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Hi guys On one of my web servers I have a really high usage of mbuf clusters in use on a web server that does about 3million hits a day. 4294914731/262144 mbuf clusters in use (current/max) Does any one know why this is? I was thought it may of been hit by a small syn flood that went un noticed and that the current mbuf stat is failing to update its real usage, but the number does move every time I run netstat -m This is a dual P4 machine with 4gigs of ram that was setup before 5.4 was release, so it could be considered 5.3 stable. 5.4-PRERELEASE #0: Mon Feb 28 20:01:43 EST 2005 netstat -m 352955 mbufs in use 4294914731/262144 mbuf clusters in use (current/max) 0/27/6656 sfbufs in use (current/peak/max) 4177412 KBytes allocated to network 0 requests for sfbufs denied 0 requests for sfbufs delayed 415 requests for I/O initiated by sendfile 2300 calls to protocol drain routines
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