Date: Wed, 29 Sep 2004 17:51:53 EDT From: TM4525@aol.com To: freebsd-questions@freebsd.org Subject: Freebsd 5.2.1 Performance Woes Message-ID: <fa.2e69790.2e8c8879@aol.com>
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While I was had a nice little test set up, I figured I'd test Freebsd 4.9 against 5.2.1 since I had fresh installs handy on separate drives. The simple test was as follows: Hardware: Celeron 2.4Ghz processor Dual onboard Intel (em) NICs, 32bit, 33Mhz bus Setup: Traffic Generator -> FreeBSD System -> Server I had it set up to route between the 2 interfaces (ie NOT bridged). I fired a unidirectional stream of UDP packets (so there was no return traffic from the server, which was discarding the packets) at a rate of ~100Kpps. The disturbing results: FreeBSD 4.9: 33% interrupt usage FreeBSD 5.2.1: >80% interrupt usage What has happened to the stack?
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