Date: Sat, 18 Feb 2006 21:11:11 +0100 (CET) From: Wolfgang Zenker <wolfgang@saturn.lyxys.ka.sub.org> To: freebsd-stable@freebsd.org Subject: Re: high interrupt load under 6.0? Message-ID: <200602182011.k1IKBB7a079573@saturn.lyxys.ka.sub.org> In-Reply-To: <1140292322.11473.10.camel@honker.internal.dcrosstech.com>
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Hi, > I have a 486DX50 firewall that has been serving me well for a number of > years. I recently upgraded it fro 5.4 to 6.0 and performance plumeted > rather drastically (about 40%). I would like to fix it. What I have > noticed is that even when sitting idle the system spends ~20% of its > time in interrupt. Below I have included dmesg, kernel config, and > vmstat -i information. > [..] > interrupt total rate > irq0: clk 203894894 1000 a clock rate of 1000 Hz is probably to high for a 486 class cpu. You should add "options HZ=100" to your kernel config to get back to the 100 Hz that where default before 6.0 Wolfgang
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