Date: Tue, 27 Dec 2005 09:54:22 +0200 From: Mihai Tanasescu <mihai@duras.ro> To: Mike Jakubik <mikej@rogers.com> Cc: freebsd-performance@freebsd.org Subject: Re: Device polling heavy traffic Message-ID: <43B0F32E.7070905@duras.ro> In-Reply-To: <43B095C7.4090000@rogers.com> References: <43B05F1E.3060908@duras.ro> <43B095C7.4090000@rogers.com>
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Hello, Sorry for omitting the esential details about my system. You can find my dmesg at: http://pastebin.com/479977 I'm running: FreeBSD 6.0-RELEASE-p1 Here is my kernel configuration: http://pastebin.com/479981 I wasn't there when the panic happened, I just noticed the load average was increasing (with polling disabled); and it kept increasing until the machine become unresponsive. After 1-2 minutes I observed it had rebooted itself. Now I have polling enabled on it, I have kernel.idle.poll set and a latency of 1-5 ms inside the local network. But on the 3 links I have spoken of, altough they are not full I have between 1-5 ms and 20-30 ms (when the number of packets passive through the machine increases). Mike Jakubik wrote: > Mihai Tanasescu wrote: > >> The problem: >> If I ping this machine or anything that is routed through it I get >> response times of 10-15-30 ms and once in 30 seconds a packet is lost. >> >> If I disable kernel.polling.enable then I get response times of 1-2-3 >> ms but I also get a lot of interrupts and a kernel panic after about >> 20 min. > > > You should not be getting a panic, unless you have bad hardware. Can > you provide more details of the panic? Also, provide the version of > freebsd, any custom kernel configuration, and attach output of dmesg. >
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