Date: Sun, 10 Dec 2006 08:23:00 -0800 (PST) From: Holtor <holtor@yahoo.com> To: stable@freebsd.org Subject: kern.ipc.nsfbufs Max Value? Message-ID: <718463.76303.qm@web31704.mail.mud.yahoo.com>
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I have an extremely busy web server here serving mostly static html pages and images using apache 2.2.3 with sendfile enabled. It's a Dual Xeon server with 4 GB RAM and I've tweaked many sysctl variables to help the system chug along. At peak, apache is running nearly 1,500 child processes. To my question, what is the max value of kern.ipc.nsfbufs and does it depend on any other values? I had originally increased it to 32768 however sfbufs got maxed out slowing the server. Then I increased it to 65536 and currently have these results: 45348/48844/65536 sfbufs in use (current/peak/max) To me that's too close for comfort so I further tried to increase it to 131072 however with that setting the system would not boot. The kernel page faulted with an error in the swapper process until I decreased kern.ipc.nsfbufs back to 65536. Is there anyway to increase this value even higher? The server has nearly 2.5 GB of free ram out of the 4 GB installed and the load averages are very low 0.07, 0.15, 0.34 so hopefully it's possible to tweak this some more. Any ideas? Thank You, Holt G. ____________________________________________________________________________________ Need a quick answer? Get one in minutes from people who know. Ask your question on www.Answers.yahoo.com
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