Date: Mon, 25 Oct 2004 22:09:05 -0400 From: "R. Payette" <premi@altern.org> To: freebsd-performance@freebsd.org Subject: Disk buffer / memory utilization Message-ID: <0327434A-26F4-11D9-A907-0030658DC702@altern.org>
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I'm trying to get the best performances from a ratter limited system. My question is 2 fold : 1- the 'buf' column in top, I thought freebsd ( and other modern OSes ) used free memory for disk buffer until it is required for something else. But I see on my system that the 'buf' is always 14 M no matter the load on the server, even in heavy swapping situations, it remains 14 M. 2- how to reduce the wired memory ? I have a lean custom built kernel and 17M ( around 22M after a few hour of utilization ) is a little to much to be normal. I mean, out of the 64M this machine has, 36M are locked out by the bare system which has, a network card, a hard disk and an unused video card ( headless machine ). Is there something I can tune in sysctl or my kernel conf ? or is it a concept I don't get correctly ? Thanks for any help, pointers
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