Date: Sat, 9 Jun 2012 22:44:12 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Ian Lepore <freebsd@damnhippie.dyndns.org> Cc: freebsd-hackers@freebsd.org Subject: Re: wired memory - again! Message-ID: <alpine.BSF.2.00.1206092239490.9248@wojtek.tensor.gdynia.pl> In-Reply-To: <1339259223.36051.328.camel@revolution.hippie.lan> References: <alpine.BSF.2.00.1206090920030.84632@wojtek.tensor.gdynia.pl> <1339259223.36051.328.camel@revolution.hippie.lan>
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> The kernel auto-tunes the vfs buffer space using the formula "for the > first 64 MB of ram use 1/4 for buffers, plus 1/10 of the ram over 64 i always limit it by kern.maxbcache=20000000 on 1GB RAM machine with lots of I/O but actually with default MAXBSIZE and little I/O you can use safely 1MB It DOES NOT limit how much files are cached. But still - in spite of that i have a lot of wired memory. still it is bad nobody answered how to pin down "wired" memory use. instead of experimenting i would like rather to understand what is what.
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