Date: Thu, 22 Jun 2006 14:08:20 +0200 From: Marcin Koziej <creep@desk.pl> To: freebsd-stable@freebsd.org Subject: Poor swapping performance -- lot's of unused free memory. Message-ID: <449A8834.10902@desk.pl>
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Hello, I use FreeBSD 6.1-STABLE #0: Mon Jun 12 18:00:56 CEST 2006 for a desktop (Launch several apps at the start and mostly nothing else, except when compiling). I've got 512 MB of ram. From some time, I've noticed poor swapping performance -- this can be very annoying when memory needs to be swapped in and the whole systems chokes on disk I/O. Most frequently when launching a big application or clicking on recently not used application window. What I notice, is that top(1) reports: 60 MB free, and 150 MB on the swap, which means these 60 mb are just sitting there doing nothing. I remember in older versions of FreeBSD tried to keep swap as little used as possible, leaving 3-4 mb ram free. This is just a feeling, of course, but it feels like it's slower now. Can anybody comment on this? Maybe there is a sysctl which can tune this ? (I've searched for such, but found nothing). Best regards, Marcin Koziej
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