* Andrei Popov <[EMAIL PROTECTED]> [011226 12:21] wrote: > On Wed, Dec 26, 2001 at 09:19:05AM -0600, Dan Nelson wrote: > > In the last episode (Dec 26), Andrei Popov said: > > > > > > Is this normal: > > > > > > andrei@vogon:~ > > > 2:05:49pm% swapinfo > > > Device 1K-blocks Used Avail Capacity Type > > > /dev/ad4s1b 525344 0 525344 0% Interleaved > > > > > > This machine is running with 256MB RAM and a 512MB swap device. Swap usage > > > is zero even when running X and postgress and aolserver with a running > > > instance of OpenACS-4. > > > > Try this: > > > > dd if=/dev/zero of=/dev/null bs=192m count=1 > > > > That should force some swapping :) > > It sure does :) > > But the question still remains -- is it not odd that there's no swapping > when running X, nor is there one when running fairly expenmsive Postgres > selects et al?
No, the system tries pretty hard not to swap. In fact swapping is really a bad thing to have happen on a loaded machine as it can result in a cascade failure. If you look in the archives for Matt Dillon's postings on "cascade failure" it will explain things a lot better. -- -Alfred Perlstein [[EMAIL PROTECTED]] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductable donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
