Swap not used *at**all*
Is this normal: andrei@vogon:~ 2:05:49pm% swapinfo Device 1K-blocks UsedAvail Capacity Type /dev/ad4s1b5253440 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. systat(1) with vmstat option shows no activity on swap either. The system is a recent -CURRENT (21-Dec). -- Andrei P.S. From -questions, please cc: me in reply To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: Swap not used *at**all*
In the last episode (Dec 26), Andrei Popov said: Is this normal: andrei@vogon:~ 2:05:49pm% swapinfo Device 1K-blocks UsedAvail Capacity Type /dev/ad4s1b5253440 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 :) -- Dan Nelson [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: Swap not used *at**all*
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 UsedAvail Capacity Type /dev/ad4s1b5253440 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? -- Dan Nelson [EMAIL PROTECTED] -- Andrei To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: Swap not used *at**all*
In the last episode (Dec 26), Andrei Popov said: 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: Device 1K-blocks UsedAvail Capacity Type /dev/ad4s1b5253440 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? Not necessarily. It depends on your configuration. If you tell Postgres to use (say) 192MB of memory, then it will definitely swap, just like the dd did. If you only configure it for 64MB, then it could easily coexist with X, Netscape, and other medium-memory-use applications without swapping. I wouldn't expect AOLServer to consume much memory at all. As comparison, I have a 512MB box that runs mysql (256MB), squid (75MB), and roxen (20MB), and occasionally X+mozilla (64MB). It has 30MB of swap used at the moment, which was probably just used once. -- Dan Nelson [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-current in the body of the message
Re: Swap not used *at**all*
* 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 UsedAvail Capacity Type /dev/ad4s1b5253440 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
