Gentoo Archives: gentoo-performance

From: Gyujin Park <gpark@××××××.com>
To: gentoo-performance@l.g.o
Subject: Re: [gentoo-performance] swap?
Date: Sat, 31 Jul 2004 16:31:44
Message-Id: 20040731163140.783C638077@spy23.spymac.net
thanks,
weird though, swapiness does not exist in 2004.2 in this server. It does in my
desktop 2004.0.

but i found the big secret formula to clear up memory. Even though I am not sure.
(Thanks to Bart Alewijnse)

dd if=/dev/hda1 of=/dev/null bs=400M

It frees out a lot of memory.
However, swap still doesn't work.

Tom

On Sat Jul 31 10:25 , Colin Kingsley <ckingsley@×××××.com> sent:

>just a thought. A server environment might benefit from setting the >swappiness factor higher. try echo "100" > /proc/sys/vm/swappiness > >On Sat, 31 Jul 2004 07:27:36 -0600, Gyujin Park gpark@××××××.com> wrote: >> Yes, response in Apache, and vsFTP gets really slow until more memory frees out. >> (Report from users and other admins while I was testing the system.) >> >> Thanks, >> >> Tom >> >> On Fri Jul 30 20:42 , Colin Kingsley ckingsley@×××××.com> sent: >> >> >As far as I know, your system should be stable. The details of how >> >much memory/swap is used at any given moment probably depends on your >> >kernel, how much memory you have, etc. >> > >> >Do you have any actual evidence of the slow down you mentioned? the >> >system should begin using swap when/if it needs to. it looks to me >> >like you discovered the "free" command and are seeing problems where >> >none exist. >> > >> >On Sat, 31 Jul 2004 03:53:58 +0200, lukas lukas@××××××.de> wrote: >> >> On Saturday 31 July 2004 02:42, Gyujin Park wrote: >> >> > Does this mean the system will be still stable with 99% memory usage? >> >> > I mean, at some point it should turn into swap. The system reaches up >> >> > to 99% physical memory usage with less than 3 MB of physical memory >> >> > left. >> >> >> >> "free" gives me the following outout on my workstation: >> >> >> >> total used free shared buffers cached >> >> Mem: 1550840 1308096 242744 0 94244 859148 >> >> -/+ buffers/cache: 354704 1196136 >> >> Swap: 522104 23868 498236 >> >> >> >> About 84% memory is used. But about 900MB are used for caching and >> >> buffering, so in fact there are only about 346MB in "real use". >> >> If your memory is 99% without buffers and cache, then there is >> >> something wrong (but I don't know what). >> >> Can you see a process that consumes that much memory when you are >> >> calling "ps" or "top"? >> >> What kind of kernel do you use? >> >> >> >> cu >> >> >> >> lukas >> >> >> >> >> >> >> > >> >-- >> >gentoo-performance@g.o mailing list >> > >> >> ---- Introducing Spymac MailPro: http://www.spymac.com/mailpro/ >> >> -- >> gentoo-performance@g.o mailing list >> >> > >-- >gentoo-performance@g.o mailing list >
---- Introducing Spymac MailPro: http://www.spymac.com/mailpro/ -- gentoo-performance@g.o mailing list

Replies

Subject Author
Re: [gentoo-performance] swap? Colin Kingsley <ckingsley@×××××.com>