Gentoo Archives: gentoo-performance

From: Colin Kingsley <ckingsley@×××××.com>
To: gentoo-performance@l.g.o, gpark@××××××.com
Subject: Re: [gentoo-performance] swap?
Date: Sat, 31 Jul 2004 16:25:28
Message-Id: 13cc2f7804073109259dc2eab@mail.gmail.com
In Reply to: Re: [gentoo-performance] swap? by Gyujin Park
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 > >
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