Gentoo Logo
Gentoo Spaceship




Note: Due to technical difficulties, the Archives are currently not up to date. GMANE provides an alternative service for most mailing lists.
c.f. bug 424647
List Archive: gentoo-performance
Navigation:
Lists: gentoo-performance: < Prev By Thread Next > < Prev By Date Next >
Headers:
To: gentoo-performance@g.o
From: Gyujin Park <gpark@...>
Subject: Re: swap?
Date: Sat, 31 Jul 2004 10:31:35 -0600
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@...> 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@...> 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@...> 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@...> 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:
Re: swap?
-- Colin Kingsley
Navigation:
Lists: gentoo-performance: < Prev By Thread Next > < Prev By Date Next >
Previous by thread:
Re: swap?
Next by thread:
Re: swap?
Previous by date:
Re: swap?
Next by date:
Re: swap?


Updated Jun 17, 2009

Summary: Archive of the gentoo-performance mailing list.

Donate to support our development efforts.

Copyright 2001-2013 Gentoo Foundation, Inc. Questions, Comments? Contact us.