Memory use

[[iso-8859-1] José Angel Blanco González]

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In vmstat, si is always 0, so it is not using swap I suppose. The computer 
is a mail server with 500 mail accounts, maybe ipopd  or imapd the bug??

----- Original Message ----- 
From: "Rob" <rob at THEHOSTMASTERS.COM>
To: <MAILSCANNER at JISCMAIL.AC.UK>
Sent: Wednesday, November 16, 2005 2:43 PM
Subject: Re: Memory use


> What Kernel are you running? as 2.4.20 has a bug in it, buffers for cache 
> are NOT released... change kernel versions if you do....
>
>
>
> Rob Morin
> Dido Internet Inc.
> Montreal, Canada
> 514-990-4444
> http://www.dido.ca
>
> ----- Original Message ----- 
> From: "Glenn Steen" <glenn.steen at GMAIL.COM>
> To: <MAILSCANNER at JISCMAIL.AC.UK>
> Sent: Wednesday, November 16, 2005 8:34 AM
> Subject: Re: Memory use
>
>
> On 16/11/05, Glenn Steen <glenn.steen at gmail.com> wrote:
>> On 16/11/05, Martin Hepworth <martinh at solid-state-logic.com> wrote:
> (snip)
>> > > -----Original Message-----
>> > > From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
>> > > Behalf Of José Angel Blanco González
>> > > Sent: 16 November 2005 12:39
>> > > To: MAILSCANNER at JISCMAIL.AC.UK
>> > > Subject: [MAILSCANNER] Memory use
>> > >
> (snip)
>> > >                     total            used            free shared
>> > > buffers        cached
>> > > Mem:            2840672    2812672     28000    0 126556
>> > > 2449792
>> > > -/+ buffers/cache:            236324       2604348
>> > > Swap:           1044184    77396         966788
> (snip)
>> Martin, AFAICS that'd be 2.7 GiB RAM (from the free output) which
>> probably means 3 GiB - "share memory graphics", or something similar.
>> So the tight situation would imply a very many MS clients, or a
>> "trusty" ol' leak (or several), wouldn't you agree?
> Argh! Think, then type....
> As is perfectly obvious from the numbers, the RAM situation is normal
> on this one... More or less all the memory in "buffers" and "cache"
> will be returned when needed, so the swaping is not really due to a
> tight situation at all (more probable is page age). ISTR that the
> stock kernel of RH9 was a tad stupid when it came to swap priorities
> etc, so that might give an ... illusion... of a tight RAM. But the
> numbers above don't really show that.
> Martins suggested vmstat will probably show that no (or next to no)
> swaping is happening.
>
> If I were you, I'd seriously think on moving to a more ... modern ...
> distro/kernel.
>
> --
> -- Glenn
> email: glenn < dot > steen < at > gmail < dot > com
> work: glenn < dot > steen < at > ap1 < dot > se
>
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