Ok before i answer your question here are some tips:
1. you can get more expert advise if you post your question on the
philippine linux users group mailing list, and newbie list.
To subscribe to the Linux Newbies' List: send "subscribe" in the body to
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2. please don't send any html formatted mail onto mailing lists, it's very
annoying..
======================
now for some helpful tips:
1. Your linux box is running a very old and VERY INSECURE version of
redhat linux (6.1). Unless you have updated your bind,lpd,wuftpd
packages among others, you are sure to be hacked in the near future.
2. Linux by design will use up ALL available memory for internal use of
buffers and cache (note the values under the words buffers/cache in the
dump of 'free' you posted). This behaviour enables linux to cache and
buffer disk i/o and keep everything residing in memory as long as
possible, for the fastest performance without having to go to disk for
files or data. This means, even if you have 2GB ram on your system, you
will still get the same usage pattern. As long as you dont see too much
swapping and the si/so values of the output of 'vmstat 5' remain at zero,
your servers fine.
On Wed, 8 Aug 2001, Himanshu Kulkarni wrote:
> BlankHi I am running Qmail MTA on Linux 6.1 ... the kernel version is Linux
>2.2.12-20 ..
>
> The configuration of this server is P3 with 256MB of RAM and 2*18.2GB HDD.
>
> on this server very frequently we have observed that the server is
> running out of memory, at times the available memory is as less as 4
> or 5 mb . However server never use swap. I am attaching the output of
> free command ....
>
> is there any known patch to fix this ...?? if any more inputs required
> from server I pl letus know we will send the info...
>
> total used free shared buffers cached
> Mem: 257728 250912 6816 8732 151780 74284
> -/+ buffers/cache: 24848 232880
> Swap: 1024088 1208 1022880
>
> total used free shared buffers
>cached
> Mem: 257728 251064 6664 9072 151780 74312
> -/+ buffers/cache: 24972 232756
> Swap: 1024088 1208 1022880
>
> total used free shared buffers
>cached
> Mem: 257728 250592 7136 8176 151780 74064
> -/+ buffers/cache: 24748 232980
> Swap: 1024088 1208 1022880
>
> total used free shared buffers cached
> Mem: 257728 251716 6012 9608 151780 74764
> -/+ buffers/cache: 25172 232556
> Swap: 1024088 1208 1022880
>
> total used free shared buffers cached
> Mem: 257728 250832 6896 9144 151780 74068
> -/+ buffers/cache: 24984 232744
> Swap: 1024088 1208 1022880
>
>
> regards
> himanshu
>
>
>
_
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