Thanks a lot ...
I did not know about other mailing list. I have subscribed there as well ...
Thanks for your reply. That clears my first doubt. However if you do not
mind i have one more query. I will be glad if you answer that ... whenever
the RAM available on server is less that 10MB i start getting unable to fork
errors .... and I endup rebooting the server ....
We have already placed purchase order for Redhat linux 7.0 and will upgrade
very soon ....
Thanks for suggestion .....
----- Original Message -----
From: "Ian C. Sison" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, August 08, 2001 10:03 PM
Subject: [plug] Re: [ph-isp] Memory management on Linux
>
> 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
> [EMAIL PROTECTED]
>
> 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
> >
> >
> >
>
>
>
> _
> Philippine Linux Users Group. Web site and archives at
http://plug.linux.org.ph
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>
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>
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