[Summary]Linux Performance Tuning

Hi Managers,
Well what can i say i had only one response, which is attached below,
other  than that i have found Red Hat Linux Documentation fine, but
enough there are chapters on optimizing  the performance, and one
thing i also find usefull are notes from a lug presentation at

http://www.kalamazoolinux.org/presentations/19991221/

Sorry, i had not much input to summarise, thanks to Adam for his input

Walid.


---------- Forwarded message ----------
From: rsklnkv <rsklnkv-r3WryP/[email protected]>
Date: Tue, 28 Sep 2004 18:45:22 -0500
Subject: Re: Linux Performance Tuning
To: Jawal Sawa <[email protected]>

Greetings.

Off the top of my head, I had good luck (specifically relating to IO) with
the book System Performance Tuning 2nd Edition by Musumeci.

http://www.amazon.com/exec/obidos/tg/detail/-/059600284X/qid=1096414853/sr=8-
1/ref=pd_csp_1/002-8757131-8984004?v=glance&s=books&n=507846

Sorry I don't have more. Good luck!

Regards.
Adam

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obey orders, to do as you are told and to fa



---------- Original Message -----------
From: Jawal Sawa <[email protected]>
To: linuxmanagers-35TzE1X9F6582KRnZfj+bdi2O/[email protected]
Sent: Tue, 28 Sep 2004 18:50:21 +0300
Subject: Linux Performance Tuning

> Dear Managers,
> I am looking into enhancing some o the linux machines, i have already
> run sar on them to collect some data, and was wondering what
> information is out there to make the systems perform better they are
> data crunchers, that use large sets of data, so /proc/sys/kernel/shm*
> are one of my targets, but looking around for the best setting for
> this i have found the following on an old perf. tuning tool vtad  "By
> looking at /proc/sys/kernel/shmmax and comparing it to the first
> entry in /proc/meminfo/Mem (physical memory), we can see the shared memory
>        limit as a percentage of physical memory. VTad recommends
> allowing at least 10% of physical memory to be shared, and prefers
> 25%. This helps Apache to cache files, if that feature is enabled"
> well one admin told me its always  better to set it up to the same as
> physical memory as it will not hurt, and i tend to agree with him, so
> my question are the following :
> 1- how many people use VTad?
> 2- I have found another tool similar to VTad,  called sarcheck, are
> there any other tools beside the three mention here in my mail to
> suggest performance tuning parameters?
>
> the Linux boxes i am talking about do heavy data crunching, and
> network I/O, are there any  good books about the subject ?
>
> I will summarize given time, and responses of course :)
>
> TIA
> good day,
>
> Jawal
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