From: Jakob Oestergaard <jakob@unthought.net>
To: "chandrasekhar.nagaraj" <chandrasekhar.nagaraj@patni.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Load Balancing Performance
Date: Tue, 11 Mar 2003 11:02:35 +0100 [thread overview]
Message-ID: <20030311100235.GF14814@unthought.net> (raw)
In-Reply-To: <000001c2e7b4$bc52fcc0$e9bba5cc@patni.com>
On Tue, Mar 11, 2003 at 03:28:14PM +0530, chandrasekhar.nagaraj wrote:
> Hi,
>
...
> But instead of path switching for every buffer head (on call of make
> request), if we switch after 50 buffer heads(ie. after 50 times make
> request is called) then it results in a better performance.
> Is there any way to find out the optimum value so that the performance is
> optimum.
> The performance is not good only when load balancing is ON. Hence we need
> performance improvement in the case of load balancing.
> Or is there any other solution to this problem.
Make the request site tunable via. procfs.
Then create a (user space) utility which experiments with various
request sizes and finds the optimum. Run the tuning program once every
time you set up a new system or change hardware.
--
................................................................
: jakob@unthought.net : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:............{Konkhra}...............:
prev parent reply other threads:[~2003-03-11 9:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-11 9:58 Load Balancing Performance chandrasekhar.nagaraj
2003-03-11 10:02 ` Jakob Oestergaard [this message]
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