Verifying module

[Mag Gam]

I am talking about scheduling latency and more important  network latency

On Mon, Jan 3, 2011 at 3:06 PM, Mulyadi Santosa
<mulyadi.santosa at gmail.com> wrote:
> Hi...
>
> On Mon, Jan 3, 2011 at 20:06, Mag Gam <magawake at gmail.com> wrote:
>> We are planning to deploy a system for a client. I was told that
>> leaving unnecessary modules (ie. jfs, usb, etc...) will not cause
>> latencies in the kernel however the client is very sensitive.
>
> That is right...module is only loaded as needed..
>
>>They
>> care about latencies in microseconds and I was wondering if leaving
>> unnecessary modules loaded would cause it
>
> if you just "leave" them, it wouldn't add any overhead IMHO. Only if
> it is loaded. For that, you could either blacklist them or
> better....deselect them during kernel config. Whichever suits you
> better
>
> PS: If you're really sensitive, perhaps you could make all of your
> modules build into the kernel image...therefore there won't be any
> modules. But beware, the kernel image will be damn big :)
>
>>and how can I measure the
>> kernel latency (with lmbench if possible) w/o necessary modules.
>
> what latency are we talking here? scheduling latency?
>
> --
> regards,
>
> Mulyadi Santosa
> Freelance Linux trainer and consultant
>
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com
>