I am talking about scheduling latency and more important network latency On Mon, Jan 3, 2011 at 3:06 PM, Mulyadi Santosa <[email protected]> wrote: > Hi... > > On Mon, Jan 3, 2011 at 20:06, Mag Gam <[email protected]> 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 >
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