Stan, Correct. On my severs I too have sound cards and USB. I don't really need them so I would rather unload them. I suppose I can do a macro benchmark and state if it helped or not but I would like to know on a micro level to see if it helped. I think one possibility is to do "lat_pipe" from lmbench to measure transaction latency of a UNIX pipe.
My goal is to have the most optimal kernel/tuning since our application is very latency sensitive. On Sat, Nov 27, 2010 at 11:01 AM, Leandro Minatel <lean...@minatel.com.ar> wrote: > > On Sat, Nov 27, 2010 at 2:43 AM, Stan Hoeppner <s...@hardwarefreak.com> > wrote: >> >> Mag Gam put forth on 11/26/2010 11:14 PM: >> >> > unloading unnecessary modules >> >> If they are unnecessary modules, the kernel won't load them in the first >> place, as the hardware they interface with doesn't exit. If they're not >> loaded, how can you unload them? >> >> I think you need to provide us with _your_ definition of "unnecessary". > > I suppose he's talking about that modules loaded for hardware that it's > present but unused, for example: the sound card. For my servers I generally > buy "clons" and they have an embedded sound card. So, we don't need the > sound modules loaded at startup. > Another example (maybe) is the USB, mouse, SATA/PATA when we have a SCSI > controller, etc. > > >> >> If you're really that concerned about kernel footprint and performance, >> you can always roll your own kernel, as I do, building in the drivers >> you know you need, none that you don't, and disable loadable module >> support. However, this can get tricky if you don't know precisely what >> you're doing. >> > > I don't know. I decided long ago not to compile the kernel anymore. I do > prefer blacklisting modules instead. But, it's only my opinion. > >> >> -- >> Stan >> > > LMM > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktim2z-6tog=rsrqs1u0nd8zfjkivsh6yz7+2z...@mail.gmail.com