--- Jesper Juhl <[EMAIL PROTECTED]> wrote: > On 05/07/07, Jesper Juhl <[EMAIL PROTECTED]> wrote: > > On 05/07/07, Martin Knoblauch <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > > > > I'd suspect you can't get both at 100%. > > > > I'd guess you are probably using a 100Hz no-preempt kernel. Have > you > > tried a 1000Hz + preempt kernel? Sure, you'll get a bit lower > > overall throughput, but interactive responsiveness should be better > - > > if it is, then you could experiment with various combinations of > > CONFIG_PREEMPT, CONFIG_PREEMPT_VOLUNTARY, CONFIG_PREEMPT_NONE and > > CONFIG_HZ_1000, CONFIG_HZ_300, CONFIG_HZ_250, CONFIG_HZ_100 to see > > what gives you the best balance between throughput and interactive > > responsiveness (you could also throw CONFIG_PREEMPT_BKL and/or > > CONFIG_NO_HZ, but I don't think the impact will be as significant > as > > with the other options, so to keep things simple I'd leave those > out > > at first) . > > > > I'd guess that something like CONFIG_PREEMPT_VOLUNTARY + > CONFIG_HZ_300 > > would probably be a good compromise for you, but just to see if > > there's any effect at all, start out with CONFIG_PREEMPT + > > CONFIG_HZ_1000. > > > > I'm currious, did you ever try playing around with CONFIG_PREEMPT* > and > CONFIG_HZ* to see if that had any noticable impact on interactive > performance and stuff like logging into the box via ssh etc...? > > -- > Jesper Juhl <[EMAIL PROTECTED]> > Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html > Plain text mails only, please http://www.expita.com/nomime.html > > Hi Jesper,
my initial kernel was [EMAIL PROTECTED] I have switched to 300HZ, but have not observed much difference. The config is now: config-2.6.22-rc7:# CONFIG_PREEMPT_NONE is not set config-2.6.22-rc7:CONFIG_PREEMPT_VOLUNTARY=y config-2.6.22-rc7:# CONFIG_PREEMPT is not set config-2.6.22-rc7:CONFIG_PREEMPT_BKL=y Cheers ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
