On Fri, Aug 24, 2007 at 11:11:56PM +0200, Jan-Bernd Themann wrote:
> (when they are available for
> POWER in our case).
hrtimer worked fine on the powerpc cell arch last summer.
I assume they work on p5 and p6 too, no ??
> I tried to implement something with "normal" timers, but the result
> was everything but great. The timers seem to be far too slow.
> I'm not sure if it helps to increase it from 1000HZ to 2500HZ
> or more.
Heh. Do the math. Even on 1gigabit cards, that's not enough:
(1gigabit/sec) x (byte/8 bits) x (packet/1500bytes) x (sec/1000 jiffy)
is 83 packets a jiffy (for big packets, even more for small packets,
and more again for 10 gigabit cards). So polling once per jiffy is a
latency disaster.
--linas
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
