kernel log buffer size (also default HZ)...

[Daniel J Blueman]

Hi guys,

CONFIG_LOG_BUF_SHIFT=17 is too small when debugging certain types of
kernel issue. I've raised a report at:
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/424810

Since it's a zero-risk and lean change, how much chance is there to
get it in Karmic, in order to make bug-catching easier, as it's easy
to stumble on this?

Separately, upstream moved to using HZ=100 on x86(-64) (see benchmark
improvement at http://lwn.net/Articles/331607/), due to all
performance-affecting timers being asynchronous (via hrtimers and
tickless). I raised the discussion at:

http://groups.google.com/group/linux.kernel/browse_thread/thread/e6b370e71ddfe153/f164d6068360b034?#f164d6068360b034

Is thus seems reasonable to bring the benefit to Ubuntu, keeping it
more competitive with other distros/OSs. Is this possible?

Thanks,
 Daniel
--
Daniel J Blueman