Re: On linux kernel packaging issue

[Eduard Bloch <edi@gmx.de>]

#include <hallo.h>
* Michael Poole [Sun, Nov 09 2003, 09:22:13AM]:
> Eduard Bloch writes:
> 
> > Do you see now that 8 of your 10 percent come directly from the
> > application code and other two maybe from the optimized libc? There is
> > not{hing| much} we have won using an optimised kernel. But the placebo
> > effect has been demonstraded once again.
> 
> You have not shown what you claim you have shown.  You have shown that

No. Please read my initial mail then and what Glenn tried to proove with
his bzip2 test.

> for one specific application you get a 10% speedup when you optimize
> user-space (which, like I said before, is where it spends almost all
> its time).  Martin Schulze suggested elsewhere in this thread that 10%
> is where you should start being interested in optimizating user space,
> and that the kernel may see useful benefit from lower speedups.

Feel free to file a bug against bzip2. It could easily be optimised in
the package with he same method that atlas and openssl use: install
custom libbzip2.so... file into /usr/lib/i686/.

> bzip2 is not representative of applications that spend significant
> amounts of time in the kernel, but people do run such applications and

I know, and that was NOT my claim (but the counterpart!). Don't put
words in my mouth.

MfG,
Eduard.