[devel] [PATCH 0/3] optimize rpmsetcmp()

[Dmitry V. Levin]

On Fri, Nov 26, 2010 at 10:35:37AM +0200, Kirill A. Shutemov wrote:
> On Fri, Nov 26, 2010 at 12:04:23AM +0200, Kirill A. Shutsemov wrote:
> > 
> > Tested on Intel Core2 Duo P9500, 3GiB RAM. i586.
> 
> apt-shell < /dev/null
[...]
> Around 41% of speed up.

On AMD Opteron Processor 275:
without patches:
2.98user 0.19system 0:03.18elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+10142minor)pagefaults 0swaps
with patches:
2.20user 0.21system 0:02.42elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9978minor)pagefaults 0swaps
speedup is around 24%

On AMD Opteron Processor 2216:
without patches:
2.42user 0.02system 0:02.44elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9784minor)pagefaults 0swaps
with patches:
1.86user 0.02system 0:01.88elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9601minor)pagefaults 0swaps
speedup is around 23%

On Intel Xeon 5110
without patches:
2.98user 0.04system 0:03.02elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9789minor)pagefaults 0swaps
with patches:
2.54user 0.01system 0:02.55elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9608minor)pagefaults 0swaps
speedup is around 16%

On Intel Xeon E5520
without patches:
2.02user 0.00system 0:02.02elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9730minor)pagefaults 0swaps
with patches:
1.77user 0.00system 0:01.77elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+9565minor)pagefaults 0swaps
speedup is around 12%

Not so amazing as on your test platform, but awesome anyway.
I'm going to apply these patches.
If anybody has objections, please speak up now.


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