Re: [Bug #11308] tbench regression on each kernel release from 2.6.22-> 2.6.28

From: Eric Dumazet
Date: Fri Nov 21 2008 - 13:17:42 EST


Christoph Lameter a écrit :
AIM9 results:
TCP UDP
2.6.22 104868.00 489970.03
2.6.28-rc5 110007.00 518640.00
net-next 108207.00 514790.00

net-next looses here for some reason against 2.6.28-rc5. But the numbers
are better than 2.6.22 in any case.


I found that on current net-next, running oprofile in background can give better bench
results. Thats really curious... no ?


So the single loop on close(socket()), on all my 8 cpus is almost 10% faster if oprofile
is running... (20 secs instead of 23 secs)


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