On Thu, Jan 15, 2009 at 11:46:09AM +0200, Pekka Enberg wrote:It would also be nice if someone could do the performance analysis on
the SLUB bug. I ran sysbench in oltp mode here and the results look
like this:
[ number of transactions per second from 10 runs. ]
min max avg sd
2.6.29-rc1-slab 833.77 852.32 845.10 4.72
2.6.29-rc1-slub 823.61 851.94 836.74 8.57
And no, the numbers are not flipped, SLUB beats SLAB here. :(
Um. More transactions per second is good. Your numbers show SLAB
beating SLUB (even on your dual-CPU system). And SLAB shows a lower
standard deviation, which is also good.