Re: RCU issue with SELinux (Re: SELINUX performance issues)

["Kaigai Kohei" <kaigai@ak.jp.nec.com>]

Hi James, thanks for your comment.

> > o dbench [ 4 processes run parallely on 4-CPUs / 10 times trials ]
> >                   ---- mean ----  - STD -
> > 2.6.8.1(disable)  860.249 [MB/s]   44.683
> > 2.6.8.1(enable)   714.254 [MB/s]   32.359
> > 2.6.8.1(+rwlock)  767.904 [MB/s]   27.968
> > 2.6.8.1(+RCU)     830.678 [MB/s]   16.352
> 
> Can you show the figures for 1 and 2 clients?

The results are as follows:
o dbench [ 1/2/4 processes run parallely on 4-CPUs / 10 times trials ]
- Average[MB/s] -  -1proc- -2procs- -4procs-
2.6.8.1(disable)    247.43   473.11   891.51
2.6.8.1(enable)     218.99   434.97   761.06
2.6.8.1(+rwlock)    225.18   432.80   802.62
2.6.8.1(+RCU)       231.84   444.30   820.00
--------------------------------------------
(*) 2.6.8.1(+RCU) is applied the take3-patch.

By the way, the results of dbench are sharply changed at every measurement.
I don't think it is statistically-significant.

--------
Kai Gai <kaigai@ak.jp.nec.com>


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