Re: [PATCH 0/5] LSM hook updates

[serue@us.ibm.com]

Quoting Chris Wright (chrisw@osdl.org):
> * Chris Wright (chrisw@osdl.org) wrote:
> > I'll have some numbers tomorrow.  If you'd like to run SELinux that'd
> > be quite useful.
> 
> These are just lmbench and kernel build numbers (certainly not the best
> for real benchmark numbers, but easy to get a quick view run).  This is
> just baseline (i.e. default, nothing loaded).

Here are some numbers on a 4way x86 - PIII 700Mhz with 1G memory (hmm,
highmem not enabled).  I should hopefully have a 2way ppc available
later today for a pair of runs.

dbench and tbench were run 50 times each, kernbench and reaim 10 times
each.  Results are mean +/- 95% confidence half-interval.  Kernel had
selinux and capabilities compiled in.

A little surprising: kernbench is improved, but dbench and tbench
are worse - though within the 95% CI.

dbench (throughput, larger is better):
original: 357.957780 +/- 3.509188
patched:  351.266820 +/- 4.736168

tbench (throughput, larger is better):
original: 38.710270 +/- 0.028970
patched:  38.210506 +/- 0.032954

kernbench (time, smaller is better):
original: 91.837000 +/- 0.324471
patched:  91.466000 +/- 0.308797

reaim (#children vs throughput, larger is better):

original:
1 48702.197000 1875.223996
3 131411.870000 4497.107969
5 130219.174000 6365.289551
7 162377.027000 3131.071134
9 155432.904000 4964.935291
11 169784.384000 4490.812272
13 164540.169000 3902.652904
15 172983.569000 3149.934591

patched:
1 47525.273000 1509.578035
3 132151.651000 2282.043786
5 131244.291000 5874.212092
7 165629.693000 4646.641230
9 156163.110000 3422.903849
11 170608.526000 4132.988693
13 164863.102000 3664.214481
15 172947.803000 2548.662380

thanks,
-serge