Re: [Devil-linux-develop] RTOS patch for DL

[Serge L. <se...@nn...>]

Dear Sirs,

Saturday, July 23, 2005, 1:35:54 PM, you wrote:

SL> it. Unfortunately vhz patch and performance patch are incompatible
SL> now. 
I've forgotten to say I applied this performance patch without PAX and
grsecurity.
I've tested my system by SysBench (system performance  benchmark,
http://sysbench.sourceforge.net/) with performance patch and without it.

># ./sysbench --num-threads=500  --max-requests=10000 --test=threads  run
>sysbench v0.4.0:  multi-threaded system evaluation benchmark
>
>Running the test with following options:
>Number of threads: 500
>
>Doing thread subsystem performance test
>Thread yields per test: 1000 Locks used: 8
>Threads started!
>Done.
                          Without Perf patch    |  With Perf patch
                                                |
>Test execution summary:                        |
>    total time:                  236.9318s     |  359.9786s
>    total number of events:      10000         |  10000
>    total time taken by                        |
>    event execution:             113411.5786   |  179826.3306
>    per-request statistics:                    |
>         min:                    0.0010s       |  13.8871s
>         avg:                    11.3412s      |  17.9826s
>         max:                    93.7898s      |  21.2820s
>         approx.  95 percentile: 61.2178s      |  18.1917s
>                                               |
>Threads fairness:                              |
>    distributin:                 45.45/79.44   |  100.00/100.00
>    execution:                   42.06/78.00   |  99.62/99.93

The most interesting result is "approx.  95 percentile:", i.e. the
most evident time of thread execute.


-- 
Best regards,
 Serge                            mailto:se...@nn...