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SubjectRe: side-by-side Re: BYTE Unix Benchmarks Version 3.6
From: venom@sns.it

> I usually run byte bench regularly with every new kernel, so I see some
> strange results here.
>
> From your numbers, I would say you are using a PIII 600/900 Mhz (more or
> less). It is not an AMD AThlon or a PIV, since float and double are too
> slow, not it is a K6 because they are too fast.
Yes, I ran the test on a HP Omnibook 600 (PIII@900)

[...]
> seeing this I think you had something running in background using your CPU
> while you where running int tests. if you loock at bm/results/log
> (log.accum if you did some other run recently)
> should find lines like:
>
> Arithmetic Test (type = int)|10.0|lps|227163.1|227158.7|6
>
> that is a little more interesting if you are under load.
No other load, just top and a less of a few files.

[...]
> > >Process Creation Test 9078.6 lps 5422.1 lps
> > Execl Throughput Test 998.0 lps 771.6 lps
>
> this is interesting, but seeing previous results about int and short,
> I am curious about your real load. I am quite curious if with 2.5 you are
> using kernel preemption.
No load, but preemption.

> > File Read (10 seconds) 1571652.0 KBps 1553289.0 KBps
> > File Write (10 seconds) 109237.0 KBps 132002.0 KBps
> > >File Copy (10 seconds) 24329.0 KBps 17994.0 KBps
> > File Read (30 seconds) 1562505.0 KBps 1540682.0 KBps
> > File Write (30 seconds) 113152.0 KBps 137781.0 KBps
> > File Copy (30 seconds) 14334.0 KBps 11460.0 KBps
>
> I saw the save with IDE disks... again, are you using kernel preemption?
ang again, yes ;-)

> > C Compiler Test 470.9 lpm 450.9 lpm
> > Shell scripts (1 concurrent) 980.4 lpm 876.7 lpm
> > Shell scripts (2 concurrent) 544.1 lpm 480.3 lpm
> > Shell scripts (4 concurrent) 287.0 lpm 251.0 lpm
> > Shell scripts (8 concurrent) 147.0 lpm 126.0 lpm
>
> In my tests generally shell scripts are faster with 2.5 kernel.

In any case I'll run again the test with the 4.1 version of Unix Bench.
I'll post the result using as "baseline" the results of the 2.4.19 again 2.5.33 and hopefully 2.4.20-pre5aa1.

Ciao,
Paolo
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