Some Unix benchmarks for those who are interesed
etc at fluffles.net
Thu Mar 8 17:34:29 UTC 2007
Ivan Voras wrote:
> Fluffles wrote:
>> The bonnie Per Char-benchmark is often bottlenecked by the CPU since it
>> requires either a lot of cpu power or a lot of memory activity; both
>> which puts demands on the cpu. If i see only 0.5MB in the Per
>> Char-benchmark, i would suspect a slow CPU. Slow is a relative term
>> though; C3 can be powerful enough for the task you bought it, so i don't
>> want to discredit it.
> I'm really puzzled by your high per-char results in bonnie++. Can you
> run it on a single disk? I've run it many times, both on hardware and
> software RAIDs and have never seen results > 1 MB/s on FreeBSD (Linux is
> a different matter...)
single drive (ad6, Maxtor MaxLine III 250GB SATA/150)
-------Sequential Output-------- ---Sequential Input--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU
20480 56395 42.7 55904 12.8 21497 5.9 56846 54.3 58328 8.2
Here the CPU is not the bottleneck but the disk itself. CPU is AMD
Athlon 64 3800+ (dualcore, 2.0GHz, 2x512KB cache, S939, 2x1GB DDR/400).
Maybe you are running a patched bonnie? By the way i'm not using
bonnie++ but the 'original' bonnie. Maybe that changes things a bit?
>From all the benchmarks i've seen and all that i've performed myself,
i've never seen that low per char scores like you. I cannot explain it
except maybe a *very* slow CPU or some other obscure software issue.
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