Eric Anderson wrote: > On 03/07/07 23:13, Fluffles wrote: >> >> On what hardware is this? Using any form of geom software RAID? >> >> The low Per Char results would lead me to believe it's a very slow CPU; >> maybe VIA C3 or some old pentium? Modern systems should get 100MB/s+ in >> per-char bonnie benchmark, even a Sempron 2600+ 1.6GHz 128KB cache which >> costs about $39. Then it might be logical DD gets higher results since >> this is more 'easy' to handle by the CPU. The VFS/UFS layer adds >> potential for nice performance-increases but it does take it's toll in >> the form of cputime overhead. If your CPU is very slow, i can imagine >> these optimizations having a detrimental effect instead. Just >> guessing here. > > > Before making speculative claims about slow CPU's and putting the VIA > C3 in with that pile, please at least refer to what makes you believe > that it is an issue. Comparing the VIA C3 to 'some old pentium' isn't > exactly fair or accurate, and inferring it isn't a modern system isn't > true either.
I'm sorry if i offended you. But it is well-known that C3 Nehemiah has a much lower IPC than processors from AMD and Intel. For general purpose comparisons, i would guess a 400MHz Athlon 64 to outperform the 1GHz C3 Nehemiah; just guessing here! Not to talk about Core2Duo who has even higher IPC. Though Nehemiah does have some fancy MPEG/AES hardware acceleration stuff built-in, which makes it a suitable platform for a Media Center or anything like that. Personally i think a budget AMD processor to be a better option; they have the same power consumption under standby mode (thanks to Cool'N'Quiet) but can deliver much higher performance when needed (such as HighDef 1080p video?). 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. - Veronica _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
