Re: Best OS & Configuration for Dual Xeon w/4GB & Adaptec

Vivek Khera wrote:

>>> If you do put on FreeBSD 6, I'd love to see the output of  "diskinfo
>>> - v -t" on your RAID volume(s).
>>>
>> Not directly related ...
>> i have a HP dl380 g3 with array 5i controlled (1+0), these are my
>> results
>> [...]
>> is this good enough?
>
>
> Is that on a loaded box or a mostly quiet box?  Those number seem
> rather low for my tastes.  For comparison, here are numbers from a
> Dell 1850 with a built-in PERC 4e/Si RAID in a two disk mirror.  All
> numbers below are on mostly or totally quiet disk systems.

My numbers are on totally quiet box, i've just installed it.

>
> amrd0
>         512             # sectorsize
>         73274490880     # mediasize in bytes (68G)
>         143114240       # mediasize in sectors
>         8908            # Cylinders according to firmware.
>         255             # Heads according to firmware.
>         63              # Sectors according to firmware.
>
> Seek times:
>         Full stroke:      250 iter in   0.756718 sec =    3.027 msec
>         Half stroke:      250 iter in   0.717824 sec =    2.871 msec
>         Quarter stroke:   500 iter in   1.972368 sec =    3.945 msec
>         Short forward:    400 iter in   1.193179 sec =    2.983 msec
>         Short backward:   400 iter in   1.322440 sec =    3.306 msec
>         Seq outer:       2048 iter in   0.271402 sec =    0.133 msec
>         Seq inner:       2048 iter in   0.271151 sec =    0.132 msec
> Transfer rates:
>         outside:       102400 kbytes in   1.080339 sec =    94785
> kbytes/sec
>         middle:        102400 kbytes in   1.166021 sec =    87820
> kbytes/sec
>         inside:        102400 kbytes in   1.461498 sec =    70065
> kbytes/sec
>
>
Umm, in my box i see better seektimes but worst transfer rates, does it
make sense?
i think i have something wrong, the question i cant answer is what
tunning  am i missing?

---
Miguel