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

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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







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