>>>>> "Mike" == Mike Smith <firstname.lastname@example.org> writes:
>> The AMI MegaRAID 1400 delivers between 16.5 and 19 M/s (the 19M/s
>> value is somewhat contrived --- using 8 bonnies in parrallel and
>> then summing their results --- which is not 100% valid)... but the
>> MegaRAID appears to be stable.
Mike> Hmm. Those numbers aren't so great though. I'd be interested
Mike> to know how busy the controller is during your test (use systat
Mike> -vmstat 1 and look at the amrd0 device), as well as how you've
Mike> configured it. AMI's default configurations for those
Mike> controllers is wildly inconsistent between one BIOS version and
Mike> the next.
Well... it's RAID-5 across the same 8 drives with all 8 drives on one
LVD chain (same configuration as the other test). I have tried the
128k stripe, but it was slower than the default 64k stripe.
>> I would like to know, however, if there are any planned or
>> in-the-works utility programs for the amr device. In particular, a
>> program to print the state of the array would be useful.
Mike> I'm currently waiting on AMI for more documentation, at which
Mike> point there will indeed be more monitoring and control
Mike> facilities added.
|David Gilbert, Velocet Communications. | Two things can only be |
|Mail: email@example.com | equal if and only if they |
|http://www.velocet.net/~dgilbert | are precisely opposite. |
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