Evren Yurtesen wrote:
>> Server info:
>> HP DL380 G4
>> debian sarge
>> dual processor 3.2ghz xeon
>> 2GB Ram
>> 5x10k rpm scsi disks, raid5
>> 128MB battery backed cache (50/50 r/w)
>> ext3 filesystems
>>
>> brien
>
> You are distributing the reads and writes on 5 disks here. Dont you
> think that 2.40mb/s is a little bit slow compared to the horsepower you
> have?
Raid5 doesn't distribute disk activity - it puts the drives in lockstep
and is slower than a single drive, especially on small writes where it
has to do extra reads to re-compute parity on the existing data.
> If you scale it down to my system, I think 1/10 performance is normal...
Its the RAM and disk cache that makes this system work.
--
Les Mikesell
[EMAIL PROTECTED]
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