Am 06.05.2012 17:45, schrieb Stan Hoeppner:
On 5/6/2012 5:33 AM, Martin Steigerwald wrote:
Am Sonntag, 6. Mai 2012 schrieb Stefan Priebe:
It is a raid 10 of 20 SATA Disks and i can only write to them with
about 700kb/s while doing random i/o. I tried vanilla Kernel 3.0.30
and 3.3.4 - no difference. Writing to another partition on another xfs
array works fine.
Additionally what RAID is this? SoftRAID or some - which one? - hardware
RAID controller? And what disks are used, whats the rpm of these?
I doubt much of this stuff matters. Stefan's filesystem is 96% full,
w/~200GB free. This free space is likely heavily fragmented. If he's
doing allocation in this fragmented free space I'd think that would
fully explain his write performance dropping off a cliff due to massive
head seeking.
Thanks Stan that's it. After deleting 200GB-300GB it's running fine again.
What is the general recommandation of free space?
Greets Stefan
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