At 09:46 AM 5/12/2010, A. Wright wrote:
While I will run some further tests here, I thought I would
ask:
Is anyone else seeing poor disk I/O scheduling or locking
behaviour in 8.0?
Hi,
On my backup server I am seeing somewhat better
throughput/performance, at least with ZFS, but I have not done any
rigorous comparisons. Certainly nothing perceptible from userland
Is anyone aware of any of the filesytem changes that
have occurred since 7.2 that may explain this?
There are a lot, but then again the act of installing / upgrading
could just mean you are now hitting bad sectors on the drive ?
Does anyone have any thoughts on how to conclusively
prove that the drive is at fault? I have not seen any
errors logged to dmesg.
Start with smartmontools to ask your disk if it has logged any errors
and check once a day or so to see if sectors are being remapped.
---Mike
Thanks,
Andrew.
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Mike Tancsa, tel +1 519 651 3400
Sentex Communications, [email protected]
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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