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Old December 18th, 2011, 19:01
ssanders47 ssanders47 is offline
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Default Long pauses in getblk
Anyone heard of this?

FreeBSD 8.1 system with 24GB and a 3ware raid card is under a heavy disk I/O load. ~300MB/s written to a large array.

Pretty regularly, disk I/O drops to zero and nearly every running process is hanging in getblk. Whatever this condition is, it can last up to 10 seconds.
Last edited by DutchDaemon; December 19th, 2011 at 04:18.
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Old December 20th, 2011, 22:32
aragon aragon is offline
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I suspect this will be better considered in one of the mailing lists...
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Old December 21st, 2011, 12:52
Crivens Crivens is offline
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SMART status?
Errors in dmesg?
Do you use AHCI? In that case, I would try again without as some discs can have buggy firmware.
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Old December 21st, 2011, 13:47
ssanders47 ssanders47 is offline
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Thanks for the suggestions. Smart status looks OK and there are no errors in the message logs. I don't believe we're using AHCI but its a good point and I will check.
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