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Andi Kleen wrote: > Andi Kleen <ak@suse.de> writes: > >> I tested it on a NF4-Professional system with 8GB RAM and a single >> SATA disk. It first did nicely in LTP and some other tests, >> but during a bonnie++ run it eventually blocked with all >> IO hanging forever. No output either. I did a full backtrace >> and it just showed the processes waiting for a IO wakeup. > > Hmm, to follow myself up: after a few more minutes the machine recovered > and i could log in again (overall the stall was at least 5+ minutes > though) > > Not sure whom to blame, the IO driver might be actually innocent > and it just be one of the usual known but unfixed IO starvation problems. > > -Andi Hmm.. The system hanging up for 5 minutes and then recovering seems rather odd, as far as I know the timeouts in libata are all quite a bit shorter than that. Was there anything unusual in dmesg? If the IO commands weren't completing at the driver level then I would expect the error handling to kick in in some fashion.. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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