Re: Slow dc3dd in 3.18 on x86

From: Martin K. Petersen
Date: Fri Oct 24 2014 - 15:12:48 EST


>>>>> "Michael" == Michael L Semon <mlsemon35@xxxxxxxxx> writes:

Michael> This week, a simple `dc3dd wipe=/dev/sda5` operation had speeds
Michael> cut from 10-15 MB/s down to less than 1.8 MB/s. With this
Michael> method, syncs took so long that magic SysRq keys were needed to
Michael> stop the PC.

Please send me the output of:

# grep . /sys/block/sda/integrity/*

Thanks,
Martin

--
Martin K. Petersen Oracle Linux Engineering
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