Re: [dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0

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On 07/28/2015 11:24 PM, Mike Snitzer wrote:

I am willing to do tests if you have any idea to be tested - I can
reproduce it quite easily.

You can try disabling dm-crypt's parallelization by specifying these 2
features: same_cpu_crypt submit_from_crypt_cpus


Hi,

please try adding follwoing cryptsetup perf. options while unlocking your LUKS containers: --perf-submit_from_crypt_cpus and --perf-same_cpu_crypt.

Perhaps focus on SSD disk as previous unresolved report mentioned SSD too

Regards
O.
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