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List:       smartmontools-support
Subject:    Re: [smartmontools-support] smartctl kills performance
From:       Christian Franke <Christian.Franke () t-online ! de>
Date:       2012-06-25 19:39:59
Message-ID: 4FE8BE8F.7070607 () t-online ! de
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Ole Tange wrote:
> On Tue, Jun 19, 2012 at 7:33 AM, Christian Franke
> <...>  wrote:
>> Ole Tange wrote:
>>> If it is normal that it kills performance, it would be good to stress
>>> this in the manual, as the man page indicates no serious impact
>>> ("Selective self-tests can be run during normal system operation").
>> Normally this should be the case. You may want to sent a complaint to the
>> drive vendor.
> Thanks for your insightful reply. Even if I sent a complaint to my
> vendor that does not mean they (and all their competitors) will
> implement it immediately and offer old drives a firmware upgrade with
> the fix. For that reason I still think it would be good to mention it
> in the man-page that this can kill the drive's performance. That way
> it will be less of a surprise if the performance degrades.
>
> So something like:
>
>     This command can be given during normal system operation, it can,
> however, degrade performance of the drive, and thus should only be
> run, if a lower performance is acceptable during the test.

I added a note to man page.

> It would also be nice if this last line was printed when you start the test:

I don't think extra verbosity is needed here.

Thanks,
Christian


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