Re: [smartmontools-support]Does self-tests reduce disk IO performance

[<hc...@ce...>]

Hi Denis,

We've made some performance tests sometime ago with OZONE with smart
tests on/off and these seemed rather negligible.... still we schedule
tests in least load hours.

Cheers,
Hugo

PS: Some of the results are there ... I don't remenber all the details
but at least you can have a look....
http://hcacote.home.cern.ch/hcacote/data_services/iozone_smart_tests_lxfs6091_plots.htm

Denis Solovyov wrote:
> Question not affected smartmontools directly, but I believe it's the
> best place to know something for what I couldn't find a trustworthy
> answer anywhere.
> 
> Will short and long self-tests reduce HDD performance (theoretically and
> practically)?  Are tests suspended while disk does other IO operations?
> 
> Should I try to run these tests in the hours of the least load, or is it
> OK to run them whenever I wish?
> 
> With the best regards,
> Denis Solovyov