Re: Long test taking ages

On 2016-10-08 16:24, Gandalf Corvotempesta wrote:
> 2016-10-08 15:37 GMT+02:00 Carlos E. R. <[email protected]>:
>> The test is transparent, but does influence the operation of the disk,
>> making computer disk operation slower, and conversely, those operations
>> make the test slower. This is specially true while the disk is testing
>> for surface errors.
>>
>> Thus you should program the long test to happen when the hard disk is
>> basically idle. Probably not all disks at the same time. Perhaps a
>> region of the disk at a time. It may be possible that different hard
>> disk brand handle differently.
> 
> Thank you for the response.
> My biggest concern it that only on some of my servers is happening this.
> I have about 1 hundreds servers and only on 2 or 3 the smart test is
> causing very high load.
> And these servers aren't the most loaded.

I don't think that the amount of load matters, but that the load is
constant. If the load requests read/write from the disk, the surface
test has to stop. And it doesn't stop instantly.

I guess the disk brand, or version of its firmware, matters too.

I would compare the exact hardware and type of load on those machines
trying to find coincidences.

-- 
Cheers / Saludos,

		Carlos E. R.
		(from 13.1 x86_64 "Bottle" at Telcontar)

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