The Natural Philosopher  wrote:
> On 21/10/2019 06:56, A. Dumas wrote:
>> On 21-10-2019 01:40, bob prohaska wrote:
>>> Is there a program for testing speed of storage devices anyhere in
>>> the Raspbian apt-get universe? I'd like to test read/write speeds
>>> of a microSD card that seems to be getting stuck from time to time.
>>>
>>> Obviously, I'd have to use a USB-microSD adapter, but for the magnitude
>>> of deadlock I'm looking for that should be plenty fast.
>>
>> If it's mounted: sudo hdparm -t --direct /dev/sda2
>> But "getting stuck" sounds like trouble. Veterinary friends used to say:
>> "a sick bird is a dead bird" and much the same is true for sd cards I'm
>> afraid.
>
> I am afraid I have to add my vote to that.
>
>
Quite possibly the microSD card is on its way out. Before spending the $
to replace it I'd like to be more sure than I am now. It's a Samsung Evo
Plus 128 GB, only a few months old. However, I did accidentally run it to
about 97% capacity, which I gather tends to defeat wear-leveling features.

Hdparm's man page suggests it's a bigger hammer than needed but might work.
Something similar to CrystalDiskMark would do the job, but far as can be
told it's strictly a Windows program and I have no Windoww hosts available.

Thanks to both of you for reading and replying!

bob prohaska

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