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On 07/12/2020 01.49, Felix Miata wrote:
Carlos E. R. composed on 2020-12-04 12:45 (UTC+0100):
Felix Miata wrote:
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Is there something about normal or abnormal usage that could account for the vastly reduced speed after 11 month's 24/7 uptime, then be significantly, but not entirely, relieved by clearing the existing partitions and writing new tables? Is there any reason not to proceed with the return
On rotating rust, you have to measure speed on the same partition each time. On SSD I do not know.
AFAICT, hdparm -t only measures HDD/SSD speeds, not filesystem or partition speeds.
Not really. hdparm measures disk speed, true, but does so using the partition you specify, if you do. You can check yourself doing tests on a rotating disk on several partitions and notice that the speeds differ. hdparm -tT /dev/sdb hdparm -tT /dev/sdb1 hdparm -tT /dev/sdb10 Once I divided a disk in 50 or so equal partitions and tested them all. It was notable faster at about 1/3 of the way. I have not experimented with SSDs, though. 50MB/s is ridiculous. -- Cheers / Saludos, Carlos E. R. (from 15.1 x86_64 at Telcontar)