Toshiba disk low performance
chris at cretaforce.gr
Fri Jun 8 11:42:57 UTC 2018
I did some benchmarks and the problem exist in both Linux and FreeBSD.
I benchmark a server with Toshiba disks and a server with Seagate disks.
First I install debian without RAID-1. Then I install iozone.
Tests done with hdparm to test disk bandwidth and iozone to test random read/writes.
Here are the results:
As you can see the bandwidth for the Toshiba disks is slower than Seagate but this doesn't really matter.
The problem is the second test that does random read/writes which show the Toshiba has 10 times slower random write speed than the Seagate.
That's why the issue happens mostly during a "mysql import" and not other server tasks.
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