Il giorno 21 dic 2017, alle ore 11:57, Paolo Valente =

[off-list ref] ha scritto:

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Hi,
a few minutes ago I bumped into this apparent severe regression, with =

4.15-rc4 and an SSD PLEXTOR PX-256M5S. If, with none as I/O scheduler, I =
do

fio --name=3Dglobal --rw=3Drandread --size=3D512m --name=3Djob1
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I get
read : io=3D524288KB, bw=3D34402KB/s, iops=3D8600, runt=3D 15240msec
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This device had to reach at least 40 KIOPS. I retried with mq-deadline =

too, and then with a 4.14, same outcome in all cases. I asked some =
colleague to repeat the test with his/her device. Same outcome, so far, =
also with an SSD 850 EVO 250GB.

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I'm sorry if I'm making some colossal mistake.
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Forget it, sorry. I was confused by a failed test where iodepth was =
higher than 1, and I am sleeping too little ...

Thanks,
Paolo

Thanks,
Paolo
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