On 11/7/18 4:38 PM, Sitsofe Wheeler wrote: > On Wed, 7 Nov 2018 at 11:09, Federico Motta <federico@xxxxxxxxx> wrote: >> >> Hi, >> >> On 10/31/18 6:31 PM, Jeff Furlong wrote: >>>> Is it normal that the sum of these percentages is not 100 but it is around 133? >>> Looks like you're running fio 3.9. There was a recent patch, after the 3.11 release, to resolve. Try the latest from git. >>> >> Thank you, the script I wrote to keep my fio updated to the latest >> git-tag was missing a "--version-sort" :( >> >> With fio-3.12 the sum is 100 as expected. >> >> >> On 10/31/18 3:19 PM, Federico Motta wrote: >> ... >>> Is it possible to ask fio a measure of "how much device internal >> queues are filled"? >>> If yes, with which option(s)? >>> If not, do you know some other tools or procedures which can tell us that? >> >> Does somebody has ideas about that ^ ? > > I think fio will report something similar back on Linux when it is > able to work it out - see the "And finally, the disk statistics are > printed" section over in > https://fio.readthedocs.io/en/latest/fio_doc.html#interpreting-the-output > . The util percentage might be as good as it gets (i.e. a device that > can take more I/Os will have a low percentage). I think iostat > produces similar output to that too... > Actually I was wondering if a more direct or low level measure exists, but since I don't even know if that is possible I think the fio "util" percentage could be a good trade-off between "a low level measure" and "no measure available". Thank you :) Have a nice day, Federico
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