[Bug 1703440] Re: xenial fio 2.2.10 randwrite: "random" data NOT random, highly compressible -> highly misleading output

2022-01-04 Thread Launchpad Bug Tracker
[Expired for fio (Ubuntu) because there has been no activity for 60 days.] ** Changed in: fio (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1703440

[Bug 1703440] Re: xenial fio 2.2.10 randwrite: "random" data NOT random, highly compressible -> highly misleading output

2021-11-05 Thread Rolf Leggewie
Anything still left to be done for focal or later? ** Changed in: fio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1703440 Title: xenial fio 2.2.10

[Bug 1703440] Re: xenial fio 2.2.10 randwrite: "random" data NOT random, highly compressible -> highly misleading output

2017-08-15 Thread Sitsofe Wheeler
@fmyhr: After grovelling through the fio commits I've come across https://github.com/axboe/fio/commit/1e7f82e20c088e3f564ad24e37bb873b7ac37d3a which says old versions of fio had problems reaching compressability targets with large (above 64k) blocksizes which matches this launchpad bug's scenario

[Bug 1703440] Re: xenial fio 2.2.10 randwrite: "random" data NOT random, highly compressible -> highly misleading output

2017-08-14 Thread Sitsofe Wheeler
Something else to bear in mind is that because you aren't using direct=1 (see http://fio.readthedocs.io/en/latest/fio_doc.html#cmdoption-arg- direct ) there's nothing (other than size) stopping your I/O being entirely cached in RAM thus creating unrealistically fast speeds. Worse still, there's a