From: Tim Walker <tim.t.walker@seagate.com>
To: Nitin Mathur <nitinmathur@gmail.com>
Cc: "fio@vger.kernel.org" <fio@vger.kernel.org>
Subject: Re: fio error when using direct=1
Date: Mon, 30 May 2016 10:18:23 -0600 [thread overview]
Message-ID: <6630302606885540555@unknownmsgid> (raw)
In-Reply-To: <CAMy1HkEAccd5FwvUKpJMuaKtcGa_T18GXdivR06S8Ne7m0Qq=w@mail.gmail.com>
Others could probably answer, but in the meantime could you try
changing the 512B bssplit to 4K? I admit it's a bit of a swag...
Tim Walker
Systems Engineering
> On May 30, 2016, at 9:37 AM, Nitin Mathur <nitinmathur@gmail.com> wrote:
>
> I am getting the following error and need help from someone
>
> Test environment
> CentOS 6.5
> Linux kernel: 3.8.8, 64 bit
> FIO version: fio-2.11
>
> I run the following command
>
>> ./fio --name=test_workld --ioengine=libaio --direct=1 --rw=randrw --norandommap --randrepeat=0 --rwmixread=40 --rwmixwrite=60 --iodepth=256 --size=100% --numjobs=4 --bssplit=512/4:64k/96 --random_distribution=zoned:50/5:50/95 --overwrite=1 --output=test_op --filename=/dev/nvme0n1 --group_reporting --runtime=1m --time_based
>
>
> This means, I'm using libaio, with a queue depth of 256, and fio is
> utilizing asynchronous IO engines. But when i run this command, it
> results into an error "Invalid argument". If i change the parameter
> --direct=0, I'm able to issue the command successfully.
>
> Can you help me to understand, why with direct=1, the fio command
> results in an error ?
>
> Thanks
> Nitin
> --
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next prev parent reply other threads:[~2016-05-30 16:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-30 15:34 fio error when using direct=1 Nitin Mathur
2016-05-30 16:18 ` Tim Walker [this message]
2016-05-30 16:36 ` Andrey Kuzmin
2016-05-30 16:52 ` Sitsofe Wheeler
2016-05-31 1:34 ` Nitin Mathur
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