On 2014-09-30 03:17, Andrey Kuzmin wrote:
On Tue, Sep 30, 2014 at 1:14 PM, Jon Tango <cheerios123@xxxxxxxxxxx> wrote:
The same thing could be done by partitioning the SSD in the operating system with the desired partition size, and then running a time-based fio job against the partition.
Basically, fio options offset/size should yield the same net result, but I'm always unsure on what is the actual effect of mixing size and time_based in a single job, and whether fio will wrap around the specified size to the specified offset if the job is time-based. HOWTO could have used some clarification on size/time_based interaction.
Regards,
Andrey
On Sep 30, 2014 11:41 AM, "Sitsofe Wheeler" <sitsofe@xxxxxxxxx> wrote:
On 30 September 2014 07:34, Jon Tango <cheerios123@xxxxxxxxxxx> wrote:
The taskfile is this:
I should have been more specific - you need to show both the _vdbench_
parameter file that you are comparing to in addition to showing your
fio job file.
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I'm really wanting to avoid the filesystem, they create so much interference. I am focusing on just testing the raw device :)
I'm not sure why a filesystem should be involved in partitioning, that
happens at the raw device level.
I think there's some limitation in Windows that doesn't allow partition
raw IO. I may be mistaken.
But I agree, partition would work. But just limiting the LBA range with
size= will do the same job.
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Jens Axboe
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