Re: ioengine=sync issue on Windows

[Jens Axboe <axboe@kernel.dk>]

On 03/12/2014 09:41 AM, S�bastien Bouchex Bellomi� wrote:
> Hi,
>
> The "sync" engine does not seem to work correctly on Windows :
>
> My profile is :
>
> [global]
> thread
> ioengine=sync
>
> [random_read]
> rw=randread
> size=1024m
> directory=read
> bs=32k
>
> fio 2.1.6.1 output contains " err= 5 (file:backend.c:768, func=full resid, error=Input/output error)"
>
> [...]
> C:\Program Files\fio>fio.exe H:\fio\fio.win
> random_read: (g=0): rw=randread, bs=32K-32K/32K-32K/32K-32K, ioengine=sync, iodepth=1
> fio-2.1.6-1-gd004a
> Starting 1 thread
> fio: pid=5144, err=5/file:backend.c:768, func=full resid, error=Input/output error
>
> random_read: (groupid=0, jobs=1): err= 5 (file:backend.c:768, func=full resid, error=Input/output error): pid=5144: Wed Mar 12 16:36:45 2014
>    cpu          : usr=0.00%, sys=0.00%, ctx=0, majf=0, minf=0
>    IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
>       submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
>       complete  : 0=50.0%, 4=50.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
>       issued    : total=r=2/w=0/d=0, short=r=1/w=0/d=0
>       latency   : target=0, window=0, percentile=100.00%, depth=1
>
> Run status group 0 (all jobs):
> [...]

Bruce, do you know why that is?

-- 
Jens Axboe