Re:

[Jens Axboe <axboe@kernel.dk>]

On 10/26/18 6:54 AM, Mohanraj B wrote:
> Hello,
> 
> I am trying to check how option --clocksource works.
> 
> 
> bash# fio --name job1 --size 10m --clocksource 2
>         valid values: gettimeofday Use gettimeofday(2) for timing
>                     : clock_gettime Use clock_gettime(2) for timing
>                     : cpu        Use CPU private clock
> 
> fio: failed parsing clocksource=2
> 
> bash# fio --name job1 --size 10m --clocksource gettimeofday(2)
> bash: syntax error near unexpected token `('
> 
> Below command works fine.
> bash# fio --name job1 --size 10m --clocksource gettimeofday
> 
> It runs without error but quiet not sure how to see the effect of this
> option. also tried other options - clock_gettime, cpu gettimeofday and
> dont see any difference.
> 
> Also is there any error in documentation passing gettimeofday(2)
> throws parse error.

The format is 'value' 'help', so you'd want to do:

--clocksource=gettimeofday

for instance.

-- 
Jens Axboe