Re: Applying nice/ionice to nilfs-cleanerd

[Gordan Bobic <gordan-UpbECiGlrmGsTnJN9+BGXg@public.gmane.org>]

On 08/08/2011 12:23 AM, Ryusuke Konishi wrote:
>>
>>   Is there a way to set default nice/ionice levels for nilfs-cleanerd?
>
> At present, you have to manually invoke the cleanerd through the
> nice/ionice commands or to run renice/ionice later specifying the
> process ID of the cleanerd.
>
> One way to make this convenient is introducing new directives in
> /etc/nilfs_cleanerd.conf as follows:
>
>   # Scheduling priority.
>   nice 19    # niceness -20~19
>
>   # IO scheduling class.
>   # Supported classes are default, idle, best-effort, and realtime.
>   ionice_class  idle
>
>   # IO scheduling priority.
>   # 0-7 is valid for best-effort and realtime classes.
>   ionice_data   5
>
> Do you think these extensions make sense ?

Yes, I think those would be really handy. It would also mean that the 
cleanerd could be scheduled to run more aggressively but at lower 
priority, so the clean-up would be potentially more up to date while 
having less impact on the system performance.

Gordan
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