Re: [PATCH] nvmet: make nvmet_wq visible in sysfs

[Guixin Liu <kanie@linux.alibaba.com>]

在 2024/10/30 03:52, Chaitanya Kulkarni 写道:
> On 10/28/24 23:46, Guixin Liu wrote:
>> 在 2024/10/29 13:04, Chaitanya Kulkarni 写道:
>>> On 10/28/24 18:49, Guixin Liu wrote:
>>>> Make nvmet_wq visible in sysfs, allowing for tuning the it's attr
>>>> through sysfs.
>>>>
>>>> Signed-off-by: Guixin Liu<kanie@linux.alibaba.com>
>>>> ---
>>> do you happened have a usecase for this?
>>>
>>> -ck
>> Sometimes, in order to respond promptly to certain events or
>>
>> manage commands, we need to reserve resources and partition
>>
>> the CPU cores. For example, if there are 4 cores available,
>>
>> we can initially allocate them by dedicating one core for
>>
>> management while the remaining 3 cores are specifically for handling IO.
>>
>> Best Regards,
>>
>> Guixin Liu
>>
> I'm aware of exposing tunables through sysfs and it's benefits, my question
> was do you have a setup where this setting is needed currently ?
>
> I've always been asked to for the usecase on a patch when we expose
> something
> out of kernel that is solving the problem in the deployment ...
>
> -ck

I need serverve some cpu core to do other things, such as handle events

and managements, so that the nvmet_wq can't running on all cpu cores,

currently, I restrict it by setting the cpumask of nvmet_wq（that's why

I expose nvmet_wq to sysfs）.

Best Regards,

Guixin Liu

>