Re: [PATCH] mm: add ratio in slabinfo print

[Xishi Qiu]

On 2016/1/12 8:20, David Rientjes wrote:

> On Mon, 11 Jan 2016, Xishi Qiu wrote:
> 
>>> On Mon 11-01-16 11:54:57, Xishi Qiu wrote:
>>>> Add ratio(active_objs/num_objs) in /proc/slabinfo, it is used to show
>>>> the availability factor in each slab.
>>>
>>> What is the reason to add such a new value when it can be trivially
>>> calculated from the userspace?
>>>
>>> Besides that such a change would break existing parsers no?
>>
>> Oh, maybe it is.
>>
> 
> If you need the information internally, you could always create a library 
> around slabinfo and export the information for users who are interested 
> for your own use.  Doing anything other than appending fields to each line 
> is too dangerous, however, as a general rule.
> 
> 

OK, I know.

Thanks,
Xishi Qiu