[dpdk-dev] mempool deleting and cache_size

Marc Sune marc.sune at bisdn.de
Fri Apr 17 10:32:48 CEST 2015



On 16/04/15 11:26, Gonzalez Monroy, Sergio wrote:
> On 16/04/2015 10:22, Marc Sune wrote:
>>
>>
>> On 16/04/15 11:03, Gonzalez Monroy, Sergio wrote:
>>> On 15/04/2015 20:24, Stephen Hemminger wrote:
>>>> On Wed, 15 Apr 2015 20:15:18 +0100
>>>> Zoltan Kiss <zoltan.kiss at linaro.org> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I have two questions regarding mempools:
>>>>>
>>>>> - the first is trivial: how do you delete them? Can you? I can't 
>>>>> see a
>>>>> function to do that, and none of the examples are doing such 
>>>>> thing. When
>>>>> exactly it get deleted?
>>>> You can't delete them. They live in hugepage area and are persistent.
>>>> Correctly written code looks for them by name and reuses existing pool
>>>> if it is big enough.
>>>>
>>> FYI, I'm looking into such functionality and also delete/destroy 
>>> mempools (although still no plan on implementation).
>>>
>>
>> Also the memzones behind, or will be "lost/leaked" after a mempool 
>> destruction?
>>
>> Marc
>>
>>> Sergio
>>
> Sorry, my bad.
> I did mean to say 'delete/destroy memzones' :)

Good,

That would make the KNI memzone pool not necessary anymore:

http://article.gmane.org/gmane.comp.networking.dpdk.devel/6890/

If your patch gets accepted I will adapt that.

Marc

>
> Sergio



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