Re: [dpdk-dev] [PATCH] eal: add asynchronous request API to DPDK IPC

["Burakov, Anatoly" <anatoly.burakov@intel.com>]

On 02-Mar-18 6:51 PM, Stephen Hemminger wrote:
> On Tue, 27 Feb 2018 14:59:29 +0000
> Anatoly Burakov <anatoly.burakov@intel.com> wrote:
> 
>> This API is similar to the blocking API that is already present,
>> but reply will be received in a separate callback by the caller.
>>
>> Under the hood, we create a separate thread to deal with replies to
>> asynchronous requests, that will just wait to be notified by the
>> main thread, or woken up on a timer (it'll wake itself up every
>> minute regardless of whether it was called, but if there are no
>> requests in the queue, nothing will be done and it'll go to sleep
>> for another minute).
>>
>> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> 
> The problem with this callback model is it makes it possible to
> have a single wait for multiple events model (like epoll) which
> is the most scaleable way to write applications.
> 
> 

I assume there's a typo in there somewhere, because the way it's written 
makes it look like an advantage, not a problem :) Some more details on 
what exactly is the issue would be welcome though.

-- 
Thanks,
Anatoly