[rds-devel] comments on the send CQ completion handler

[Richard Frank]

If we are going to change this - let's run a test with out setting up 
completion notifications for the rdma ops - and measure interrupt / 
context switch rates / CPU util with and with out them.

I believe I did this in some past life - and it shows significant 
reductions if we do not generate the extra completions. Who knows - 
perhaps they are not needed at all - or maybe things have changed and 
they are now !

Olaf Kirch wrote:
> On Thursday 10 January 2008 12:33, Or Gerlitz wrote:
>   
>> - IB_SEND_SOLICITED is useless for rdma work requests as there is no 
>> matching receive in the other side
>>
>> - max_unsig_bytes accounting need not be done for the rdma bytes since 
>> its pages that came from the user and not allocated by rds
>>
>> Both are cleanups that improve the code's clarity, If you agree to 
>> either/both - I will send a patch early next week
>>     
>
> Yes, please do that. Cleanups always welcome :-)
>
> Thanks,
> Olaf
>