Re: [HACKERS] LWLock optimization for multicore Power machines

On 2017-08-30 16:24, Tom Lane wrote:
> Alexander Korotkov <a.korotkov@postgrespro.ru> writes:
>> It doesn't seems to make sense to consider this patch unless we get 
>> access
>> to suitable Power machine to reproduce benefits.
>> This is why I'm going to mark this patch "Returned with feedback".
>> Once we would get access to the appropriate machine, I will resubmit 
>> this
>> patch.
> 
> What about hydra (that 60-core POWER7 machine we have community
> access to)?
> 
>             regards, tom lane

Anyway, I encourage to consider first another LWLock patch:
https://commitfest.postgresql.org/14/1166/
It positively affects performance on any platform (I've tested it
on Power as well).

And I have prototype of further adaptation of that patch for POWER
platform (ie using inline assembly) (not published yet).

-- 
Sokolov Yura
Postgres Professional: https://postgrespro.ru
The Russian Postgres Company