> 24 апр. 2018 г., в 23:14, Andres Freund <andres@anarazel.de> написал(а):
>
> On 2018-04-24 17:16:47 +0500, Andrey Borodin wrote:
>> But, I think that cost of development of real page eviction strategy
>> itself is neglectable small compared to infrastructure changes needed
>> by any non-CS5 strategy.
>
> What problems are you seeing? This isn't a lot of code?
1. Teaching BgWriter to used data from eviction strategy to aggressively flush data to disk (instead of ++next_to_clean
)
2. Implementing strategies as lock-free algorithms for freelist
These parts seem most important for benchmarking.
Also:
3. Converting all rings to single buffer manager where possible
4. Using O_DIRECT while writing data files
5. Using aio and scheduling of writes
These parts are not necessary, but most challenging, while not impossible though.
Best regards, Andrey Borodin.