On 2018-04-25 11:31:12 +0500, Andrey Borodin wrote: > > > > 24 апр. 2018 г., в 23:14, Andres Freund <and...@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.
These largely seem to be increasing the scope beyond reason... Greetings, Andres Freund
