Hi, On 2018-07-10 14:15:30 -0600, Jerry Jelinek wrote: > Thanks to everyone who took the time to look at the patch and send me > feedback. I'm happy to work on improving the documentation of this new > tunable to clarify when it should be used and the implications. I'm trying > to understand more specifically what else needs to be done next. To > summarize, I think the following general concerns were brought up. > > 1) Disabling WAL recycling could have a negative performance impact on a > COW filesystem if all WAL files could be kept in the filesystem cache.
> For #1, #2 and #3, I don't understand these concerns. It would be helpful > if these could be more specific We perform more writes (new files are zeroed, which needs to be fsynced), and increase metadata traffic (creation of files), when not recycling. Regards, Andres
