On Thu, Sep 01, 2022 at 05:34:03PM -0700, Andres Freund wrote: > On 2022-09-01 13:11:50 -0700, Nathan Bossart wrote: >> On Wed, Aug 31, 2022 at 08:29:31AM -0700, Andres Freund wrote: >> > I also think it'll >> > make it harder to improve things in this area, which needs quite a bit of >> > work. >> >> If you have specific refactoring in mind that you think ought to be a >> prerequisite for this change, I'm happy to give it a try. > > There's a few semi-active threads (e.g. about not holding multiple buffer > partition locks). One important change is to split the way we acquire buffers > for file extensions - right now we get a victim buffer while holding the > relation extension lock, because there's simply no API to do otherwise. We > need to change that so we get acquire a victim buffer before holding the > extension lock (with the buffer pinned but not [tag] valid), then we need to > get the extension lock, insert it into its new position in the buffer mapping > table.
I see, thanks for clarifying. -- Nathan Bossart Amazon Web Services: https://aws.amazon.com
