On Tue, Sep 21, 2021 at 09:06:35AM +1000, Dave Chinner wrote: > On Fri, Sep 17, 2021 at 06:30:10PM -0700, Darrick J. Wong wrote: > > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > > > Replace the statically-sized btree cursor zone with dynamically sized > > allocations so that we can reduce the memory overhead for per-AG bt > > cursors while handling very tall btrees for rt metadata. > > Hmmmmm. We do a *lot* of btree cursor allocation and freeing under > load. Keeping that in a single slab rather than using heap memory is > a good idea for stuff like this for many reasons... Or rather a few slabs for the different kind of cursors. But otherwise agreed.
