On 2018-Aug-22, Andres Freund wrote: > On 2018-08-22 11:06:17 -0300, Alvaro Herrera wrote:
> > I suppose that the use case that was initially proposed (ZFS) has not > > yet been tested so we shouldn't reject this patch immediately, but > > perhaps what Joyent people should be doing now is running Tomas' test > > script on ZFS and see what the results look like. > > IDK, I would see it less negatively. Yes, we should put a BIG FAT > warning to never use this on non COW filesystems. And IMO ZFS (and also > btrfs) sucks badly here, even though they really shouldn't. But given > the positive impact for zfs & btrfs, and the low code complexity, I > think it's not insane to provide this tunable. Yeah, but let's see some ZFS numbers first :-) -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
