On Wed, Sep 05, 2018 at 01:03:39PM +0800, Qu Wenruo wrote: > Tree reloc tree doesn't contribute to qgroup numbers, as we have I think you can call it just 'reloc tree', I'm fixing that in all changelogs and comments anyway. > accounted them at balance time (check replace_path()). > > Skip such unneeded subtree trace should reduce some performance > overhead. Please provide some numbers or description of the improvement. There are several performance problems caused by qgroups so it would be good to get a better idea how much this patch is going to help. Thanks.
