On Tue, Sep 11, 2018 at 01:38:12PM +0800, Qu Wenruo wrote: > Number of qgroup dirty extents is directly linked to the performance > overhead, so add a new trace event, trace_qgroup_num_dirty_extents(), to > record how many dirty extents is processed in > btrfs_qgroup_account_extents(). > > This will be pretty handy to analyse later balance performance > improvement. > > Signed-off-by: Qu Wenruo <wqu@xxxxxxxx> Reviewed-by: David Sterba <dsterba@xxxxxxxx>
