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authorQu Wenruo <wqu@suse.com>2018-09-27 14:42:29 +0800
committerDavid Sterba <dsterba@suse.com>2018-10-15 17:23:36 +0200
commitc337e7b02f71c4b2f6f2138807a284d2c4e1ac5e (patch)
tree136cbe7591e6c48aa1b61a6d470d68e1dcdbe0a1 /include/trace
parentfa6ac71524f206c33accfc12294fd35e17478fe0 (diff)
btrfs: qgroup: Introduce trace event to analyse the number of dirty extents accounted
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 analyze later balance performance improvement. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/btrfs.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index abe3ff774f58..8568946f491d 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -1576,6 +1576,27 @@ DEFINE_EVENT(btrfs_qgroup_extent, btrfs_qgroup_trace_extent,
TP_ARGS(fs_info, rec)
);
+TRACE_EVENT(qgroup_num_dirty_extents,
+
+ TP_PROTO(const struct btrfs_fs_info *fs_info, u64 transid,
+ u64 num_dirty_extents),
+
+ TP_ARGS(fs_info, transid, num_dirty_extents),
+
+ TP_STRUCT__entry_btrfs(
+ __field( u64, transid )
+ __field( u64, num_dirty_extents )
+ ),
+
+ TP_fast_assign_btrfs(fs_info,
+ __entry->transid = transid;
+ __entry->num_dirty_extents = num_dirty_extents;
+ ),
+
+ TP_printk_btrfs("transid=%llu num_dirty_extents=%llu",
+ __entry->transid, __entry->num_dirty_extents)
+);
+
TRACE_EVENT(btrfs_qgroup_account_extent,
TP_PROTO(const struct btrfs_fs_info *fs_info, u64 transid, u64 bytenr,