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[ENHANCEMENT] TSDB: Log more statistics during startup (#13838)

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* log chunk snapshot and mmap chunks replay duration together with total replay duration

Signed-off-by: Ben Ye <benye@amazon.com>
This commit is contained in:
Ben Ye 2024-03-26 04:16:27 -07:00 committed by GitHub
parent 78c0fd2f4d
commit ceca6c4716
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GPG key ID: B5690EEEBB952194
1 changed files with 9 additions and 2 deletions
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11
tsdb/head.go
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@ -620,6 +620,7 @@ func (h *Head) Init(minValidTime int64) error {
refSeries := make(map[chunks.HeadSeriesRef]*memSeries)
snapshotLoaded := false
var chunkSnapshotLoadDuration time.Duration
if h.opts.EnableMemorySnapshotOnShutdown {
level.Info(h.logger).Log("msg", "Chunk snapshot is enabled, replaying from the snapshot")
// If there are any WAL files, there should be at least one WAL file with an index that is current or newer
@ -650,7 +651,8 @@ func (h *Head) Init(minValidTime int64) error {
snapIdx, snapOffset, refSeries, err = h.loadChunkSnapshot()
if err == nil {
snapshotLoaded = true
level.Info(h.logger).Log("msg", "Chunk snapshot loading time", "duration", time.Since(start).String())
chunkSnapshotLoadDuration = time.Since(start)
level.Info(h.logger).Log("msg", "Chunk snapshot loading time", "duration", chunkSnapshotLoadDuration.String())
}
if err != nil {
snapIdx, snapOffset = -1, 0
@ -672,6 +674,8 @@ func (h *Head) Init(minValidTime int64) error {
oooMmappedChunks map[chunks.HeadSeriesRef][]*mmappedChunk
lastMmapRef chunks.ChunkDiskMapperRef
err error
mmapChunkReplayDuration time.Duration
)
if snapshotLoaded || h.wal != nil {
// If snapshot was not loaded and if there is no WAL, then m-map chunks will be discarded
@ -695,7 +699,8 @@ func (h *Head) Init(minValidTime int64) error {
return err
}
}
level.Info(h.logger).Log("msg", "On-disk memory mappable chunks replay completed", "duration", time.Since(mmapChunkReplayStart).String())
mmapChunkReplayDuration = time.Since(mmapChunkReplayStart)
level.Info(h.logger).Log("msg", "On-disk memory mappable chunks replay completed", "duration", mmapChunkReplayDuration.String())
}
if h.wal == nil {
@ -817,6 +822,8 @@ func (h *Head) Init(minValidTime int64) error {
"checkpoint_replay_duration", checkpointReplayDuration.String(),
"wal_replay_duration", walReplayDuration.String(),
"wbl_replay_duration", wblReplayDuration.String(),
"chunk_snapshot_load_duration", chunkSnapshotLoadDuration.String(),
"mmap_chunk_replay_duration", mmapChunkReplayDuration.String(),
"total_replay_duration", totalReplayDuration.String(),
)