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| author | Fujii Masao <fujii@postgresql.org> | 2024-09-30 11:56:05 +0900 |
|---|---|---|
| committer | Fujii Masao <fujii@postgresql.org> | 2024-09-30 11:56:05 +0900 |
| commit | 559efce1d684069acf234a5cb032acba84e70938 (patch) | |
| tree | 81fe6e80393961f50c21a0ffb472acdfcfc5a096 /src/backend/access/transam/xlog.c | |
| parent | 20cfec896c6a20ca436f634b0ffa3582d7b9425c (diff) | |
| download | postgresql-559efce1d684069acf234a5cb032acba84e70938.tar.gz postgresql-559efce1d684069acf234a5cb032acba84e70938.zip | |
Add num_done counter to the pg_stat_checkpointer view.
Checkpoints can be skipped when the server is idle. The existing num_timed and
num_requested counters in pg_stat_checkpointer track both completed and
skipped checkpoints, but there was no way to count only the completed ones.
This commit introduces the num_done counter, which tracks only completed
checkpoints, making it easier to see how many were actually performed.
Bump catalog version.
Author: Anton A. Melnikov
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/9ea77f40-818d-4841-9dee-158ac8f6e690@oss.nttdata.com
Diffstat (limited to 'src/backend/access/transam/xlog.c')
| -rw-r--r-- | src/backend/access/transam/xlog.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index 853ab06812b..64304d77d37 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -6878,8 +6878,11 @@ update_checkpoint_display(int flags, bool restartpoint, bool reset) * In this case, we only insert an XLOG_CHECKPOINT_SHUTDOWN record, and it's * both the record marking the completion of the checkpoint and the location * from which WAL replay would begin if needed. + * + * Returns true if a new checkpoint was performed, or false if it was skipped + * because the system was idle. */ -void +bool CreateCheckPoint(int flags) { bool shutdown; @@ -6971,7 +6974,7 @@ CreateCheckPoint(int flags) END_CRIT_SECTION(); ereport(DEBUG1, (errmsg_internal("checkpoint skipped because system is idle"))); - return; + return false; } } @@ -7353,6 +7356,8 @@ CreateCheckPoint(int flags) CheckpointStats.ckpt_segs_added, CheckpointStats.ckpt_segs_removed, CheckpointStats.ckpt_segs_recycled); + + return true; } /* |