diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-04-17 11:26:37 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-04-17 11:26:37 -0400 |
| commit | eef1a609adfd0c41361aac2e04020bd199fb61fb (patch) | |
| tree | ecd484009c5462c9f422b477072925305c908cab | |
| parent | 608d1f97114d3e449beef543c9a528a1ee2f5ada (diff) | |
Add more temporary debug logging, in 9.4 branch only.
Last night's results were inconclusive, but after more staring at the
code I've thought of some more data to gather.
Discussion: https://postgr.es/m/6744.1523833660@sss.pgh.pa.us
| -rw-r--r-- | src/backend/commands/indexcmds.c | 2 | ||||
| -rw-r--r-- | src/backend/utils/time/snapmgr.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c index e8b9d1a4dd8..f3b9ef27d2b 100644 --- a/src/backend/commands/indexcmds.c +++ b/src/backend/commands/indexcmds.c @@ -773,6 +773,8 @@ DefineIndex(Oid relationId, PopActiveSnapshot(); PrintSnapMgrStatus("concurrent index build, after PopActiveSnapshot"); + elog(LOG, "concurrent index build: releasing snap %p with regd_count %d, active_count %d", + snapshot, snapshot->regd_count, snapshot->active_count); UnregisterSnapshot(snapshot); PrintSnapMgrStatus("concurrent index build, after UnregisterSnapshot"); InvalidateCatalogSnapshot(); diff --git a/src/backend/utils/time/snapmgr.c b/src/backend/utils/time/snapmgr.c index 2a3d915e1f9..dbb3544af7b 100644 --- a/src/backend/utils/time/snapmgr.c +++ b/src/backend/utils/time/snapmgr.c @@ -1411,7 +1411,7 @@ PrintSnapMgrStatus(const char *context) for (active = ActiveSnapshot; active != NULL; active = active->as_next) asdepth++; - elog(LOG, "%s: %d reg snaps, %d active snaps, cat snap %p, xmin %u", + elog(LOG, "%s: %d reg snaps, %d active snaps, first snap %p, cat snap %p, xmin %u", context, RegisteredSnapshots, asdepth, - CatalogSnapshot, MyPgXact->xmin); + FirstXactSnapshot, CatalogSnapshot, MyPgXact->xmin); } |