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-rw-r--r--src/backend/storage/buffer/bufmgr.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index 8075828e8a6..800a4248c95 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -1017,6 +1017,8 @@ ReadBuffer_common(SMgrRelation smgr, char relpersistence, ForkNumber forkNum,
if (track_io_timing)
INSTR_TIME_SET_CURRENT(io_start);
+ else
+ INSTR_TIME_SET_ZERO(io_start);
smgrread(smgr, forkNum, blockNum, (char *) bufBlock);
@@ -2902,6 +2904,8 @@ FlushBuffer(BufferDesc *buf, SMgrRelation reln)
if (track_io_timing)
INSTR_TIME_SET_CURRENT(io_start);
+ else
+ INSTR_TIME_SET_ZERO(io_start);
/*
* bufToWrite is either the shared buffer or a copy, as appropriate.