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Count write times when extending relation files for shared buffers

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Relation files extended by multiple blocks at a time have been counting
the number of blocks written, but forgot to increment the write time in
this case, as single-block write and relation extension are treated as
two different I/O operations in the shared stats: IOOP_EXTEND vs
IOOP_WRITE.  In this case IOOP_EXTEND was forgotten for normal
(non-temporary) relations, still the number of blocks written was
incremented according to the relation extend done.

Write times are tracked when track_io_timing is enabled, which is not
the case by default.

Author: Nazir Bilal Yavuz
Reviewed-by: Robert Haas, Melanie Plageman
Discussion: https://postgr.es/m/CAN55FZ19Ss279mZuqGbuUNxka0iPbLgYuOQXqAKewrjNrp27VA@mail.gmail.com
Backpatch-through: 16
This commit is contained in:
Michael Paquier 2023-10-18 14:54:33 +09:00
parent 173b56f1ef
commit d17ffc734d
1 changed files with 1 additions and 1 deletions
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2
src/backend/utils/activity/pgstat_io.c
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@ -119,7 +119,7 @@ pgstat_count_io_op_time(IOObject io_object, IOContext io_context, IOOp io_op,
INSTR_TIME_SET_CURRENT(io_time);
INSTR_TIME_SUBTRACT(io_time, start_time);
if (io_op == IOOP_WRITE)
if (io_op == IOOP_WRITE || io_op == IOOP_EXTEND)
{
pgstat_count_buffer_write_time(INSTR_TIME_GET_MICROSEC(io_time));
if (io_object == IOOBJECT_RELATION)