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Make GIN's cleanup pending list process interruptable

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Cleanup process could be called by ordinary insert/update and could take a lot
of time. Add vacuum_delay_point() to make this process interruptable. Under
vacuum this call will also throttle a vacuum process to decrease system load,
called from insert/update it will not throttle, and that reduces a latency.

Backpatch for all supported branches.

Jeff Janes <jeff.janes@gmail.com>
This commit is contained in:
Teodor Sigaev
2015-09-07 17:18:26 +03:00
parent a196e50534
commit 3ffbc49941
1 changed files with 3 additions and 5 deletions
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4
src/backend/access/gin/ginfast.c
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@ -799,7 +799,6 @@ ginInsertCleanup(GinState *ginstate,
*/ */
processPendingPage(&accum, &datums, page, FirstOffsetNumber); processPendingPage(&accum, &datums, page, FirstOffsetNumber);
if (vac_delay)
vacuum_delay_point(); vacuum_delay_point();
/* /*
@ -840,7 +839,6 @@ ginInsertCleanup(GinState *ginstate,
{ {
ginEntryInsert(ginstate, attnum, key, category, ginEntryInsert(ginstate, attnum, key, category,
list, nlist, NULL); list, nlist, NULL);
if (vac_delay)
vacuum_delay_point(); vacuum_delay_point();
} }
@ -921,7 +919,7 @@ ginInsertCleanup(GinState *ginstate,
/* /*
* Read next page in pending list * Read next page in pending list
*/ */
CHECK_FOR_INTERRUPTS(); vacuum_delay_point();
buffer = ReadBuffer(index, blkno); buffer = ReadBuffer(index, blkno);
LockBuffer(buffer, GIN_SHARE); LockBuffer(buffer, GIN_SHARE);
page = BufferGetPage(buffer); page = BufferGetPage(buffer);