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Commitb6e3673

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Make GIN's cleanup pending list process interruptable
Cleanup process could be called by ordinary insert/update and could take a lotof time. Add vacuum_delay_point() to make this process interruptable. Undervacuum 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>
1 parent1e03094 commitb6e3673

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-5
lines changed

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+3
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‎src/backend/access/gin/ginfast.c

Lines changed: 3 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -794,8 +794,7 @@ ginInsertCleanup(GinState *ginstate,
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*/
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processPendingPage(&accum,&datums,page,FirstOffsetNumber);
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797-
if (vac_delay)
798-
vacuum_delay_point();
797+
vacuum_delay_point();
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800799
/*
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* Is it time to flush memory to disk?Flush if we are at the end of
@@ -835,8 +834,7 @@ ginInsertCleanup(GinState *ginstate,
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{
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ginEntryInsert(ginstate,attnum,key,category,
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list,nlist,NULL);
838-
if (vac_delay)
839-
vacuum_delay_point();
837+
vacuum_delay_point();
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}
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/*
@@ -916,7 +914,7 @@ ginInsertCleanup(GinState *ginstate,
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/*
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* Read next page in pending list
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*/
919-
CHECK_FOR_INTERRUPTS();
917+
vacuum_delay_point();
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buffer=ReadBuffer(index,blkno);
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LockBuffer(buffer,GIN_SHARE);
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page=BufferGetPage(buffer);

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