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Scan the buffer pool just once, not once per fork, during relation drop.

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This provides a speedup of about 4X when NBuffers is large enough.
There is also a useful reduction in sinval traffic, since we
only do CacheInvalidateSmgr() once not once per fork.

Simon Riggs, reviewed and somewhat revised by Tom Lane
This commit is contained in:
Tom Lane
2012-06-07 17:42:27 -04:00
parent 5baf6da717
commit ece01aae47
9 changed files with 150 additions and 23 deletions
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src/include/storage/buf_internals.h
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@@ -210,6 +210,7 @@ extern BufferDesc *LocalBufferAlloc(SMgrRelation smgr, ForkNumber forkNum,
extern void MarkLocalBufferDirty(Buffer buffer);
extern void DropRelFileNodeLocalBuffers(RelFileNode rnode, ForkNumber forkNum,
BlockNumber firstDelBlock);
extern void DropRelFileNodeAllLocalBuffers(RelFileNode rnode);
extern void AtEOXact_LocalBuffers(bool isCommit);
#endif /* BUFMGR_INTERNALS_H */