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Tune GetSnapshotData() during Hot Standby by avoiding loop

author Simon Riggs <simon@2ndQuadrant.com>

2010年4月18日 18:06:07 +0000 (18:06 +0000)

committer Simon Riggs <simon@2ndQuadrant.com>

2010年4月18日 18:06:07 +0000 (18:06 +0000)

commit 21d6a6a12850724b53ebc240080a90597b3b2580

tree 8ed28c08925832d6219b86c9a5f40f6bad3e7ffb tree

parent 7b130fbc503a1bfabf58c0c67cf8461e33fcc680 commit | diff

Tune GetSnapshotData() during Hot Standby by avoiding loop
through normal backends. Makes code clearer also, since we
avoid various Assert()s. Performance of snapshots taken
during recovery no longer depends upon number of read-only
backends.

src/backend/access/transam/xlog.c diff | blob | blame | history

src/backend/storage/ipc/procarray.c diff | blob | blame | history

src/include/access/xlog.h diff | blob | blame | history

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