Calculate # of semaphores correctly with --disable-spinlocks.
The old formula didn't take into account that each WAL sender process needs
a spinlock. We had also already exceeded the fixed number of spinlocks
reserved for misc purposes (10). Bump that to 30.
Backpatch to 9.0, where WAL senders were introduced. If I counted correctly,
9.0 had exactly 10 predefined spinlocks, and 9.1 exceeded that, but bump the
limit in 9.0 too because 10 is uncomfortably close to the edge.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/b8ed4cc9627de437e5eafdb81631a0d0f063abb3
Modified Files
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src/backend/storage/lmgr/spin.c | 14 +++++++++++---
1 files changed, 11 insertions(+), 3 deletions(-)
