Log Message: ----------- Use a latch to make startup process wake up and replay immediately when new WAL arrives via streaming replication. This reduces the latency, and also allows us to use a longer polling interval, which is good for energy efficiency. We still need to poll to check for the appearance of a trigger file, but the interval is now 5 seconds (instead of 100ms), like when waiting for a new WAL segment to appear in WAL archive. Modified Files: -------------- pgsql/src/backend/access/transam: xlog.c (r1.434 -> r1.435) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xlog.c?r1=1.434&r2=1.435) pgsql/src/backend/replication: walreceiver.c (r1.16 -> r1.17) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/replication/walreceiver.c?r1=1.16&r2=1.17) pgsql/src/include/access: xlog.h (r1.116 -> r1.117) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/access/xlog.h?r1=1.116&r2=1.117)
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