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authorSimon Riggs <simon@2ndQuadrant.com>2012-06-07 19:22:47 +0100
committerSimon Riggs <simon@2ndQuadrant.com>2012-06-07 19:22:47 +0100
commit2c8a4e9be2730342cbca85150a2a9d876aa77ff6 (patch)
treed4431bf22e39c7c2a145cb2ce838f2cad6e0d3f8 /src/backend/access/gist
parentb50991eedb458a81d875d049f48fb62ab1685c0d (diff)
downloadpostgresql-2c8a4e9be2730342cbca85150a2a9d876aa77ff6.tar.gz
postgresql-2c8a4e9be2730342cbca85150a2a9d876aa77ff6.zip
Wake WALSender to reduce data loss at failover for async commit.
WALSender now woken up after each background flush by WALwriter, avoiding multi-second replication delay for an all-async commit workload. Replication delay reduced from 7s with default settings to 200ms and often much less, allowing significantly reduced data loss at failover. Andres Freund and Simon Riggs
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