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Jason Brown commented on CASSANDRA-7045: ---------------------------------------- I started an investigation into something like the quasar project (http://docs.paralleluniverse.co/quasar/), where you are doing something like like golang's goroutines / erlang's process. Basically, lightweight event processing not occupying a full thread. While I thought bringing in the whole quasar project was more than what we would want, I thought the basic ideas (scheduler + lightweight routines) would be a great thing to look at. > Investigate changes to threading model for network consumers to improve > performance for small messages > ------------------------------------------------------------------------------------------------------ > > Key: CASSANDRA-7045 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7045 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Benedict > Assignee: Benedict > Labels: performance > > See CASSANDRA-7029 for original discussion. > We can (maybe) optimise the threading model for network consumers: since we > generally process very small messages (200 bytes not at all implausible), the > thread signalling costs on the processing thread can actually dramatically > impede throughput. In general it costs ~10micros to signal (and passing the > message to another thread for processing in the current model requires > signalling). For 200-byte messages this caps our throughput at 20MB/s. -- This message was sent by Atlassian JIRA (v6.2#6252)