Rick Branson created CASSANDRA-7594:
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Summary: Disruptor Thrift server worker thread pool not adjustable
Key: CASSANDRA-7594
URL: https://issues.apache.org/jira/browse/CASSANDRA-7594
Project: Cassandra
Issue Type: Bug
Reporter: Rick Branson
For the THsHaDisruptorServer, there may not be enough threads to run blocking
StorageProxy methods. The current number of worker threads is hardcoded at 2
per selector, so 2 * numAvailableProcessors(), or 64 threads on a 16-core
hyperthreaded machine. StorageProxy methods block these threads, so this puts
an upper bound on the throughput if hsha is enabled. If operations take 10ms on
average, the node can only handle a maximum of 6,400 operations per second.
This is a regression from hsha on 1.2.x, where the thread pool was tunable
using rpc_min_threads and rpc_max_threads.
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