[CASSANDRA-5530] Switch from THSHAServer to TThreadedSelectorServer

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Won't Fix
• Fix Version/s: 2.0 beta 1
• Labels: qa-resolved
• Assignee: T Jake Luciani
• Reporter: T Jake Luciani

Authors

T Jake Luciani

• Tester: Ryan McGuire
• Created: 01/May/13 01:14
• Updated: 16/Apr/19 09:32
• Resolved: 07/Jun/13 22:50

Description

TThreadedSelectorServer is new in Thrift 0.9. It builds on HSHA by allowing for a set of threads for IO and a set work request processing...

I've attached the performance numbers below. It's a lot closer to TThreadedServer.

ThreadedServer (Default)

Write Averages from the middle 80% of values:
interval_op_rate          : 14811
interval_key_rate         : 14811
latency median            : 1.7
latency 95th percentile   : 5.3
latency 99.9th percentile : 142.6
Total operation time      : 00:01:16
END

Read Averages from the middle 80% of values:
interval_op_rate          : 16898
interval_key_rate         : 16898
latency median            : 2.2
latency 95th percentile   : 8.5
latency 99.9th percentile : 165.7
Total operation time      : 00:01:05
END

HSHA (CURRENT)

Write Averages from the middle 80% of values:
interval_op_rate          : 8939
interval_key_rate         : 8939
latency median            : 5.0
latency 95th percentile   : 10.1
latency 99.9th percentile : 105.4
Total operation time      : 00:01:56
END

Read Averages from the middle 80% of values:
interval_op_rate          : 9608
interval_key_rate         : 9608
latency median            : 5.1
latency 95th percentile   : 7.7
latency 99.9th percentile : 51.6
Total operation time      : 00:01:49
END

TThreadedSelectorServer (NEW)

Write Averages from the middle 80% of values:
interval_op_rate          : 11640
interval_key_rate         : 11640
latency median            : 3.1
latency 95th percentile   : 10.6
latency 99.9th percentile : 135.9
Total operation time      : 00:01:30
END

Read Averages from the middle 80% of values:
interval_op_rate          : 15247
interval_key_rate         : 15247
latency median            : 2.8
latency 95th percentile   : 7.1
latency 99.9th percentile : 40.3
Total operation time      : 00:01:06
END

Issue Links

• is superceded by: CASSANDRA-5582 Replace CustomHsHaServer with better optimized solution based on LMAX Disruptor