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  1. Cassandra
  2. CASSANDRA-15080

Paxos tables should use a 4KB chunk length

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    • Change Category:
      Performance
    • Complexity:
      Low Hanging Fruit

      Description

      In doing some research for a client on LWTs, I found that once we start pushing a node hard enough, with enough LWTs, decompressing the data in the paxos table takes up quite a bit of time. I've attached an SVG flame graph showing about 10% of time is spent in LZ4_decompress_fast in queries hitting the paxos table. We should be able to get a nice little performance bump from changing this to 4KB chunk length or disabling it completely.

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            • Assignee:
              rustyrazorblade Jon Haddad
              Reporter:
              rustyrazorblade Jon Haddad
              Authors:
              Jon Haddad
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              • Created:
                Updated: