CPU usage

Watch

• single node src+dest: 100%
• separate src & dest: each is ~80%
• flamegraph torch.svg.zip

Analysis

• gob encode/decode takes CPU time
• siddontang/go-mysql read packet -> Read
  • No new binlog data is being generated. Is it some polling?
  • DONE: re-watch the process and generate flamegraph (with SkipIncrementalCopy: true).
    • recorded in incremental process

Plan

• replace gob with avro || ?
  • gob is 'self-describing', which is not necessary for our pre-defined structures.

TODO: re-watch the process and generate flamegraph (with SkipIncrementalCopy: true). @leixia2018

Another point: consider in-place snappy (de)compressing, instead of creating new slice.

CPU usage after switching to gencode

Remaining point

• EscapeValue
• snappy

TODO compare performance before / after 'incr-gencode' change.