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  1. Cassandra
  2. CASSANDRA-4264

live ratio limit 64.0 is way too low

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Details

    • Improvement
    • Status: Resolved
    • Low
    • Resolution: Fixed
    • 1.1.1
    • None
    • None
    • FreeBSD 8 - 64 bit

    Description

      Currently live ratio is limited to 64.0. This is way too low.

      WARN [MemoryMeter:1] Memtable.java (line 181) setting live ratio to maximum of 64 instead of xxxx

      values seen in log are ofter larger than 64.0 limit. I propose to use 100.0 as new limit.

      ponto:(admin)log/cassandra>grep "to maximum of 64" system.log.1
      WARN [MemoryMeter:1] 2012-02-03 00:00:19,444 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 64.9096047648211
      WARN [MemoryMeter:1] 2012-02-08 00:00:17,379 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 68.81016452376322
      WARN [MemoryMeter:1] 2012-02-08 00:00:32,358 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 88.49747308025415
      WARN [MemoryMeter:1] 2012-02-09 00:00:08,448 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 76.2444888765154
      WARN [MemoryMeter:1] 2012-02-10 18:18:52,677 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 142.22477982642255
      WARN [MemoryMeter:1] 2012-02-20 00:00:53,753 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 88.19832386767173
      WARN [MemoryMeter:1] 2012-03-02 10:41:00,232 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 419.9607495592804
      WARN [MemoryMeter:1] 2012-03-07 14:13:15,141 Memtable.java (line 181) setting live ratio to maximum of 64 instead of Infinity
      WARN [MemoryMeter:1] 2012-03-08 00:01:12,766 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 94.20215772717702
      WARN [MemoryMeter:1] 2012-03-09 00:00:38,633 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 98.54003447121715
      WARN [MemoryMeter:1] 2012-03-11 00:00:13,243 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 193.14262214179965
      WARN [MemoryMeter:1] 2012-03-14 00:00:26,709 Memtable.java (line 181) setting live ratio to maximum of 64 instead of 103.88360138951437

      Attachments

        1. 4264.txt
          1 kB
          Jonathan Ellis
        2. 4264-v2.txt
          2 kB
          Sylvain Lebresne
        3. patch-liveratio.txt
          0.8 kB
          Radim Kolar

        Activity

          People

            slebresne Sylvain Lebresne
            hsn Radim Kolar
            Sylvain Lebresne
            Jonathan Ellis
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            Dates

              Created:
              Updated:
              Resolved: