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  1. MariaDB Server
  2. MDEV-11296

InnoDB stalls under OLTP RW on P8

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      Description

      Running 10 threads slightly modified OLTP RW on Power8 hangs:

      sysbench 1.0:  multi-threaded system evaluation benchmark
       
      Running the test with following options:
      Number of threads: 10
      Report intermediate results every 10 second(s)
      Initializing random number generator from seed (42).
       
       
      Initializing worker threads...
       
      Threads started!
       
      [  10s] threads: 10, tps: 1514.48, reads: 7665.91, writes: 54882.19, response time: 12.08ms (95%), errors: 17.70, reconnects:  0.00
      [  20s] threads: 10, tps: 1595.89, reads: 8061.07, writes: 57769.51, response time: 11.35ms (95%), errors: 16.40, reconnects:  0.00
      [  30s] threads: 10, tps: 1623.60, reads: 8194.80, writes: 58757.63, response time: 11.28ms (95%), errors: 15.30, reconnects:  0.00
      [  40s] threads: 10, tps: 1612.90, reads: 8150.98, writes: 58388.66, response time: 11.23ms (95%), errors: 17.30, reconnects:  0.00
      [  50s] threads: 10, tps: 1630.11, reads: 8225.34, writes: 58968.35, response time: 11.13ms (95%), errors: 15.10, reconnects:  0.00
      [  60s] threads: 10, tps: 1618.00, reads: 8182.58, writes: 58589.23, response time: 11.28ms (95%), errors: 18.50, reconnects:  0.00
      [  80s] threads: 10, tps: 1433.49, reads: 7240.15, writes: 51899.38, response time: 11.13ms (95%), errors: 14.40, reconnects:  0.00
      [  90s] threads: 10, tps: 1620.61, reads: 8171.75, writes: 58636.19, response time: 11.13ms (95%), errors: 13.70, reconnects:  0.00
      [ 100s] threads: 10, tps: 1309.59, reads: 6610.07, writes: 47377.28, response time: 11.13ms (95%), errors: 12.60, reconnects:  0.00
      [ 110s] threads: 10, tps: 1370.81, reads: 6926.83, writes: 49623.40, response time: 11.11ms (95%), errors: 14.60, reconnects:  0.00
      [ 120s] threads: 10, tps: 1634.79, reads: 8248.27, writes: 59145.77, response time: 10.98ms (95%), errors: 14.70, reconnects:  0.00
      [ 130s] threads: 10, tps: 1628.70, reads: 8224.02, writes: 58949.45, response time: 11.13ms (95%), errors: 16.20, reconnects:  0.00
      [ 140s] threads: 10, tps: 1636.70, reads: 8266.78, writes: 59239.05, response time: 10.98ms (95%), errors: 16.50, reconnects:  0.00
      [ 150s] threads: 10, tps: 1637.31, reads: 8270.93, writes: 59281.33, response time: 11.03ms (95%), errors: 16.90, reconnects:  0.00
      [ 160s] threads: 10, tps: 1631.79, reads: 8239.67, writes: 59051.96, response time: 11.13ms (95%), errors: 16.30, reconnects:  0.00
      [ 170s] threads: 10, tps: 1629.71, reads: 8231.64, writes: 58985.49, response time: 11.09ms (95%), errors: 16.50, reconnects:  0.00
      [ 180s] threads: 10, tps: 1641.50, reads: 8285.48, writes: 59382.38, response time: 11.09ms (95%), errors: 15.60, reconnects:  0.00
      [ 190s] threads: 10, tps: 1629.10, reads: 8234.81, writes: 58995.58, response time: 11.15ms (95%), errors: 17.90, reconnects:  0.00
      [ 200s] threads: 10, tps: 1628.10, reads: 8213.18, writes: 58892.87, response time: 11.17ms (95%), errors: 14.60, reconnects:  0.00
      [ 210s] threads: 10, tps: 1637.01, reads: 8263.33, writes: 59227.40, response time: 11.03ms (95%), errors: 15.60, reconnects:  0.00
      [ 220s] threads: 10, tps: 1610.09, reads: 8132.07, writes: 58272.12, response time: 11.05ms (95%), errors: 16.50, reconnects:  0.00
      [ 230s] threads: 10, tps: 1492.80, reads: 7534.02, writes: 54017.07, response time: 11.07ms (95%), errors: 14.10, reconnects:  0.00
      [ 240s] threads: 10, tps: 1628.69, reads: 8220.87, writes: 58926.31, response time: 11.12ms (95%), errors: 15.30, reconnects:  0.00
      [ 250s] threads: 10, tps: 1632.60, reads: 8253.01, writes: 59127.11, response time: 11.14ms (95%), errors: 17.90, reconnects:  0.00
      [ 260s] threads: 10, tps: 1639.50, reads: 8268.29, writes: 59305.79, response time: 10.98ms (95%), errors: 14.10, reconnects:  0.00
      [ 270s] threads: 10, tps: 1617.61, reads: 8171.73, writes: 58562.89, response time: 11.19ms (95%), errors: 16.70, reconnects:  0.00
      [ 280s] threads: 10, tps: 1628.29, reads: 8238.47, writes: 58998.69, response time: 11.12ms (95%), errors: 19.60, reconnects:  0.00
      [ 290s] threads: 10, tps: 306.50, reads: 1543.90, writes: 11068.33, response time: 11.03ms (95%), errors: 2.50, reconnects:  0.00
      [ 300s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 310s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 320s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 330s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 340s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 350s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 360s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 370s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 380s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 390s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 400s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 410s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 420s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 430s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 440s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 450s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 460s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 470s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 480s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 490s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 500s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 510s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 520s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 530s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 540s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 550s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      [ 560s] threads: 10, tps: 0.00, reads: 0.00, writes: 0.00, response time: 0.00ms (95%), errors: 0.00, reconnects:  0.00
      

      Attached please see error log with monitor dump, gdb traces and script that was used to run sysbench and mysqld.

        Attachments

        1. run.mysqld.p8
          4 kB
        2. mysqld10.txt
          88 kB
        3. mysqld10.err
          53 kB

          Activity

            People

            Assignee:
            svoj Sergey Vojtovich
            Reporter:
            svoj Sergey Vojtovich
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              Dates

              Created:
              Updated:
              Resolved:

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