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Tuning Process Flow

  1. Modify the dirty page refresh parameter (change the value of dirty_background_ratio from 10 to 5 and the value of dirty_expire_centisecs from 3000 to 2000) to increase the background refresh frequency of dirty pages, increasing the import rate.
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    echo 5 > /proc/sys/vm/dirty_background_ratio
echo 2000 > /proc/sys/vm/dirty_expire_centisecs

    or

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    sysctl -w vm.dirty_background_ratio = 5
sysctl -w vm.dirty_expire_centisecs=2000
  2. Create RAID 5, so that the drive I/O is not the bottleneck of data import and search. Therefore, the multi-thread feature of the service model is fully utilized on the Kunpeng servers.
Parent topic: Introduction