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Knowledgebase: MarkLogic Server
MarkLogic OS Parameter Handling at Startup
05 May 2020 10:13 AM

There are various operating system settings that MarkLogic prescribes for best performance. During the startup of a MarkLogic Server instance, some of these parameters are set to the recommended values. These parameters include:

  • File descriptor limit
  • Number of processes per user
  • Swappiness
  • Dirty background ratio
  • Max sectors
  • Read ahead

For some settings, Info level error log messages are recorded to indicate that these values were changed.  For example, the MarkLogic Server error log might include a line similar to:

2020-03-03 12:40:25.512 Info: Reduced Linux kernel swappiness to 1
2020-03-03 12:40:25.512 Info: Reduced Linux kernel dirty background ratio to 1
2020-03-03 12:40:25.513 Info: Reduced Linux kernel read ahead to 512KB for vda
2020-03-03 12:40:25.513 Info: Increased Linux kernel max sectors to 2048KB for vda
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