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March 27, 2017

Linux IO tuning

Hello ,

Redhat Enterprise 7.3 64bit , 8cpu  ,16gb Ram , 250gb HDD or 240gb SDD

The following values are default

 

/sys/block/*/queue/rq_affinity 
/sys/block/*/queue/scheduler 
/sys/block/*/queue/nr_requests 
/sys/block/*/queue/read_ahead_kb
 
linux io tuning best practices
 
/sys/block/*/queue/rq_affinity 2
/sys/block/*/queue/scheduler noop
/sys/block/*/queue/nr_requests 256
/sys/block/*/queue/read_ahead_kb 512
 
How is the performance effects?
 
 
 
Click Here!