Linux IO tuning

mack663

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?