On 2019/7/22 18:26, Aubrey Li wrote: > The granularity period of util_avg seems too large to decide task priority > during pick_task(), at least it is in my case, cfs_prio_less() always picked > core max task, so pick_task() eventually picked idle, which causes this change > not very helpful for my case. > > <idle>-0 [057] dN.. 83.716973: __schedule: max: sysbench/2578 > ffff889050f68600 > <idle>-0 [057] dN.. 83.716974: __schedule: > (swapper/5/0;140,0,0) ?< (mysqld/2511;119,1042118143,0) > <idle>-0 [057] dN.. 83.716975: __schedule: > (sysbench/2578;119,96449836,0) ?< (mysqld/2511;119,1042118143,0) > <idle>-0 [057] dN.. 83.716975: cfs_prio_less: picked > sysbench/2578 util_avg: 20 527 -507 <======= here=== > <idle>-0 [057] dN.. 83.716976: __schedule: pick_task cookie > pick swapper/5/0 ffff889050f68600
Can you share your setup of the test? I would like to try it locally. Thanks.
