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Opened 6 years ago

Last modified 3 years ago

#346 new defect

Scheduler SMP load balancing suboptimal

Reported by: decky Owned by: jermar
Priority: major Milestone: 0.7.1
Component: helenos/kernel/generic Version: mainline
Keywords: Cc:
Blocker for: Depends on:
See also:

Description

When running two CPU-bound single-threaded tasks (e.g. malloc1 test) on a 2-way SMP machine, the load balancing thread moves both of the mostly-ready threads (as well as most of the other ready threads) to a single CPU, keeping the other CPU almost idle. This renders in a very suboptimal utilization of the CPUs.

Change History (2)

comment:1 Changed 5 years ago by jermar

  • Milestone changed from 0.5.0 to 0.5.1

comment:2 Changed 3 years ago by jermar

  • Milestone changed from 0.6.0 to 0.7.1
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