Re: [PATCH v4 bpf-next 6/6] bpf: runqslower: use task local storage

On Mon, Feb 22, 2021 at 05:20:14PM -0800, Song Liu wrote:

Replace hashtab with task local storage in runqslower. This improves the
performance of these BPF programs. The following table summarizes average
runtime of these programs, in nanoseconds:

                          task-local   hash-prealloc   hash-no-prealloc
handle__sched_wakeup             125             340               3124
handle__sched_wakeup_new        2812            1510               2998
handle__sched_switch             151             208                991

Nice!  The required code change is also minimal.