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| author | Peter Zijlstra <peterz@infradead.org> | 2025-11-07 17:01:31 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-11 15:26:19 +0100 |
| commit | 98a26893fad4180d8ea210d8749392790dfddc81 (patch) | |
| tree | 0c91d9db0c8444bd25856ef9dcdd85369299fe30 /tools/perf/scripts/python/stackcollapse.py | |
| parent | d4ffb9ce8e6501bebbf833cd7ae3f34eab1f76ba (diff) | |
sched/fair: Proportional newidle balance
commit 33cf66d88306663d16e4759e9d24766b0aaa2e17 upstream.
Add a randomized algorithm that runs newidle balancing proportional to
its success rate.
This improves schbench significantly:
6.18-rc4: 2.22 Mrps/s
6.18-rc4+revert: 2.04 Mrps/s
6.18-rc4+revert+random: 2.18 Mrps/S
Conversely, per Adam Li this affects SpecJBB slightly, reducing it by 1%:
6.17: -6%
6.17+revert: 0%
6.17+revert+random: -1%
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Chris Mason <clm@meta.com>
Link: https://lkml.kernel.org/r/6825c50d-7fa7-45d8-9b81-c6e7e25738e2@meta.com
Link: https://patch.msgid.link/20251107161739.770122091@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions