Messages in this thread | | | Date | Mon, 23 May 2022 09:09:07 +0200 | From | Sebastian Andrzej Siewior <> | Subject | Re: vchiq: Performance regression since 5.18-rc1 |
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On 2022-05-22 01:22:00 [+0200], Stefan Wahren wrote: > Hi, Hi,
> while testing the staging/vc04_services/interface/vchiq_arm driver with my > Raspberry Pi 3 B+ (multi_v7_defconfig) i noticed a huge performance > regression since [ff042f4a9b050895a42cae893cc01fa2ca81b95c] mm: > lru_cache_disable: replace work queue synchronization with synchronize_rcu > > Usually i run "vchiq_test -f 1" to see the driver is still working [1].
What about https://lore.kernel.org/all/YmrWK%2FKoU1zrAxPI@fuller.cnet/
Sebastian
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