With io_uring, CPUSensor service shows 127 degree reading intermittently

openbmc / dbus-sensors

D-Bus configurable sensor scanning applications

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With io_uring, CPUSensor service shows 127 degree reading intermittently #19

Open ZhikuiRen opened 2 years ago

ZhikuiRen commented 2 years ago

When io_uring is enabled with CPUSensor, SEL were logged with various CPU sensors with value of 127 degree for overnight run. I suspect it is related to driver, need to debug further. CPUSensor is left with epoll in this review https://gerrit.openbmc.org/c/openbmc/dbus-sensors/+/46918

leiyu-bytedance commented 2 years ago

What is the occurrence rate? We tried to pick https://gerrit.openbmc.org/c/openbmc/dbus-sensors/+/56483, or just enable uring_args for CPU sensor, and did not find issues.