Alex Richman <alex.r@xxxxxxxxxxxx> writes: > Hi, > > I'm seeing some weirdness with AIO, specifically SYS_io_destroy() is > taking upwards of ~100000 microseconds (~100 miliseconds) per call. > How long is that call expected to take? I can see from the source Well, it waits for an RCU grace period. I would not expect that to take 100ms, though. What kernel version is this? -Jeff