> Can I draw the conclusion that continually acquiring the spinlock causes the soft > lockup and the CPU has been stuck for 22s? > Can I think in this way? No. It's been stuck for 22s *TRYING* and *FAILING* to get the spinlock. For comparison - spinlocks are usually used when you need a lock, but the code protected by the lock is short (things like adding to a linked list, etc), so it should again become available in milliseconds - things where it would take longer to put this thread to sleep and wake another one up than we expect to be waiting for this lock.
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