=?UTF-8?B?0JLQsNGB0LjQu9GM0LXQsiDQlNC80LjRgtGA0LjQuQ==?= <d(dot)vasilyev(at)postgrespro(dot)ru> writes:
> Samples: 1M of event 'cycles', Event count (approx.): 816922259995, UID:
> pgpro
> Overhead Shared Object Symbol
> 69,72% [kernel] [k] _raw_spin_lock_irqsave
> 1,43% postgres [.] _bt_compare
> 1,19% postgres [.] LWLockAcquire
> 0,99% postgres [.] hash_search_with_hash_value
> 0,61% postgres [.] PinBuffer
Seems like what you've got here is a kernel bug.
regards, tom lane