Hi, On 2015-09-16 10:37:43 -0400, Jesper Pedersen wrote: > #ifdef LWLOCK_STATS > lwstats->spin_delay_count += SpinLockAcquire(&lock->mutex); > + > + /* > + * We scan the list of waiters from the back in order to find > + * out how many of the same lock type are waiting for a lock. > + * Similar types have the potential to be groupped together. > + *
Except for LW_WAIT_UNTIL_FREE there shouldn't be much in terms of grouping? Can't you instead iterate and count counter[waiter->lwWaitMode]++ or so? Greetings, Andres Freund -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
