On Sun, Mar 12, 2017 at 12:53 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
diabloneo@gmail.com writes: > During the daytime, there are about 300 postgres processes running, work as > expected. On 00:00 each day, there will be about 200 more postgresql > processes created, now totally about 500. And from that time, thoese working > processes are all blocked on semop function. I check this using pstack > command, and also check the output of ipcs -s [-i]. After this has happened, > all new connection will stay in state authentication.