Hi experts,
we have a Postgresql v14.8 database, almost thousands of backends hang on MultiXactOffsetSLRU at the same time, all of these sessions running same query "SELECT ....", from OS and postgresql slow log, we found all of these query on "BIND" stage.
LOG: duration: 36631.688 ms bind S_813: SELECT
LOG: duration: 36859.786 ms bind S_1111: SELECT
LOG: duration: 35868.148 ms bind <unnamed>: SELECT
LOG: duration: 36906.471 ms bind <unnamed>: SELECT
LOG: duration: 35955.489 ms bind <unnamed>: SELECT
LOG: duration: 36833.510 ms bind <unnamed>: SELECT
LOG: duration: 36839.535 ms bind S_1219: SELECT
LOG: duration: 36859.786 ms bind S_1111: SELECT
LOG: duration: 35868.148 ms bind <unnamed>: SELECT
LOG: duration: 36906.471 ms bind <unnamed>: SELECT
LOG: duration: 35955.489 ms bind <unnamed>: SELECT
LOG: duration: 36833.510 ms bind <unnamed>: SELECT
LOG: duration: 36839.535 ms bind S_1219: SELECT
...
this database hang on MultiXactOffsetSLRU and MultiXactOffsetBuffer long time.
could you direct me why they are hanging on 'BIND‘ stage with MultiXactOffsetSLRU ?
Thanks,
James
