127835 ?        S    448:03 /usr/sbin/zabbix_proxy: configuration syncer [synced config 275030365 bytes in 81.817207 sec, idle 600 sec]
127835:20210430:052831.402 [Z3005] query failed: [0] PGRES_FATAL_ERROR:ERROR:  deadlock detected
DETAIL:  Process 64959 waits for ShareLock on transaction 1610869401; blocked by process 35622.
Process 35622 waits for ShareLock on transaction 1610861197; blocked by process 64959.
HINT:  See server log for query details.
CONTEXT:  while updating tuple (8678,47) in relation "item_rtdata"
 [update item_rtdata set lastlogsize=13215979 where itemid=4817759;
update item_rtdata set lastlogsize=12228184 where itemid=4817853;
update item_rtdata set lastlogsize=15520660 where itemid=4818605;
update item_rtdata set lastlogsize=15527388 where itemid=4818699;
update item_rtdata set lastlogsize=15550667 where itemid=4818793;
update item_rtdata set lastlogsize=12248851 where itemid=4818887;
update item_rtdata set lastlogsize=13073357 where itemid=4818981;
update item_rtdata set lastlogsize=15361752 where itemid=4819075;
update item_rtdata set lastlogsize=13887891 where itemid=4819457;
update item_rtdata set lastlogsize=13063279 where itemid=4819551;
update item_rtdata set lastlogsize=14095578 where itemid=4819645;
update item_rtdata set lastlogsize=13180563 where itemid=4819739;
....

127920 ?        S     47:22 /usr/sbin/zabbix_proxy: history syncer #5 [processed 201 values in 0.014312 sec, idle 1 sec]
127920:20210430:052829.772 [Z3005] query failed: [0] PGRES_FATAL_ERROR:ERROR:  deadlock detected
DETAIL:  Process 101748 waits for ShareLock on transaction 1610861197; blocked by process 64959.
Process 64959 waits for ShareLock on transaction 1610869407; blocked by process 101748.
HINT:  See server log for query details.
CONTEXT:  while updating tuple (7974,72) in relation "item_rtdata"
 [update item_rtdata set lastlogsize=12379005,mtime=0 where itemid=4966526;
update item_rtdata set lastlogsize=13169243,mtime=0 where itemid=4827071;
update item_rtdata set lastlogsize=13207156,mtime=0 where itemid=5954656;
update item_rtdata set lastlogsize=13173698,mtime=0 where itemid=4897443;
update item_rtdata set lastlogsize=13218318,mtime=0 where itemid=6684365;
update item_rtdata set lastlogsize=5586299,mtime=0 where itemid=6684366;
update item_rtdata set lastlogsize=12274229,mtime=0 where itemid=7380422;
update item_rtdata set lastlogsize=4965000,mtime=0 where itemid=7380423;
]