pg_basebackup blocking all queries with horrible performance
| От | Lonni J Friedman |
|---|---|
| Тема | pg_basebackup blocking all queries with horrible performance |
| Дата | |
| Msg-id | CAP=oouEy9xxa6biSnqNSJKMf0fuKsufiYjbz5SJyvj0gc0Qkiw@mail.gmail.com обсуждение исходный текст |
| Ответы |
could not rename temporary statistics file "pg_stat_tmp/pgstat.tmp"
to "pg_stat_tmp/pgstat.stat": No such file or directory
Re: pg_basebackup blocking all queries with horrible performance |
| Список | pgsql-admin |
Greetings, I have a 4 server postgresql-9.1.3 cluster (one master doing streaming replication to 3 hot standby servers). All of them are running Fedora-16-x86_64. http://wiki.postgresql.org/wiki/Lock_Monitoring I'm finding that I cannot runpg_basebackup at all, or it slows down all SQL queries from running until pg_basebackup has completed (and the load on the box just takes off to over 30.00). By "blocks" I mean that any query that is submitted just hangs and does not return for seconds or sometimes even minutes until pg_basebackup has stopped. I'm assuming that this isn't expected behavior, so I'm rather confused on what is going on. The command that I'm issuing is: pg_basebackup -v -D /mnt/backups/backups/tmp0 -x -Ft -U postgres Can someone provide some guidance on how to debug this? Or is there some way to reduce the performance/priority of pg_basebackup so that it has much less impact on overall performance? thanks!
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