void AbsorbSyncRequests(void) { CheckpointerRequest *requests = NULL; CheckpointerRequest *request; int n; if (!AmCheckpointerProcess()) return; LWLockAcquire(CheckpointerCommLock, LW_EXCLUSIVE); /* Transfer st
Postgres检查指针进程(Postmaster Checkpointer Process)是PostgreSQL数据库中的一个重要进程,负责执行检查点操作,以确保数据的一致性和持久性。 检查点是...
-+- 09687 postgres /usr/local/pgsql/bin/postgres -D /usr/local/pgsql/data |--= 09688 postgres postgres: logger process |--= 09690 postgres postgres: checkpointer process |--= 09691 postgres postgres: writer process |--= 09692 postgres postgres: wal writer process |--= 09693 postgres po...
checkpoint_flush_after 单位:BLCKSZ当checkpointer process脏数据超过配置阈值时,触发调用OSsync_file_range,告诉osbackendflush线程异步刷盘。 从而削减osdirtypage堆积。 wal_writer_flush_after 单位:BLCKSZ当wal writer process脏数据超过配置阈值时,触发调用OSsync_file_range,告诉osbackendflush线程异步刷盘。 从而...
postgres8130.00.01846921536? Ss18:480:00\_ postgres: checkpointer process postgres8140.00.01846921544? Ss18:480:00\_ postgres: writer process postgres8150.00.01846921528? Ss18:480:00\_ postgres: wal writer process postgres8160.00.01851282264? Ss18:480:00\_ postgres: autovacuum launcher process ...
当bgwriter process脏数据超过配置阈值时,触发调用OS sync_file_range,告诉os backend flush线程异步刷盘。 从而削减os dirty page堆积。 1. 2. 3. checkpoint_flush_after 单位:BLCKSZ 当checkpointer process脏数据超过配置阈值时,触发调用OS sync_file_range,告诉os backend flush线程异步刷盘。
合集·checkpointer 2 播放全部 更多 11:16 Postgres内核 checkpoint 设计机制 |PostgreSQL |内核源码 1809 2-22 12:22 Postgres内核(v13.2) |checkpoint process 启动时机 |PostgreSQL |checkpoint 245 2-23 PostgreSQL 14 播放全部 更多 12:22 Postgres内核(v13.2) |checkpoint process 启动时机 |Postgr...
Checkpointer process writes dirty buffers from shared buffers to respective data file on periodic basis depending on the configuration. checkpoint_timeout and max_wal_size are the two important one has to look for when configuring checkpoint ...
health_check_retry_delay = 1 failover_command = '/etc/pgpool-II/failover_stream.sh %d %H /postgres/data/trigger.file' #其中这个文件failover_stream.sh需要定义 #另外并行模式需要关闭: parallel_mode = off 主库故障后,备库切换成主库的触发文件如下: ...
pg_stat_checkpointer and its impact on pg_stat_bgwriter How this works in Postgres 16 The role of the checkpointer process The…Continue reading Performance implications of medium size values and TOAST in Postgres and how to mitigate them02 November, 2023 Today, we're going to talk about ...