这个查询将返回所有非空闲状态的连接信息,包括进程ID(pid)、用户名(usename)、应用程序名称(application_name)、客户端地址(client_addr)、客户端端口(client_port)、事务开始时间(xact_start)、查询开始时间(query_start)、状态改变时间(state_change)、等待事件类型(wait_event_type)、等待事件(wait_event)、当前状...
query_start,round(extract(epoch FROM (now()-query_start))::numeric,1) as query_second, datname, pid, usename, application_name, client_addr, client_port, xact_start, query_start, state_change,wait_event_type,wait_event, state, backend_xid, backend_xmin, query from pg_stat_activity a0...
,psa.wait_event_type,psa.wait_event ,psa.query_start ,psa.backend_start ,psa.client_hostname,psa.client_port ,psa.xact_start transaction_start_time ,psa.state_change,psa.backend_xid,psa.backend_xmin,psa.backend_type from pg_stat_activity psa where 1=1 AND psa.pid <> pg_backend_pid(...
Wait Events of Type BufferPinBufferPin Wait EventDescription BufferPin Waiting to acquire an exclusive pin on a buffer.Table 28.7. Wait Events of Type ClientClient Wait EventDescription ClientRead Waiting to read data from the client. ClientWrite Waiting to write data to the...
perf top [-e <EVENT> | --event=EVENT] [<options>] DESCRIPTION This command generatesanddisplays a performance counter profileinreal time. -F <freq>, --freq=<freq> Profile atthisfrequency. -a, --all-cpus System-wide collection. (default) ...
Check the directory /soft/digoal/soft_bak/oprof_test/oprofile_data/samples/current/stats/throttled for the throttled event names. CPU: Intel Ivy Bridge microarchitecture, speed 2600 MHz (estimated) Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (No ...
I can’t wait to hear all of the ways folks are using pg_stat_statements to improve their usage of PostgreSQL! The challenge from Michael I picked pg_stat_statements as the topic for a few reasons! Firstly, I wanted a topic I could easily contribute a post on myself… but more ...
list, because quite frankly once the event list gets this large, you'd not want to wait around for all the triggers to execute anyway ...) regards, tom lane Re: Commit every N rows in PL/pgsql From Chris Browne Date: 02 June 2010, 22:30:53 ...
> > I intentionally didn't provide a default event ID for InjectionPoint. > > PG_WAIT_EXTENSION needs a default case for backward compatibility, if > > nothing > > else. For this second custom type, it's needless complexity. The value ...
当出现SYN等待队列溢出时,启用cookie来处理,可防范少量的SYN攻击 net.ipv4.tcp_timestamps = 1 # 减少time_wait net.ipv4.tcp_tw_recycle = 0 # 如果=1则开启TCP连接中TIME-WAIT套接字的快速回收,但是NAT环境可能导致连接失败,建议服务端关闭它 net.ipv4.tcp_tw_reuse = 1 # 开启重用。允许将TIME-WAIT...