O pgAdmin é extremamente lento em qualquer operação remota

10

Eu executo esta consulta do meu pgAdmin local conectando-se remotamente ao nosso servidor de desenvolvimento:

select * from users order by random() limit 1;

trava por 17 segundos e mostra

Total query runtime: 148 ms. 
1 row retrieved.

Ele também depende de qualquer operação: mesmo clicando com o botão direito do mouse em uma tabela.

Depois, eu me conecto via RDP e execute a mesma consulta na mesma versão do pgAdmin, que exibe os resultados imediatamente com query time: 32 ms.

Em seguida, executo a consulta no meu pgAdmin local novamente:

Total query runtime: 337 ms.
1 row retrieved.

Eu tenho ping 130 ms para o servidor. A velocidade da conexão deve ser mais do que suficiente, porque eu posso enviar arquivos via FTP lá rapidamente.

A mesma consulta quando executada com meu psql local termina em alguns segundos com o tempo de conexão incluído.

A mesma consulta no meu pgAdmin local com minha cópia db local também termina imediatamente.

A versão do pgAdmin é 1.20.0. Verificado também no mais recente 1,22 - ainda o mesmo.

O que posso fazer para acelerar o pgAdmin?

Observe que o psql funciona bem, não vejo as mesmas latências lá.

Registro do pgAdmin por 17 segundos de execução da consulta:

2016-02-06 16:18:03 INFO   : queueing : select * from users order by random() limit 1;
2016-02-06 16:18:03 QUERY  : Thread executing query (1:server): select * from users order by random() limit 1;
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:03 QUERY  : Query result: integer
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:03 QUERY  : Query result: 23
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:03 QUERY  : Query result: character varying(255)
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:03 QUERY  : Query result: 1043
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:03 QUERY  : Query result: character varying(255)
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:03 QUERY  : Query result: 1043
2016-02-06 16:18:03 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:04 QUERY  : Query result: integer
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:04 QUERY  : Query result: 23
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:04 QUERY  : Query result: integer
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:04 QUERY  : Query result: 23
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:04 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:04 QUERY  : Query result: 1114
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT format_type(oid,0) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:04 QUERY  : Query result: timestamp(0) without time zone
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:04 QUERY  : Query result: 1114
2016-02-06 16:18:04 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:05 QUERY  : Query result: integer
2016-02-06 16:18:05 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:06 QUERY  : Query result: 23
2016-02-06 16:18:06 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:06 QUERY  : Query result: integer
2016-02-06 16:18:06 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:06 QUERY  : Query result: 23
2016-02-06 16:18:06 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:07 QUERY  : Query result: integer
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:07 QUERY  : Query result: 23
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:07 QUERY  : Query result: boolean
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:07 QUERY  : Query result: 16
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 20
2016-02-06 16:18:07 QUERY  : Query result: bigint
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=20
2016-02-06 16:18:07 QUERY  : Query result: 20
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:07 QUERY  : Query result: character varying(255)
2016-02-06 16:18:07 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:08 QUERY  : Query result: 1043
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:08 QUERY  : Query result: character varying(255)
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:08 QUERY  : Query result: 1043
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:08 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:08 QUERY  : Query result: 1114
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:08 QUERY  : Query result: integer
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:08 QUERY  : Query result: 23
2016-02-06 16:18:08 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:09 QUERY  : Query result: integer
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:09 QUERY  : Query result: 23
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:09 QUERY  : Query result: boolean
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:09 QUERY  : Query result: 16
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:09 QUERY  : Query result: integer
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:09 QUERY  : Query result: 23
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:09 QUERY  : Query result: integer
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:09 QUERY  : Query result: 23
2016-02-06 16:18:09 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:10 QUERY  : Query result: boolean
2016-02-06 16:18:10 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:10 QUERY  : Query result: 16
2016-02-06 16:18:10 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:10 QUERY  : Query result: character varying(255)
2016-02-06 16:18:10 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:10 QUERY  : Query result: 1043
2016-02-06 16:18:11 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:11 QUERY  : Query result: character varying(255)
2016-02-06 16:18:11 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:11 QUERY  : Query result: 1043
2016-02-06 16:18:11 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:11 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:11 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:12 QUERY  : Query result: 1114
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:12 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:12 QUERY  : Query result: 1114
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:12 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:12 QUERY  : Query result: 1114
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:12 QUERY  : Query result: boolean
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:12 QUERY  : Query result: 16
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:12 QUERY  : Query result: integer
2016-02-06 16:18:12 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:13 QUERY  : Query result: 23
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:13 QUERY  : Query result: integer
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:13 QUERY  : Query result: 23
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:13 QUERY  : Query result: boolean
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:13 QUERY  : Query result: 16
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:13 QUERY  : Query result: integer
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:13 QUERY  : Query result: 23
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:13 QUERY  : Query result: integer
2016-02-06 16:18:13 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:14 QUERY  : Query result: 23
2016-02-06 16:18:14 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:14 QUERY  : Query result: boolean
2016-02-06 16:18:14 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:14 QUERY  : Query result: 16
2016-02-06 16:18:14 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:14 QUERY  : Query result: integer
2016-02-06 16:18:14 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:14 QUERY  : Query result: 23
2016-02-06 16:18:14 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:15 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:15 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:15 QUERY  : Query result: 1114
2016-02-06 16:18:15 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:15 QUERY  : Query result: integer
2016-02-06 16:18:15 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:16 QUERY  : Query result: 23
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:16 QUERY  : Query result: integer
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:16 QUERY  : Query result: 23
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:16 QUERY  : Query result: integer
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:16 QUERY  : Query result: 23
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:16 QUERY  : Query result: integer
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:16 QUERY  : Query result: 23
2016-02-06 16:18:16 QUERY  : Scalar query (server): SELECT format_type(oid,259) as typname FROM pg_type WHERE oid = 1043
2016-02-06 16:18:17 QUERY  : Query result: character varying(255)
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1043
2016-02-06 16:18:17 QUERY  : Query result: 1043
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:17 QUERY  : Query result: integer
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:17 QUERY  : Query result: 23
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:17 QUERY  : Query result: boolean
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:17 QUERY  : Query result: 16
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:17 QUERY  : Query result: integer
2016-02-06 16:18:17 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:18 QUERY  : Query result: 23
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:18 QUERY  : Query result: integer
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:18 QUERY  : Query result: 23
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:18 QUERY  : Query result: integer
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:18 QUERY  : Query result: 23
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:18 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:18 QUERY  : Query result: 1114
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 23
2016-02-06 16:18:18 QUERY  : Query result: integer
2016-02-06 16:18:18 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=23
2016-02-06 16:18:19 QUERY  : Query result: 23
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:19 QUERY  : Query result: boolean
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:19 QUERY  : Query result: 16
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:19 QUERY  : Query result: boolean
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:19 QUERY  : Query result: 16
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:19 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:19 QUERY  : Query result: 1114
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 20
2016-02-06 16:18:19 QUERY  : Query result: bigint
2016-02-06 16:18:19 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=20
2016-02-06 16:18:20 QUERY  : Query result: 20
2016-02-06 16:18:20 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 16
2016-02-06 16:18:20 QUERY  : Query result: boolean
2016-02-06 16:18:20 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=16
2016-02-06 16:18:20 QUERY  : Query result: 16
2016-02-06 16:18:20 QUERY  : Scalar query (server): SELECT format_type(oid,-1) as typname FROM pg_type WHERE oid = 1114
2016-02-06 16:18:20 QUERY  : Query result: timestamp without time zone
2016-02-06 16:18:20 QUERY  : Scalar query (server): SELECT CASE WHEN typbasetype=0 THEN oid else typbasetype END AS basetype
  FROM pg_type WHERE oid=1114
2016-02-06 16:18:20 QUERY  : Query result: 1114
postgresql postgresql-9.4 postgresql-performance pgadmin Vlad
fonte
Sempre trava?
Dezso
@dezso sempre que eu pressionar F5 para executar novamente a consulta. é suficiente para "sempre"?
Vlad

Respostas:

6

A extração de pgadmin.logmostra que, para cada coluna de saída do resultado, pgadminexecuta duas consultas no catálogo, uma para obter o nome formatado do tipo oide outra para obter um potencial tipo base.

Em sua extração, se eu estiver contando direito, o número total dessas consultas parece ser 106.

Desde o momento do ping 148 ms, vamos supor que o tempo mínimo para uma ida e volta ao servidor seja 148 ms. Portanto, o tempo mínimo gasto por esse conjunto de consultas seria 148 x 106 = 15688 msou15.6 s

Por outro lado, o psqlcliente da linha de comando não faz nenhuma dessas consultas, portanto, pode-se esperar que termine pelo menos 15.6segundos antes do pgadmin.

Não conheço nenhuma opção no pgadmin para desativar isso; convém perguntar aos desenvolvedores ou verificar se você possui a versão mais recente, mas uma pergunta semelhante à sua foi feita no ano passado na lista de discussão e, aparentemente, não resposta:

Renderização de resultados de consultas longas (em arquivos pgadmin-support).

É um detalhe decepcionante da implementação no pgAdmin. Ele poderia obter todos os resultados através de uma única consulta, com a lista de tipos OIDs passados ​​em uma IN(...)construção ou matriz. Ele também pode armazenar em cache esses resultados e nem mesmo repetir consultas em OIDs que ele já viu.

Daniel Vérité
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