Re: Statement timeout behavior in extended queries - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: Statement timeout behavior in extended queries
Date
Msg-id 20170405.102208.330065229364054347.t-ishii@sraoss.co.jp
Whole thread Raw
In response to Re: Statement timeout behavior in extended queries  (Tatsuo Ishii <ishii@sraoss.co.jp>)
Responses Re: Statement timeout behavior in extended queries  ("Tsunakawa, Takayuki" <tsunakawa.takay@jp.fujitsu.com>)
List pgsql-hackers
>> What's your point of the question? What kind of problem do you expect
>> if the timeout starts only once at the first parse meesage out of
>> bunch of parse messages?
> 
> It's perfectly valid to send a lot of Parse messages without
> interspersed Sync or Bind/Execute message.  There'll be one timeout
> covering all of those Parse messages, which can thus lead to a timeout,
> even though nothing actually takes long individually.

Hmm. IMO, that could happen even with the current statement timeout
implementation as well.

Or we could start/stop the timeout in exec_execute_message()
only. This could avoid the problem above. Also this is more consistent
with log_duration/log_min_duration_statement behavior than now.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp



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