Re: Fix around conn_duration in pgbench - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: Fix around conn_duration in pgbench
Date
Msg-id 20210831.144642.1274071022283648525.t-ishii@sraoss.co.jp
Whole thread Raw
In response to Re: Fix around conn_duration in pgbench  (Yugo NAGATA <nagata@sraoss.co.jp>)
Responses Re: Fix around conn_duration in pgbench  (Yugo NAGATA <nagata@sraoss.co.jp>)
List pgsql-hackers
>> > My 0.02€: From a benchmarking perspective, ISTM that it makes sense to
>> > include disconnection times, which are clearly linked to connections,
>> > especially with -C. So I'd rather have the more meaningful figure even
>> > at the price of a small change in an undocumented feature.
>>
>> +1. The aim of -C is trying to measure connection overhead which
>> naturally includes disconnection overhead.
>
> I think it is better to measure disconnection delays when -C is specified in
> pg 14. This seems not necessary when -C is not specified because pgbench just
> reports "initial connection time".

Ok.

> However, what about pg13 or later? Do you think we should also change the
> behavior of pg13 or later? If so, should we measure disconnection delay even
> when -C is not specified in pg13?

You mean "pg13 or before"?
--
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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