From: | Kuntal Ghosh <kuntalghosh(dot)2007(at)gmail(dot)com> |
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To: | coelho(at)cri(dot)ensmp(dot)fr |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: pgbench - compute & show latency consistently |
Date: | 2016-09-21 10:07:26 |
Message-ID: | CAGz5QCJjBxLgqt9=uC3gRJUnTGh6BZsMivs7iyPLw0LD_TURsw@mail.gmail.com |
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Lists: | pgsql-hackers |
On Thus, July 7,2016 at 08:39 PM, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> wrote:
> Also there is still the bug under -t which displays a 0 latency.
Your patch clearly fixed the issue.
> The attached patch still fixes that and make it consistent the other way
> around, i.e. by using "=" for latency. I switched to use ":" for weight
> which is an input parameter. I let ":" when there is a long sentence to
> describe the figure displayed, more on aesthetic grounds.
In the above context, I suggest few other changes.
Present output-> progress: 1.0 s, 1221.0 tps, lat 0.816 ms stddev 0.272
Suggestion-> progress: 1.0 s, 1221.0 tps, lat avg 0.816 ms stddev 0.272 ms
Present output->
SQL script 1: so.sql
- weight = 1 (targets 50.0% of total)
- 10010 transactions (50.1% of total, tps = 100.101872)
- latency average = 1.878 ms
- latency stddev = 3.614 ms
Suggestion->
SQL script 1: so.sql
- weight = 1 (targets 50.0% of total)
- 10010 transactions (50.1% of total)
- tps = 100.101872
- latency average = 1.878 ms
- latency stddev = 3.614 ms
Apart from that, pgbench.sgml should be updated to reflect latency
average in the output.
--
Thanks & Regards,
Kuntal Ghosh
EnterpriseDB: http://www.enterprisedb.com
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