Re: 42.0.0.jre7, driver logging takes 30-40% of my server's time

From: Konstantinos Kougios <kostas(dot)kougios(at)googlemail(dot)com>
To: Dave Cramer <pg(at)fastcrypt(dot)com>
Cc: Jorge Solórzano <jorsol(at)gmail(dot)com>, List <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: 42.0.0.jre7, driver logging takes 30-40% of my server's time
Date: 2017-03-22 17:34:53
Message-ID: b8d59020-b141-8c72-4446-c35aeeddb32f@googlemail.com
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It continues. It must be a misconfig of logback+common logging

On 22/03/17 17:32, Dave Cramer wrote:
> I'm confused when you say it passes this, does it return or continue
> after this if statement ?
>
> Dave Cramer
>
> davec(at)postgresintl(dot)com <mailto:davec(at)postgresintl(dot)com>
> www.postgresintl.com <http://www.postgresintl.com>
>
> On 22 March 2017 at 13:24, Konstantinos Kougios
> <kostas(dot)kougios(at)googlemail(dot)com <mailto:kostas(dot)kougios(at)googlemail(dot)com>>
> wrote:
>
> I am using logback and I don't see any postgres-driver related
> logging, so I assume it should be off
>
> Looking at the stacktrace of the profile though, it seems it
> passes this code:
>
> if (!isLoggable(level)) {
> return; }
>
>
> So it seems as if it is ON though it doesn't log anything.
>
>
> On 22/03/17 17:21, Jorge Solórzano wrote:
>> Have you enabled the Logger with a FINEST (TRACE) level?
>>
>>
>>
>> On Wed, Mar 22, 2017 at 11:13 AM, Konstantinos Kougios
>> <kostas(dot)kougios(at)googlemail(dot)com
>> <mailto:kostas(dot)kougios(at)googlemail(dot)com>> wrote:
>>
>> I tried to paste an image with a profile, but my email was
>> rejected.
>>
>> It seems logging is called in places like row.getInt(),
>> row.getString() etc without a check for the logging level.
>> Then it takes a lot of time for those to be processed,
>> especially for queries that get a lot of data. It goes down
>> to parsing strings and locale and it just is slow. I see
>> postgres processing a query for 1 sec but on the java side it
>> takes 5 secs to get the data back to my code. Part of this
>> slowdown is due to the logging. Can it be optimized, i.e.
>> having a boolean to true/false if logging is enabled and then
>> do the calls?
>>
>> Thanks
>>
>>
>>
>>
>> --
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>
>

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