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From Laurent Hasson <...@CapsicoHealth.com>
Subject RE: Flushing async appenders
Date Tue, 28 Nov 2017 15:58:50 GMT
Sorry, latest and greatest:
- log4j-api-2.9.1.jar
- log4j-core-2.9.1.jar
- log4j-web-2.9.1.jar
- disruptor-3.3.6.jar

I will try to get a Jira ticket in by end of day today if I can.


http://picocli.info looks fun.


Thanks,

Laurent Hasson
Co-Founder and CTO
CapsicoHealth Inc.


Research has shown that capsaicin, the substance that gives hot red peppers (or chilies) their
kick, and boosts our metabolism, keeps immature fat cells from developing into full-fledged
ones. And a recent study found that a compound in some sweet peppers (called CH-19 Sweet),
which resembles capsaicin, provides similar positive metabolic effects.

-----Original Message-----
From: Remko Popma [mailto:remko.popma@gmail.com] 
Sent: Tuesday, November 28, 2017 07:22
To: Log4J Users List <log4j-user@logging.apache.org>
Subject: Re: Flushing async appenders

What version of Log4j2 are you using?

You can raise a JIRA ticket here: https://issues.apache.org/jira/browse/LOG4J2

(Shameless plug) Every java main() method deserves http://picocli.info

> On Nov 28, 2017, at 18:08, Laurent Hasson <ldh@CapsicoHealth.com> wrote:
> 
> Hello,
> 
> Sorry for asking, but where could I log a JIRA ticket? I have a very simple test case:
> 
> public class Log4JTest
>  {
>    protected static final Logger Log = LogManager.getLogger(Log4JTest.class.getName());
>    protected static final int MAX = 10;
>    public static void main(String[] args)
>      {
>        for (int i = 0; i < MAX; ++i)
>          {
>            for (int j = 0; j < MAX; ++j)
>              {
>                Log.fatal("Fatal i=" + i + "; j=" + j + ";");
>                Log.error("Error i=" + i + "; j=" + j + ";");
>                Log.warn("Warn   i=" + i + "; j=" + j + ";");
>                Log.info("Info   i=" + i + "; j=" + j + ";");
>                Log.debug("Debug i=" + i + "; j=" + j + ";");
>                Log.trace("Trace i=" + i + "; j=" + j + ";");
>              }
>          }
>        Log.info("DONE.");
>      }
>  }
> 
> And a very simple log4j2.xml
> 
> <?xml version="1.0" encoding="UTF-8"?> <Configuration status="info">
>    <Appenders>
>        <Console name="Console" target="SYSTEM_OUT" >
>            <PatternLayout>
>                             <pattern>%d{MMdd.HHmmss.SSS}#%-3t %level{length=1}
%15.15c{1}|  %m%ex{20}%n</pattern>
>            </PatternLayout>
>                </Console>
>    </Appenders>
>    <Loggers>
>        <AsyncRoot level="debug">
>                        <AppenderRef ref="Console" />
>        </AsyncRoot>
>    </Loggers>
> </Configuration>
> 
> And I can observe that lots of messages are either lost of are not flushed. This happens
even if I change the console to go to a file.
> 
> Thank you,
> 
> Laurent Hasson
> Co-Founder and CTO
> CapsicoHealth Inc.
> 
> 
> Research has shown that capsaicin, the substance that gives hot red peppers (or chilies)
their kick, and boosts our metabolism, keeps immature fat cells from developing into full-fledged
ones. And a recent study found that a compound in some sweet peppers (called CH-19 Sweet),
which resembles capsaicin, provides similar positive metabolic effects.
> 
> -----Original Message-----
> From: Remko Popma [mailto:remko.popma@gmail.com]
> Sent: Thursday, November 23, 2017 17:36
> To: Log4J Users List <log4j-user@logging.apache.org>
> Subject: Re: Flushing async appenders
> 
> That is strange: with the async appender (and also with async 
> loggers),
> Log4j2 should automatically flush the I/O buffer when the async queue is empty...
> You may have found an issue. Can you raise a JIRA ticket for this?
> 
> Meanwhile, you can add attribute  immediateFlush="true"  to your 
> Rolling file appender configuration. (See also 
> https://logging.apache.org/log4j/2.x/manual/appenders.html#RollingFile
> Appender
> )
> 
> On Thu, Nov 23, 2017 at 11:42 PM, Laurent Hasson 
> <ldh@capsicohealth.com>
> wrote:
> 
>> Hello all,
>> 
>> I have the following configuration file using async appenders. It 
>> works well but I have one issue. During low-volume activity on my 
>> site, it seems that nothing is output to the file, so it's hard to see what's going
on.
>> Same issue happens while developing. But as soon as enough activity 
>> occurs, then the logs are flushed to the file as expected. I suspect 
>> there is a buffer somewhere that only gets flushed when it's full, 
>> and so during low activity, that may take a while. Is there a way to 
>> control that so that flushing happens more often, wither by sizing 
>> the buffer to be smaller, or maybe some timeout value, i.e., flush at least once
every 5s?
>> 
>> <?xml version="1.0" encoding="UTF-8"?> <Configuration status="info">
>>      <Properties>
>>            <Property
>> name="log-path">C:\Projects\TomcatDevServer\logs\</
>> Property>
>>            <Property name="now">${sys:startup}</Property>
>>      </Properties>
>>      <Appenders>
>>            <RollingFile name="FILES" fileName="${log-path}/loga.log"
>> filePattern="${log-path}/logs.${now}.%i.log.gz">
>>                  <PatternLayout>
>>                <pattern>%d{MMdd.HHmmss.SSS}#%-3t %level{length=1} 
>> %15.15c{1}|  %m%ex{20}%n</pattern>
>>                  </PatternLayout>
>>                  <Policies>
>>                        <SizeBasedTriggeringPolicy size="100 MB" />
>>                  </Policies>
>>                  <DefaultRolloverStrategy max="99999"
>> compressionLevel="6"/>
>>            </RollingFile>
>>            <Async name="ASYNC">
>>                  <AppenderRef ref="FILES" />
>>            </Async>
>>      </Appenders>
>>      <Loggers>
>>            <Root level="debug">
>>                 <AppenderRef ref="ASYNC" />
>>            </Root>
>>      </Loggers>
>> </Configuration>
>> 
>> 
>> Thank you,
>> 
>> 
>> Laurent Hasson
>> 
>> 
>> 
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