No we are not and since it’s a log.debug() it should just get dropped on the
floor before any sort of copying occurs, right?
Ron DiFrango
On 2/13/17, 12:50 PM, "Matt Sicker" <boa...@gmail.com> wrote:
Are you logging that info?
On 13 February 2017 at 11:46, DiFrango, Ronald <
ronald.difra...@capitalone.com> wrote:
> All,
>
> One thing we just noticed is that we are using Apache’s HTTP connection
> pooling for our downstream calls and in our latest performance run is that
> the READ operation on org.apache.http.impl.conn.LoggingInputStream seems
> to be taking a bulk of the time.
>
> If I look at the code, once the HTTP client reads the byte stream it
> issues a log.debug which could be a large payload, I wonder if that’s what
> is causing the issue?
>
> Please note aware, the version of httpclient we’ve been using has also
> been constant:
>
> <dependency>
> <groupId>org.apache.httpcomponents</groupId>
> <artifactId>httpclient</artifactId>
> <version>4.5.2</version>
> </dependency>
>
> Ron DiFrango
>
>
> On 2/13/17, 11:44 AM, "DiFrango, Ronald" <ronald.difra...@capitalone.com>
> wrote:
>
> This is running in Tomcat 8.0.33 in a Docker Container via AWS’s ECS
> which is identical to before with log4j2 2.5.
>
> We’ve run the application with Visual VM and the one thing for sure
> that we’ve seen is that in 2.6.2 it created tons of threads, something
like
> 50+ but on 2.6 or 2.7 it was only 2. Now the threads were short lived,
but
> they got created.
>
> We’re running another performance test today with Async loggers to see
> if that helps or exhibits the same thing though previous testing with
Async
> had some of the same char
>
> Here’s our layout pattern:
>
> [%t] %d{DATE} %-5p %-15c{1} [%X]: %cm%n
>
> Please not the %cm is a custom message handler that we use to use to
> handle security filtering of the message payload aka we extend from
> LogEventPatternConverter.
>
> Thanks,
>
> Ron DiFrango
>
> On 2/13/17, 11:22 AM, "Matt Sicker" <boa...@gmail.com> wrote:
>
> What server environment are you running this in?
>
> On 13 February 2017 at 09:19, Remko Popma <remko.po...@gmail.com>
> wrote:
>
> > Ron,
> >
> > We haven't heard of any issues like you describe.
> > Have you tried running your application with Java Flight
Recorder
> > <https://docs.oracle.com/javacomponents/jmc-5-4/jfr-
> > runtime-guide/run.htm#JFRUH176>?
> > This should help diagnose what is going on.
> >
> > Remko
> >
> >
> >
> > On Mon, Feb 13, 2017 at 9:59 PM, DiFrango, Ronald <
> > ronald.difra...@capitalone.com> wrote:
> >
> > > All,
> > >
> > > We recently upgrade to 2.6 and noticed a dramatic increase in
> CPU and
> > > Thread utilization that seems to be tied to the new “garbage
> free” mode
> > of
> > > log4j 2.6. Here’s some of the baseline numbers:
> > >
> > >
> > > · Log4j 2.5: CPU typically ran around 25%
> > >
> > > · Log4j 2.6: CPU typically ran around 75%
> > >
> > > · Log4j 2.6.2+: CPU typically ran around 100%
> > >
> > > · We’ve also tried turning off garbage free mode and
> that made
> > > things worse as the CPU was around 120% and caused us to not
> meet our
> > SLA’s
> > >
> > > It important to note that this is a REST Api using Jersey and
> typically
> > > responds in about in under 50ms on a per request so its high
> volume, but
> > > the logging level is WARN or higher except for our single
> performance log
> > > record which is written once per request using the lambda base
> approach.
> > >
> > > Our next test is going to be switching to all ASYNC loggers
> and see what
> > > effect that has, but I guess the general question is, has
> anyone else
> > seen
> > > this? Any thoughts?
> > >
> > > Ron DiFrango
> > > ________________________________________________________
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>
>
> --
> Matt Sicker <boa...@gmail.com>
>
>
> ________________________________________________________
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--
Matt Sicker <boa...@gmail.com>
________________________________________________________
The information contained in this e-mail is confidential and/or proprietary to
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