Hi,
I want to be sure you understand the impact is high in multi-threaded
applications without possibility to overcome unless one re-writes the code to
avoid the bean & ognl in Simple language.
I was under the impression that LTS implies such kind of patches, but it's your
call, I don't want to start a debate. Maybe it's worth adding a note for others
to be aware of the current issue with version 3.(0->5).x?
Thank you and regards, Corneliu
-----Original Message-----
From: Claus Ibsen <claus.ib...@gmail.com>
Sent: Monday, October 12, 2020 14:31
To: users@camel.apache.org
Subject: Re: Performance regression with bean and ognl expressions in Simple
language version 3.4.x
On Mon, Oct 12, 2020 at 11:31 AM Corneliu Chitic
<corneliu.chi...@computaris.com.invalid> wrote:
>
> Hi,
>
> Thanks for the update, fixes and sorry for late response. We've been busy
> with a release for which we had to overcome this performance issue by
> migrating the expressions and using "ref:" language.
> We'll run some trials of the same code in the near future of the
> 3.4.5-SNAPSHOT version if I understood correctly and will post an update.
> Definitely we won't migrate to 3.6.x, we'll stick to 3.4.x for some time.
>
Okay the improvements are only in new versions, not in 3.4.x.
> Thank you, Corneliu
>
> -----Original Message-----
> From: Claus Ibsen <claus.ib...@gmail.com>
> Sent: Monday, October 5, 2020 15:43
> To: users@camel.apache.org
> Subject: Re: Performance regression with bean and ognl expressions in
> Simple language version 3.4.x
>
> Hi Corneliu
>
> Thanks for the reproducer. We have fixed a bunch of stuff and you are welcome
> to try with SNAPSHOT and do profiling again and report back if you can find
> improvements too.
> Or if you dont have time then test again when Camel 3.6.0 comes out
> later in October
>
> On Thu, Sep 17, 2020 at 2:32 AM Corneliu Chitic
> <corneliu.chi...@computaris.com.invalid> wrote:
> >
> > Hi,
> >
> > we've identified a performance regression while running same code with
> > Apache Camel 3.4.3 + Spring Boot vs Apache Camel 2.24.2 with Spring
> > framework 5.1.9. We've migrated one application to this LTS version and we
> > face this impact.
> > The main bottleneck is the synchronized block from:
> > org.apache.camel.impl.engine.AbstractCamelContext.resolveLanguage(String).
> > The root cause is the time spent to validate Simple expressions when using
> > bean language (${bean:name?method=something}) or OGNL like calls to POJO
> > methods (${exchangeProperty.pojo.method}). According to the stack traces
> > the new version spends time to allocate the bean + full setup of it.
> > Blocking times are quite high (average 100ms, max could be ~300ms) and as
> > the number of parallel processing threads increases it goes up steadily.
> >
> > Has anything changed in version 3.x (or more precisely 3.4.x)? The
> > changelogs and upgrade tutorial didn't suggested anything in this area.
> > Is there any configuration flag that would allow us to switch back to
> > version 2.x mode of working for this functionality?
> >
> > We have run repeated trials and have consistent results with both versions;
> > we have a project setup to demo this and also some Java Flight recordings
> > for comparison. I don't think I can attach anything to this maillist,
> > please let me know how I can provide any additional input if needed.
> >
> > Thank you, Corneliu
> > This email is subject to Computaris email terms of use:
> > https://www.computaris.com/email-terms-use/
>
>
>
> --
> Claus Ibsen
> -----------------
> http://davsclaus.com @davsclaus
> Camel in Action 2: https://www.manning.com/ibsen2
--
Claus Ibsen
-----------------
http://davsclaus.com @davsclaus
Camel in Action 2: https://www.manning.com/ibsen2
