The one bundled with TomEE.
myfaces 2.3.7 on TomEE 8.0.6
and e.g. myfaces 2.3.9 on TomEE 8.0.12
Am 26.10.2023 um 16:08 schrieb Richard Zowalla:
Which JSF lib are you using?
Am 26. Oktober 2023 16:00:57 MESZ schrieb Jens Zurawski <[email protected]
:
Thank you for your quick reply, Jonathan.
It is good to know, that normally the Dev mode should work as fast as
before even with 8.0.15. So it obviously has something to do with my
environment, configuration and/or code.
And also thank you for the reference to tomitribe. Unfortunately I'm
the only developer on this project, and it will be difficult to convince my
customer to an additional support subscription, because he on production
doesn't have issues ;-) But, ok, that's my problem, and maybe I'll consult
tomitribe in the future for other projects.
So, I'm afraid, for the near future I'm on my own to solve this
problem. Therefore any hints to restrict the places where I should take a
look will be more than welcome.
I'm a senior programmer with 20 years of experience in Java programming
(SE and JSP). But I'm relative new to JSF/JavaEE/JakartaEE and sometimes I
have a hard time to understand which component of the whole stack is
responsible for what.
The project meanwhile has over a 1/4 million lines of code (most of
them in the back-end, but also the front-end is big enough to not trace
through every lane if I want to get to the point in this life :-D ).
The application now runs for nearly 2 years on the customers site and
is very reliable and fast in its daily usage. Apart from occasional updates
every few month, it will never be restarted or need any manual maintenance
at all. So I assume the code is not the badest on earth. At least because
of that I'm able to out-rule things like memory leaks, gc issues or
bottlenecks (max Heap is never reached, neither half of it, even after
running for month).
Of course there could be aspects of JSF which I may not have understood
correctly until now. But because there are so many new things to a JSF
beginner like me, I'm running out of ideas what this could be. It is
something that worked well 'til TomEE 8.0.6 (Prod and Dev mode) and
suddenly don't work anymore on 8.0.12 in Dev mode (but still works great in
Prod mode). There are only minor versions in-between. So I think there were
no revolutionary changes anywhere. My hope was (and still is), that anybody
here on the list might have had a similar problem and has solved it, or
maybe someone knows about some changes in Dev mode which could explain such
behaviour (don't know, maybe xml parsing or component tree generation has
changed, or scope handling of managed beans, or whatever could cause some
code to be entered far more often than before, or some cache/pool was
removed or has different behaviour... such things). Then it would be far
more easy for me to track down the real problem.
Anyway, when I get some spare time (currently have some deadlines in
sight), I'll try to build a small test case. Either I can get a grip on the
issue myself on doing this, or I can supply it to anyone who might want to
have a look at it.
cu
Jens
Am 26.10.2023 um 14:01 schrieb Jonathan S. Fisher:
newer versions are so incredibly slow in dev mode
I can assure you that Dev/Prod mode works very very swiftly on 8.0.15
for sizable applications. For example, I have a giant application
(thousands of LOC, 50+ jsf views) that has sub-8ms response times
(minus database time). More than likely they are doing something they
should not be doing with JSF apis and are causing problems.
I would check the obvious things first with VisualVM: heap size, gc
frequency, etc. You can also run their profiler and see if you can
spot anything immediately obvious.
After that, the easiest way to locate the code slowing you down is
bisection. Cut half the code out, run, and continue cutting until you
can locate the problematic code. Then after that, isolate a test case
where flipping a boolean flag triggers the issue and post the results
here.
I would get ahold of: https://www.tomitribe.com who are literal
experts in this stuff. They offer professional services to handle
exactly these situations and can work directly in your codebase to
help you find and fix the problem.
On Thu, Oct 26, 2023 at 5:48 AM Jens Zurawski <[email protected]> wrote:
Hi altogether,
I'm new to this list and hope it's the right place to ask this
question.
If not, and someone know the right place to ask this, please give
advise.
I'm developing a big JSF Application for a customer. It's a long
running
project and development and when I started with it, TomEE 8.0.6 was
the
most recent Version of TomEE. The switch to Jakarta is planned for
next
year, so I'm still on the 8.x path for the time being and wasn't able
to
test if this problem still exists in the 9.x branch.
The problem:
On the customers site I'm with the latest TomEE version 8.0.15
(running
on Java 11) and everything works fine, because it is running in
production mode. But in my development environment I'm still stuck
with
8.0.6, because there I need the development mode
(javax.faces.PROJECT_STAGE: Development). I need to be able to see
changes in facelets without restarting everything everytime, and to
get
more detailed error messages.
My attempts to update my dev TomEE to something newer than 8.0.6 all
failed, because all (at least all I've tested so far) newer versions
are
so incredibly slow in dev mode, that it's unbearable to use the
application. Several very looong seconds on every request (even the
little AJAX requests in a view) is simply not a practical environment.
After switching to Production mode everything works very fast, and all
my views have response times of very few ms (even the big ones with
max.
around 400ms). When switching back to Development mode I have response
times of up to 30s on big views. Not with 8.0.6, there even in
development mode it's reasonable fast in not getting higher than 1s.
My question:
What causes this enormous performance degradation? I'm hoping, it is
just a configuration which now has another default value or the like.
If
yes, maybe someone can point me in the right direction of where to
find
this configuration? If it's not a configuration thing: what can I do
to
get around this?
I haven't tested all Versions of TomEE from 8.0.6 to 8.0.15, so I
can't
say at what version exactly this behaviour changes. If it helps or is
needed, I can make some tests to find the exact version where this
happens. Versions I've already tested are: 8.0.12, 8.0.13 and 8.0.15.
All of them are very slow in dev mode. If you need more information,
I'll try to provide it.
Thanks in advance for any help
cu
Jens
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