Hi Dmitry!
Tapestry since 5.3 minify css and js on a fly. That's why your cpu hits
100%, at startup when tapestry warm up resources on first request and when
your site has low traffic.
A workaround to solve this problem is disable this feature.
Take a look at your AppModule in
@Contribute(ResourceMinimizer.class)
public static void
contributeMinimizers(MappedConfiguration<String, ResourceMinimizer>
configuration) {}
You can implement your own minimizer or just disable it. I prefer minify my
resources at deploy time. It's recommended if you have to warm up a lot of
apps hosted on the same server.
Cheers,
Diego
El jue., 16 may. 2019 a las 4:59, Dmitry Gusev (<dmitry.gu...@gmail.com>)
escribió:
> Hi,
>
> I'd also try to collect thread dump when you see this happening to get an
> idea where the CPU is wasted.
>
> On Thu, May 16, 2019 at 10:38 AM Mats Andersson <mats.anders...@ronsoft.se
> >
> wrote:
>
> > Do you have some scheduled services that could eat memory? I would
> > suspect that the garbage collector is using most of that CPU. Monitor
> > the GC and how memory is used over time. Maybe there is a mismatch
> > between the memory configurations in Docker and the JVM.
> >
> > It seems like it is repeatable, that is good for troubleshooting at
> least.
> >
> > Mats
> >
> >
> > On 2019-05-16 03:33, JumpStart wrote:
> > > Hi all,
> > >
> > > My app is working brilliantly under load, but after a quiet time it can
> > be very slow to respond, leading our first user of the day to tap the
> same
> > thing multiple times, and the next thing you know is CPU hits 100% and is
> > stuck there, and none of those requests returns a response. Nor do any
> new
> > requests return a response. Apache logs show that all the requests time
> out
> > after 60 secs, unanswered, and the health checkers start messaging the
> > support staff.
> > >
> > > Has anyone else experienced this kind of thing?
> > >
> > > Perhaps it’s something to do with our infrastructure? We’re running
> > Tapestry from an EAR in Wildfly in Docker in an AWS EC2 instance. Also in
> > that EC2 instance is Apache HTTPD in Docker.
> > >
> > > Any thoughts, please! It’s a crazy problem.
> > >
> > > Cheers,
> > >
> > > Geoff
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
> > > For additional commands, e-mail: users-h...@tapestry.apache.org
> > >
> > --
> > ---------------------- Mats Andersson | Ronsoft AB | +46(0)73 368 79 82
> >
> >
>
> --
> Dmitry Gusev
>
> AnjLab Team
> http://anjlab.com
>
