Re: [m2e-users] m2e memory usage

[Igor Fedorenko <igor@xxxxxxxxxxxxxx>]

Are these instance counts or amount of heap held by the instances? What
holds this stuff in memory (profilers usually let you see path to GC root)?

--
Regards,
Igor


On 12-02-21 6:11 AM, Björn Weinbrenner wrote:
> Igor Fedorenko<igor<at>  ifedorenko.com>  writes:
>
> > If memory usage increases over time, this means you likely have a memory
> > leak and your Eclipse will run out of memory sooner or later. I'd
> > investigate this with a profiler first.
>
> Hello Igor!
>
> I profiled Eclipse with the JProfiler. I saw that there is a huge amount of
> instances of org.sonatype.aether packages. Examples:
>
> org.sonatype.aether.util.artifact.DefaultArtifact   320.936
> org.sonatype.aether.graph.Dependency                319.204
> org.sonatype.aether.graph.Exclusion                 766.653
>
> It seems to me that these counts are very high. Is the complete dependency
> graph hold in every project although parts of the graph are the same for
> several projects? Couldn't these instances be shared if they refer to the
> same thing (artifact, dependency...) in maven?
>
> Best regards
> Björn
>
> > I think m2e memory footprint can be optimized at the expanse of some
> > performance loss. If you submit a quality patch backed by reasonably
> > detailed analysis of before and after memory consumption and performance
> > implications, I'd be willing to review it. But, quite frankly, 1G for an
> > eclipse instance does not look terribly huge amount for RAM, given that
> > 8G kit can be had for<50 bucks now.
> >
> > --
> > Regards,
> > Igor
> >
> > On 12-02-17 5:28 AM, Björn Weinbrenner wrote:
> > > Igor Fedorenko<igor<at>   ifedorenko.com>   writes:
> > >
> > > > What m2e version do you use and how many workspace projects do you have?
> > > >
> > > > m2e 1.0 needs about 2M for each workspace project, so 500M seems like
> > > > too much. I'd recommend using a profiler to see what uses all that memory.
> > > >
> > > > --
> > > > Regards,
> > > > Igor
> > > >
> > > > On 11-07-27 10:16 AM, Konrad Garus wrote:
> > > > > I've been using m2e for a while and constantly fought problems with
> > > > > memory. I decided to measure it and discovered that without m2e
> > > > > Eclipse for my workspace needs about 500 MB, while with m2e it's
> > > > > _twice_ as much. That's only after opening the workspace, before I
> > > > > change any files or compile!
> > > > >
> > > > > What can I do to decrease memory impact of m2e? I don't care about
> > > > > anything but build path&    dependency management.
> > >
> > > Hi!
> > >
> > > If you are right and each eclipse m2e project needs 2MB I may have a
>   problem.
> > > Actually we have 167 (!) projects in the workspace. With mvn eclipse:eclipse
> > > this is ok, eclipse needs about 450-500 MB (I looked up the usage with the
>   MS
> > > Windows Taskmanager). With m2e eclipse uses more than 730 MB. In both cases
>   the
> > > usage increases while working, thus with m2e eclipse needs something more
> than 1
> > > GB which is too much for our environment (local XP workstation with jboss,
>   db
> > > tool, browser etc.).
> > > Does it mean that m2e isn't recommended for such a big amount of projects?
> > > Best regards
> > > Björn
> > >
> > >
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