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Re: [ide-dev] Interesting tweet about perfs


It may depend on your workbench.xmi size. For me a 750kB file could well benefit from a faster parser, but parsing is only one of many startup activities. I see an about 4s improvement in 28s loading from a RAM disk. Less clear whether many 1-5kB files benefit since EMF has a parser pool to try to avoid churning parsers.

Xtext is normally using a small number of XMI files of modest size so I wouldn't expect a significant overall speed up. However if you're using SysML with many large XMI files involved, that could be a very different matter.


Ed Willink

On 24/01/2019 15:26, Mickael Istria wrote:
Hi all,

Please have a look to . I have tried locally, and could also feel an improvement at startup (~1 minute turned into 30+ seconds, but it could be luck).
Can some of you please give it a try as well? Just add the suggested flag as -vmargs in eclipse.ini and compare startup time or other "measurable" operations with/without it.
If the results are generally positive, we should think of a strategy to pre-set this flag (and some other "factory" flags that have influence so early) in the IDE.

Mickael Istria
Eclipse IDE developer, for Red Hat Developers

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