JGit garbage collection is slow

[Phillipus]

More of a heads up than bug report.

I hit "Refresh" (Pull) and the dialog was stuck for a long time. A debug trace showed that JGit was garbage collecting. Very slowly. I let it do its thing and it got there in the end. This was with JGit 4.11 and 5.3.0.

[janesser]

@Phillipus hi, "same procedure as every year" i tend to code a little. On the one hand getting a confined eclipse snap to work, which is no matter for here. Let me say, that i saw a lot good from you in the eclipse community.

On the other hand, i've been trying to poc my thoughts about getting around of jgit/egit, which have a lot of impact on my day2day. Especially because of slowness, see the other thread earlier: archimatetool/archi-modelrepository-plugin2#11 (comment)

How has your idea evolved in the meanwhile - is coArchi2 the (only) way to go ? IIRC git would not be on the shortlist of sharing platforms with some mixed implications.

My simple (maybe naive) proposal was started here: eclipse-egit/egit#47
Basically wrapping around git-cli which is most optimized.

There is nothing but trying here:
janesser@347874f
janesser@58c1a44

Your reply would be very welcome. Cheers.

[Phillipus]

Hi, this issue is about the possibility of JGit being slow when garbage collecting. Let's keep it to that.

However:

• coArchi 2 will be continued and I will not be adding any more to coArchi 1 - see Why coArchi 2?
• coArchi 1 is slow not because it uses JGit but because of all the thousands of XML files it creates.
• We don't use EGit at all, only JGit. EGit is an Eclipse UI plug-in that uses JGit as the backend. We will only use JGit in coArchi 2.

[janesser]

@Phillipus cool. i guess with a smaller set of files jgit gc will be less greedy.
let me know if i there is anything on coArchi 2 where a little contribution would help.

sorry for being the stubborn one;
anyway i will continue my kata attempting to show that a non-java integration of git deserves at least a little more consideration.

p.s. just looking through credential handling in coarchi and how the git-cli offers helpers. that is a descent puzzle to keep me busy.