Starting WebSphere in debug mode with JRebel’s non-legacy agent enabled is extremely slow. When using the old legacy agent it takes about 5 minutes (without JRebel it’s 4 minutes, so that’s okay), but with the “new” agent it takes twice as long.
I’m using JRebel 7.0.7 and WebSphere 18.104.22.168. When measuring the startup times, I had no debug breakpoints set and even enabled “Skip all breakpoints” in Eclipse.
How can I fix this?
Thanks a lot for letting us know! Delay is indeed oddly big! Could you please send your trace and performance level jrebel.log file after reproducing the issue to email@example.com with the link to this forum topic? To generate it just add -Drebel.log=trace -Drebel.log.dump_stack_traces=10 -Drebel.log.perf=true to your VM arguments, restart your server and reproduce the issue.
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