NB: In case it's relevant, I use IntelliJ almost exclusively for development of a Grails application, so my performance observations are limited to editing of Groovy files. I'm not sure but I do think that JDK 1.8 uses more RAM - however that shouldn't cause a slowdown as the machine has plenty of RAM to keep up with an increased use by IntelliJ.ĭoes this mirror the experience of others? Switching back to the other installation, which runs on JDK 1.6, and performance is again very good. Then I realized that my IntelliJ had been running really snappy on the JDK 1.6 but was really quite sluggish on JDK 1.8, possibly even more sluggish than 13.1 was on JDK 1.8! So I downloaded the version of 14 EAP with bundled JDK. You can determine which version of the JDK is the default by entering java -version in a Terminal window. There can be multiple JDKs installed on the macOS system. Then I thought, hey, why not upgrade to JDK 1.8, since the JDBC drivers which I have configured are for JDK 1.7 or higher so they don't work. Determining the Default JDK Version on macOS When starting a Java application through the command line, the system uses the default JDK. I've been using IntelliJ on MacOS with JDK 1.8 now without major issues (except for some poor performance.) but with the recent 14.0 EAP builds, I first downloaded the version without JDK - which installed and ran on JDK 1.6 on my Mac. It seems that the performance of IntelliJ on MacOS is much better with JDK 1.6, than with 1.8.
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May 2023
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