3 ms·

While annoying, all intellij EAPs (early access previews) are very cpu intensive, as they run in debug mode by default to create diagnostics and crash reports.

by sod 4y ago

While annoying, all intellij EAPs (early access previews) are very cpu intensive, as they run in debug mode by default to create diagnostics and crash reports. Kinda similar like if you would keep the debugger open in your browser. Not sure if you can disable it, but thats the main reason why I stopped using EAPs for work. But the ram is typical intellij, they take what they can get from the OS :)

Bishonen88 4y ago
any source on that claim? I.e. that eap are cpu intensive?
- sod 4y ago
  I can't find a source to my claim. Just now downloaded webstorm 2022.2.3 stable and webstorm 2022.3 EAP to compare, but they seem to behave similar in cpu. Every now and then in the EAP in the activity monitor a "diagnostics dumper" pops up, but only for a brief moment. Maybe they improved it a lot. I remember complaining about EAP performance a long time ago and remembered an answer to expect a few more cpu usage from an EAP (the diff was not as stark as 100% though, it was more like 20% EAP vs 5% stable). I mean please don't judge the CPU profile of an EAP to the final product.
- lemming 4y ago
  I don't have a source other than that I develop plugins for IntelliJ professionally, but it's definitely true that performance is generally not a focus earlier in EAP cycles. I think they mention it when you download an EAP release.
zepearl 4y ago
> But the ram is typical intellij, they take what they can get from the OS :) Aha, thanks! I was wondering about that (using CLion 2021.3 with Rust plugin with currently a tiny test project open, currently using 2.3 GiB RAM, puah)... .
- kaba0 4y ago
  Well, they cache many things to make code analysis fast, so they are one of the few softwares that do make good use of memory. Some older version had very low heap size set and that can cause slow downs, so 2+ GB is recommended at least in my experience.
  - 8n4vidtmkvmk 4y ago
    i give intellij about 10GB to play with. i don't care. im not using it fot anything else. cache away. will happily trade ram for speed
dixie_land 4y ago
> they take what they can get from the OS : It's the opposite, they run in JVM so there's an upper bound at around -Xmx ("around" because you still have stack allocated and JNI allocated, but heap is usually the biggest pool of memory by a large margin) on the flip side it also has a lower bound at -Xms Personally I have mine running with 16/32G heap. It's my work computer not like I need the 64G ram for gaming :)

by sod 4y ago

Bishonen88 4y ago

any source on that claim? I.e. that eap are cpu intensive?

sod 4y ago
I can't find a source to my claim. Just now downloaded webstorm 2022.2.3 stable and webstorm 2022.3 EAP to compare, but they seem to behave similar in cpu. Every now and then in the EAP in the activity monitor a "diagnostics dumper" pops up, but only for a brief moment. Maybe they improved it a lot. I remember complaining about EAP performance a long time ago and remembered an answer to expect a few more cpu usage from an EAP (the diff was not as stark as 100% though, it was more like 20% EAP vs 5% stable). I mean please don't judge the CPU profile of an EAP to the final product.
lemming 4y ago
I don't have a source other than that I develop plugins for IntelliJ professionally, but it's definitely true that performance is generally not a focus earlier in EAP cycles. I think they mention it when you download an EAP release.

zepearl 4y ago

> But the ram is typical intellij, they take what they can get from the OS :) Aha, thanks! I was wondering about that (using CLion 2021.3 with Rust plugin with currently a tiny test project open, currently using 2.3 GiB RAM, puah)... .

kaba0 4y ago
Well, they cache many things to make code analysis fast, so they are one of the few softwares that do make good use of memory. Some older version had very low heap size set and that can cause slow downs, so 2+ GB is recommended at least in my experience.
- 8n4vidtmkvmk 4y ago
  i give intellij about 10GB to play with. i don't care. im not using it fot anything else. cache away. will happily trade ram for speed

dixie_land 4y ago

> they take what they can get from the OS : It's the opposite, they run in JVM so there's an upper bound at around -Xmx ("around" because you still have stack allocated and JNI allocated, but heap is usually the biggest pool of memory by a large margin) on the flip side it also has a lower bound at -Xms Personally I have mine running with 16/32G heap. It's my work computer not like I need the 64G ram for gaming :)