Idea modifying JVM memory

IDEA modify jvm Memory ( What we use here is IDEA 2022 edition )

open idea On the menu bar Help Click on the Edit Custom VM Options... You can see the open file idea64.exe.vmoptions

take idea64.exe.vmoptions The internal content is modified to

-Xms500m
-Xmx4096m
-XX:ReservedCodeCacheSize=512m
-XX:+UseG1GC
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:CICompilerCount=2
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
-ea
-Dsun.io.useCanonCaches=false
-Djdk.http.auth.tunneling.disabledSchemes=""
-Djdk.attach.allowAttachSelf=true
-Djdk.module.illegalAccess.silent=true
-Dkotlinx.coroutines.debug=off

-Xms128m, 16 G Memory of the machine can try to set to -Xms500m
( Sets the initial memory count , Increasing this value can increase Java The startup speed of the program . )
-Xmx750m, 16 G Memory of the machine can try to set to -Xmx4096m
( Set the maximum amount of memory , To improve the value , You can reduce memory Garage Frequency of collection , Improve program performance )
-XX:ReservedCodeCacheSize=240m, 16G Memory of the machine can try to set to
-XX:ReservedCodeCacheSize=512m ( Reserve the memory capacity of the code )

Set and restart idea You can see that the parameter is modified successfully

The above method is invalid after setting

Find... In the environment variable IEDA_VM_OPTIONS Find the value of the variable , Copy

Locate the file in file explorer and open , Modify the parameters again , Restart after idea that will do