Allows tracing of your loader constraints recording. By default, this option is disabled and loader constraints recording isn't traced.If the option -agentlib:foo is specified, then the JVM makes an attempt to load the library named foo.dll in The situation specified by the PATH process variable.
Sets the volume of compiler threads to use for compilation. By default, the number of threads is ready to 2 with the server JVM, to 1 for that client JVM, and it scales to the volume of cores if tiered compilation is utilised. The following illustration displays the best way to established the amount of threads to two:
Sets the Original dimension (in bytes) on the memory allocation pool. This price have to be possibly 0, or maybe a numerous of 1024 and increased than 1 MB. Append the letter k or K to indicate kilobytes, m or M to point megabytes, g or G to indicate gigabytes.
Sets the prefetch instruction to prefetch ahead of the allocation pointer. Just the Java HotSpot Server VM supports this feature. Attainable values are from 0 to 3. The particular Directions behind the values count on the System. By default, the prefetch instruction is set to 0:
Permits using the occupancy benefit as the sole criterion for initiating the CMS collector. By default, this feature is disabled as well as other criteria may very well be employed.
Sets the file to which verbose GC functions facts must be redirected for logging. The information published to this file is comparable for the output of -verbose:gc Along with the time elapsed given that the initial GC celebration previous Each individual logged event. The -Xloggc solution overrides -verbose:gc if both of those are find more info offered Using the exact same java command.
The default price is ready to 500 KB. The First code cache dimension need to be not fewer than the program's nominal memory website page size. The subsequent case in point demonstrates the way to set the First code cache sizing to 32 KB:
Specifies whether a dump file of JFR data must be produced if the JVM terminates in a managed way. By default, this parameter is about to Bogus (dump file on exit isn't generated). To empower it, established the parameter to correct.
This selection incorporates a Restrict of 2 GB; normally, an error is created. The most code cache dimension really should not be lower than the First code cache dimension; see the choice -XX:InitialCodeCacheSize. This option is equivalent to -Xmaxjitcodesize.
Specifies the for every-thread regional buffer measurement (in bytes). Append k or K, to specify the dimensions in KB, m or M to specify the dimensions in MB, g or G to specify the scale in GB.
Simply because our application will likely be a "simple outdated Java software", we don't require any navigate here extra technologies to be supported. So, You should not pick out any of the choices beneath More Libraries and Frameworks.
This selection was deprecated in JDK 8, and verification is now split by default without a strategy to disable it.
Sets the amount of interpreted strategy invocations before compilation. By default, from the server JVM, the JIT compiler performs 10,000 interpreted technique invocations to assemble info for productive compilation.