Sets the Original and greatest measurement (in bytes) in the heap to the youthful era (nursery). Append the letter k or K to indicate kilobytes, m or M to point megabytes, or g or G to point gigabytes. The younger era region of the heap is utilized for new objects. GC is performed In this particular location extra normally than in other areas. If the dimensions for your youthful era is simply too modest, then loads of minimal garbage collections are performed.
Sets a tailor made command or even a number of semicolon-divided instructions to run when an OutOfMemoryError exception is to start with thrown. If your string contains spaces, then it needs to be enclosed in quotation marks. For an example of a command string, see the description with the -XX:OnError alternative.
Identifies String objects reaching the specified age which might be regarded candidates for deduplication. An item's age can be a measure of how many times it's got survived rubbish selection. This is sometimes often called tenuring. See the -XX:+PrintTenuringDistribution alternative.
Enables the usage of massive webpage memory. By default, this feature is disabled and huge website page memory isn’t applied.
Sets the quantity of threads employed for concurrent GC. Sets threads to close to 1/4 of the number of parallel rubbish selection threads. The default worth will depend on the volume of CPUs available to the JVM.
Sets The share in the aged era occupancy (0 to one hundred) at which to start out a CMS collection cycle. The default benefit is ready to -1. Any adverse price (including the default) indicates that the choice -XX:CMSTriggerRatio is accustomed to outline the value from the initiating occupancy fraction.
This is the look at here now commercial aspect that needs you to definitely also specify the -XX:+UnlockCommercialFeatures option as follows:
Logging messages are decorated with information about the information. You are able to configure Just about every output to implement a customized list of decorators.
The next ways demonstrate how to make a typical archive that could be shared by various apps. Only the click reference classes from common.
If the size is simply too substantial, then only entire GCs are performed, which might acquire quite a long time to accomplish. Oracle recommends which you retain the size to the youthful generation better than twenty five% and lower than 50% of the general heap dimensions.
Append the letter k or K to point kilobytes, m or M to indicate megabytes, or g or G to indicate gigabytes. The default benefit is selected see this at operate time based on the method configuration.
The consumer could invoke the other knowledge model through the use of these launcher choices. Oracle Solaris was the sole platform supporting these selections, and also the 32-little bit JDKs/JREs are no longer supported.
Specifies whether thread sampling is enabled. Thread sampling happens only if the sampling event is enabled together with this parameter. By default, this parameter is enabled.
Logs messages tagged Along with the gc tag using the trace stage to some rotating file set with five data files with size one MB with the base title gctrace.txt and works by using decorations uptimemillis and pid.