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Sets the prefetch instruction to prefetch ahead of the allocation pointer. Only the Java HotSpot Server VM supports this option. Possible values are from 0 to three. The particular instructions driving the values depend upon the platform. By default, the prefetch instruction is about to 0:

Sets The proportion with the heap (0 to 50) that’s reserved being a Bogus ceiling to reduce the potential for advertising failure to the G1 collector. If you raise or minimize The share, make certain that you change the total Java heap by the exact same sum. By default, this feature is ready to 10%.

Can be utilized anywhere around the command line, such as in an argument file, to prevent further more @filename expansion. This feature stops expanding @argfiles following the option.

Should the argument is NaN or less than zero, then the result is NaN. In the event the argument is favourable infinity, then The end result is optimistic infinity. If the argument is beneficial zero or detrimental zero, then The end result is adverse infinity.

If your argument is NaN, The end result is NaN. Should the argument is optimistic infinity, then the result is beneficial infinity. In case the argument is adverse infinity, then The end result is beneficial zero.

Disables the try to established the soft limit for the number of open up file descriptors on the challenging limit. By default, this feature is enabled on all platforms, but is ignored on Windows.

Permits issuing of membars on thread-point out transitions. This feature is disabled by default on all platforms except ARM servers, the place it’s enabled. (It’s advised you don’t disable this option on ARM servers.)

scalb(double d, int scaleFactor) Return d × 2scaleFactor rounded as if executed by one properly rounded floating-issue multiply to some member from the double worth established.

Sets a concentrate on value for the desired most pause time. The default price is 200 milliseconds. The desired price doesn’t adapt to your heap size.

Enables the use of huge page memory. By default, this selection is disabled and large website page memory isn’t employed.

Allows invoking of concurrent GC by utilizing the System.gc() ask for and unloading my link of classes in the course of the concurrent GC cycle. This feature is disabled by default and will be image source enabled only together with the -XX:+UseConcMarkSweepGC possibility.

This can be a industrial feature that requires you to definitely also specify the -XX:+UnlockCommercialFeatures selection. This is also an experimental element; it may well modify in foreseeable future releases.

Sets a customized command or simply a series of semicolon-divided instructions to run when an OutOfMemoryError exception is initial thrown. Should the string is made up of Areas, then it needs to be enclosed in quotation marks. For an example of a command string, see the description with the -XX:OnError solution.

If the argument is good zero or damaging zero, The end result is optimistic zero. If your argument is infinite, The end result is favourable infinity. this If your argument is NaN, the result is NaN.

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