The -Xmaxjitcodesize flag is incorrectly documented e.g.

https://docs.oracle.com/javase/8/docs/technotes/tools/unix/java.html

-Xmaxjitcodesize=size

    Specifies the maximum code cache size (in bytes) for JIT-compiled code. Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, g or G to indicate gigabytes. The default maximum code cache size is 240 MB; if you disable tiered compilation with the option -XX:-TieredCompilation, then the default size is 48 MB:

    -Xmaxjitcodesize=240m

    This option is equivalent to -XX:ReservedCodeCacheSize.
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In fact this option does not take an equal sign and is used as:

   -Xmaxjitcodesize240m

This should be fixed