How to configure direct_max_in_bytes

[randomnamegenerator]

Hello All,

I am wanting to adjust the direct_max_in_bytes value , the documentation I have read deals with how adjust the jvm heap size but not the off heap size?

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Important Elasticsearch configuration | Elasticsearch Guide [8.12] | Elastic

If anyone can advise that would be greatly appreciated.

[randomnamegenerator]

Just to add more context, this is running in windows with the elasticservice,

from the elasticsearch manager I have adjusted the XX:MaxDirectMemorySize value but it doesnt have any affect on the "direct_max_in_bytes" value that I see when running Get _Nodes/_all/jvm

      },
      "jvm" : {
        "pid" : 1408,
        "version" : "16.0.2",
        "vm_name" : "OpenJDK 64-Bit Server VM",
        "vm_version" : "16.0.2+7",
        "vm_vendor" : "Eclipse Foundation",
        "bundled_jdk" : true,
        "using_bundled_jdk" : true,
        "start_time_in_millis" : 1710772170660,
        "mem" : {
          "heap_init_in_bytes" : 12582912000,
          "heap_max_in_bytes" : 12582912000,
          "non_heap_init_in_bytes" : 7667712,
          "non_heap_max_in_bytes" : 0,
          "direct_max_in_bytes" : 0
        },
        "gc_collectors" : [
          "G1 Young Generation",
          "G1 Old Generation"
        ],
        "memory_pools" : [
          "CodeHeap 'non-nmethods'",
          "Metaspace",
          "CodeHeap 'profiled nmethods'",
          "Compressed Class Space",
          "G1 Eden Space",
          "G1 Old Gen",
          "G1 Survivor Space",
          "CodeHeap 'non-profiled nmethods'"
        ],
        "using_compressed_ordinary_object_pointers" : "true",
        "input_arguments" : [
          "-Xms12g",
          "-Xmx12g",
          "-XX:MaxDirectMemorySize=12582912000",

Do I need to reboot the system or restart a service other than the elasticsearch windows service?