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jsvc has a -client option but it isn't available on my system:

/usr/bin/jsvc -help ...
...
    -jvm <JVM name>
        use a specific Java Virtual Machine. Available JVMs:
            'server'
    -client
        use a client Java Virtual Machine.
    -server
        use a server Java Virtual Machine.
...

This seem to boil down to having library files in directory lib/client under JAVA_HOME -- but all I have is lib/server.

This directory does not exist on Arch Linux ARM aarch64 or macOS. Is that some separate install, or is jsvc simply wrong about the existence of such a VM in that place?

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  • 1
    It was an ancient option that (when it did anything) was impactful on primarily 32-bit platforms (machines with less than 2 GB of RAM). Commented Dec 2, 2022 at 0:29
  • 1
    Look here: stackoverflow.com/a/198651/421195 Because on the 64-bit versions of JDK the -client option is ignored for many years. – G. Demecki Mar 16, 2016 Commented Dec 2, 2022 at 2:04
  • I guess my second theory was correct :-) Ty. Commented Dec 2, 2022 at 5:07

1 Answer 1

Reset to default
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This is a lab box I haven't updated for awhile ... but it looks like recent JREs only have the "server" option:

C:\> java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

c:\>java -help
Usage: java [-options] class [args...]
           (to execute a class)
   or  java [-options] -jar jarfile [args...]
           (to execute a jar file)
where options include:
    -d32          use a 32-bit data model if available
    -d64          use a 64-bit data model if available
    -server       to select the "server" VM
                  The default VM is server.

Also:

c:\Program Files\java\jdk-11.0.1>tree lib
Folder PATH listing for volume OS
Volume serial number is 00000051 4C32:5A1F
C:\PROGRAM FILES\JAVA\JDK-11.0.1\LIB
├───jfr
├───security
└───server
  <= Look Ma!  No "client"!
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