8169001: Remove launcher's built-in ergonomics

[Erik Joelsson]

Build changes look ok.

/Erik


On 2016-11-07 19:47, Kumar Srinivasan wrote:
>
> Hello,
>
> Please review the fix for:
> https://bugs.openjdk.java.net/browse/JDK-8169001
>
> Webrev at:
> http://cr.openjdk.java.net/~ksrini/8169001/webrev.00/
>
> Background:
>> Launcher ergonomics was introduced last decade to help determine
>> if the execution system is "Server Class", this was necessary to
>> choose server VM on platforms that supported both client and server
>> VMs (primarily for Solaris and Linux 32-bit).
>>
>> The algorithm involves computing and detecting the number of CPUs
>> and the amount of memory on the target system. All modern computers
>> systems with hyper-threading cause the ergonomics to choose server.
>>
>> JDK9 Platforms that have only server vm.
>>
>> ./linux-x64/lib/amd64/server/libjvm.so
>> ./linux-arm64-vfp-hflt/lib/aarch64/server/libjvm.so
>> ./solaris-sparcv9/lib/sparcv9/server/libjvm.so
>> ./solaris-x64/lib/amd64/server/libjvm.so
>> ./windows-x86/bin/server/jvm.dll
>> ./windows-x64/bin/server/jvm.dll
>>
>> JDK9 Platforms that have more than one vm variant:
>> ./linux-arm32-vfp-hflt/lib/arm/client/libjvm.so (default)
>> ./linux-arm32-vfp-hflt/lib/arm/minimal/libjvm.so
>>
>> ./linux-x86/lib/i386/server/libjvm.so (default)
>> ./linux-x86/lib/i386/minimal/libjvm.so
>>
>>
>> In the cases where multiple VMs are supported the ergnomics
>> has no effect, and the default platforms are chosen by the
>> jvm.cfg. Thus the launcher ergonomics is obsolete and redundant.
>
> Thanks
> Kumar
>