Source: openjdk-8 Severity: wishlist Tags: patch User: debian-sp...@lists.debian.org Usertags: sparc64
Dear Maintainer, The openjdk-8 packages for sparc64 are currently configured to use the zero interpreter. This works fine but I wanted to find out what was blocking the use of the much faster hotspot compiler. Fortunately I found that simply enabling hotspot for sparc64 in the debian/rules file allows a sparc64 hotspot jvm to build. I used the current debian openjdk-8 as the bootstrap jvm. Here are the changes I made to the debian/rules file: --- openjdk-8-8u102-b14.1/debian/rules 2016-08-06 03:12:09.000000000 -0500 +++ openjdk-8-8u102-b14.1-hotspot/debian/rules 2016-08-26 09:00:27.932659521 -0500 @@ -39,7 +39,7 @@ multiarch_dir = /$(DEB_HOST_MULTIARCH) -hotspot_archs = amd64 i386 arm64 ppc64 ppc64el kfreebsd-amd64 kfreebsd-i386 +hotspot_archs = amd64 i386 arm64 ppc64 ppc64el kfreebsd-amd64 kfreebsd-i386 sparc64 # FIXME: use bootcycle builds for zero archs? bootcycle_build = $(if $(filter $(DEB_HOST_ARCH), $(hotspot_archs)),yes) ifneq ($(DEB_HOST_ARCH),$(DEB_BUILD_ARCH)) @@ -164,7 +164,7 @@ # Shark build but just crash altshark_archs = -altzero_archs = $(filter-out sparc sparc64, $(hotspot_archs)) $(altshark_archs) +altzero_archs = $(filter-out sparc, $(hotspot_archs)) $(altshark_archs) ifeq (,$(filter noaltcacao, $(DEB_BUILD_OPTIONS))) ifneq (,$(filter $(DEB_HOST_ARCH), $(cacao_archs))) Here's the output of java -version for the current zero jvm: OpenJDK Runtime Environment (build 1.8.0_102-8u102-b14.1-2-b14) OpenJDK 64-Bit Zero VM (build 25.102-b14, interpreted mode) And here's the output for the newly built hotspot jvm: OpenJDK Runtime Environment (build 1.8.0_102-8u102-b14.1-2-b14) OpenJDK 64-Bit Server VM (build 25.102-b14, mixed mode) I tested the hotspot jvm with several applications and it seemed to work fine and was noticeably faster. -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: sparc64 Kernel: Linux 4.6.0-1-sparc64-smp (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)