Package: gcj-jdk
Version: 4:4.7.2-1
Severity: normal
Number of processors/cores/threads returned by a java program compiled with gcj
is incorrect:
folkert@belle:~$ cat numprocs.java
class numprocs {
public static void main(String [] args) {
System.out.println("number of processors: " +
Runtime.getRuntime().availableProcessors());
}
}
folkert@belle:~$ gcj --version
gcj (Debian 4.8.1-2) 4.8.1
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
folkert@belle:~$ gcj --main=numprocs -o numprocs numprocs.java
folkert@belle:~$ ./numprocs
number of processors: 1
folkert@belle:~$ java -version
java version "1.7.0_03"
OpenJDK Runtime Environment (IcedTea7 2.1.3) (7u3-2.1.3-1)
OpenJDK 64-Bit Server VM (build 22.0-b10, mixed mode)
folkert@belle:~$ javac numprocs.java
folkert@belle:~$ java numprocs
number of processors: 12
folkert@belle:~$ grep -c '^processor *:' /proc/cpuinfo
12
-- System Information:
Debian Release: 7.0
APT prefers testing
APT policy: (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.9-1-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages gcj-jdk depends on:
ii gcj-4.7-jdk 4.7.2-3 gcj and classpath development tool
ii gcj-jre 4:4.7.2-1 Java runtime environment using GIJ
ii libgcj-common 1:4.6.3-8 Java runtime library (common files
gcj-jdk recommends no packages.
gcj-jdk suggests no packages.
-- no debconf information
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