FreeBSD vs Windows 2000 "Advanced" Server
Sheldon Hearn
sheldonh at starjuice.net
Thu Aug 28 02:08:55 PDT 2003
On (2003/08/28 11:05), Sheldon Hearn wrote:
> The test class at the bottom of this message can fire about 1,800 [1]
> threads on my FreeBSD 5.1-CURRENT box, with the native jdk-1.4.1. My
> box is a PIII with 1G of RAM.
Oops, make that about 8,000 threads. :-)
And I forgot to include the class source.
Ciao,
Sheldon.
public class TestThreads extends Thread
{
private long sleepMillis;
public TestThreads(long sleepMillis)
{
this.sleepMillis = sleepMillis;
}
public void run()
{
try {
Thread.sleep(sleepMillis);
} catch (InterruptedException e) {
}
}
public static void main(String[] args)
{
int threadCount = 0;
long sleepMillis = 0;
try {
threadCount = new Integer(args[0]).intValue();
sleepMillis = new Long(args[1]).longValue();
} catch (Exception e) {
usage();
}
int i = 0;
try {
for (i = 0; i < threadCount; i++) {
TestThreads test = new TestThreads(sleepMillis);
test.start();
}
System.out.println( "TestThreads: successfully fired " +
threadCount + " threads" );
} catch (OutOfMemoryError e) {
System.out.println("TestThreads: after creating " +
i + " threads: " + e.getMessage());
}
try {
Thread.sleep(sleepMillis);
System.out.println("TestThreads: waited " + sleepMillis +
" milliseconds for all threads to complete");
} catch (InterruptedException e) {
}
}
private static void usage()
{
System.err.println("usage: TestThreads threadCount sleepMillis");
System.exit(1);
}
}
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