Hi,
I've noticed weird behavior with JDK1.1.7a (Suse 6.0) that I didn't see
with JDK 1.1.6: When doing the most basic system exec, and then reading
in the stdin, Java frequently hiccups, for a good second or two, usually
when garbage is collected.
I found this because I've written a port of GNU find to Java that is
cross-platform, but will detect when used on Linux or FreeBSD, and use
GNU tools if it can to speed things up. (
http://www.rule-of-eight.com/components/javafind ).
Here's a small class that demonstrates the problem by calling a command
that generates a lot of output. It doesn't hiccup as much as my Find
class does, but it still shows the effect:
-------
import java.io.*;
class SystemTest {
public static void main(String[] args) throws IOException {
Process p = Runtime.getRuntime().exec("/usr/bin/find /usr");
BufferedReader in = new BufferedReader(
new InputStreamReader(
p.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
}
}
-------
- Robb
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