patch_search.java

import sun.awt.AppContext;
import javax.print.PrintServiceLookup;

public class SlowPrinting {

    // Refresh interval in seconds
    public static int CUPS_REFRESH_INTERVAL = 30;

    public static void main(String ... args) {
        int count = 0;
        long delta = 0;
        int delayCount = 0;
        while (true) {
            count++;

            long time1 = System.currentTimeMillis();

            //If either line is commented out, the program will run full speed
            if ((time1 - delta)/1000 > CUPS_REFRESH_INTERVAL) {
                delta = time1;
                delayCount++;
                System.out.println("Attempt " + delayCount + " refreshing printer listing... ");
                AppContext.getAppContext().put(PrintServiceLookup.class.getDeclaredClasses()[0], null);
            }

            PrintServiceLookup.lookupPrintServices(null, null);

            long time2 = System.currentTimeMillis();
            if (time2 - time1 > 100) {
                System.out.println((time2 - time1)/1000.0f + " delay detected on try #" + count+ ".");
            }
        }
    }
}