[google-appengine] cpu usage for getPersistenceManager?
Included is the source of my entire servlet. When I run this servlet
it says that I am using as much as
{"totalCpu":3671926.97333,"pmCpu":3671926.97333}
And to back up this my logs are telling me I am using a high amount of
CPU ( > 4600cpu_ms) and may soon exceed my quota. .
In any case am I doing something wrong? It seems that if I am nearing
my max quota just getting the PersistenceManager then something is
just not right.
I am not a paying user yet if that makes a difference.
Any clues for a newbie?
Thanks,
package reminder;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.jdo.PersistenceManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.simple.JSONObject;
import com.google.appengine.api.quota.QuotaService;
import com.google.appengine.api.quota.QuotaServiceFactory;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
public class NoopServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
private static final Logger log =
Logger.getLogger(NoopServlet.class.getName());
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse
resp)
throws ServletException, IOException {
QuotaService qs = QuotaServiceFactory.getQuotaService();
long start = qs.getCpuTimeInMegaCycles();
JSONObject obj = new JSONObject();
SubqUser sUser = null;
start = qs.getCpuTimeInMegaCycles();
PersistenceManager pm = PMF.get().getPersistenceManager();
long end = qs.getCpuTimeInMegaCycles();
double cpuSeconds = qs.convertMegacyclesToCpuSeconds(end -
start);
obj.put("pmCpu", cpuSeconds);
cpuSeconds = qs.convertMegacyclesToCpuSeconds(end - start);
obj.put("totalCpu", cpuSeconds);
System.out.println(this.getClass().getName()+" used " +
cpuSeconds+ " cpu seconds");
resp.getWriter().print(obj.toJSONString());
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse
resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(req, resp);
}
}
package reminder;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory("transactions-
optional");
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
}
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