Javaws application is taking long time to launch - eclipse

I am running javaws application on windows 7 professional with java 1.7u21 it is taking a very long time greater than 1 minute , even launching application is taking a long time about 40 sec means org.eclipse.equinox.launcher.main is using high cpu and taking long time.
As analysed org.eclipse.equinox.launcher.main method is taking much time
Tomcat is also taking very long time even meta-complete is true so scanning is off.
.
Does anyone know why the application is taking such a long time?

I've had a similar issue with webstarting an Eclipse application on Windows. It turned out that the Java system property "user.home" was set to a network drive, this is a known bug. The Eclipse webstart example jnlp's are configured to install the application below the user.home folder. This can take a very long time on a network drive. I solved the issue by creating a custom class WebStartLauncher with a main method that sets user.home to %LOCALAPPDATA% before passing control to the normal Eclipse WebStartMain:
public static void main(String[] args) {
String userProfile = System.getenv("LOCALAPPDATA");
if (userProfile != null) {
System.setProperty("user.home", userProfile);
}
WebStartMain.main(args);
}

Related

Anylogic, using different time unit

I'm having an issue configuring passing time on an Anylogic model: I would like to configure every tick of the model time to be 5 minutes at 1x.
To be clearer, all the things I did were done on the project components shown on the "Projects" tab.
Reading guides and manuals I saw that by clicking on the project root I could configure the time unit in minutes, and this allows me to run it with 1 minute per tick.
I tried to modify the Simulation options setting the "Real-time with scale" at 5, but when I run the experiment it automatically starts at 5x.
Is there any way to achieve my needing?
Thanks a lot.
P
No matter what, the best option to control this, is by doing it programmatically.
getEngine().setRealTimeMode(true); // to be sure you are not using virtual mode
getEngine().setRealTimeScale(5); // 5 would be the 5x, otherwise put a different number
For instance, you can run this at 1x when your model starts (on your "on startup" action on your main properties) and with a button, or after some time, you can change it to whatever you want.

MS-MPI MPI_Barrier: sometimes hangs indefinitely, sometimes doesn't

I'm using the MPI.NET library, and I've recently moved my application to a bigger cluster (more COMPUTE-NODES). I've started seeing various collective functions hang indefinitely, but only sometimes. About half the time a job will complete, the rest of the time it'll hang. I've seen it happen with Scatter, Broadcast, and Barrier.
I've put a MPI.Communicator.world.Barrier() call (MPI.NET) at the start of the application, and created trace logs (using the MPIEXEC.exe /trace switch).
C# code snippet:
static void Main(string[] args)
{
var hostName = System.Environment.MachineName;
Logger.Trace($"Program.Main entered on {hostName}");
string[] mpiArgs = null;
MPI.Environment myEnvironment = null;
try
{
Logger.Trace($"Trying to instantiated on MPI.Environment on {hostName}. Is currently initialized? {MPI.Environment.Initialized}");
myEnvironment = new MPI.Environment(ref mpiArgs);
Logger.Trace($"Is currently initialized?{MPI.Environment.Initialized}. {hostName} is waiting at Barrier... ");
Communicator.world.Barrier(); // CODE HANGS HERE!
Logger.Trace($"{hostName} is past Barrier");
}
catch (Exception envEx)
{
Logger.Error(envEx, "Could not instantiate MPI.Environment object");
}
// rest of implementation here...
}
I can see the msmpi.dll's MPI_Barrier function being called in the log, and I can see messages being sent and received thereafter for a passing and a failing example. For the passing example, messages are sent/received and then the MPI_Barrier function Leave is logged.
For the failing example it look like one (or more) of the send messages is lost - it is never received by the target. Am I correct in thinking that messages lost within the MPI_Barrier call will mean that the processes never synchronize, therefore all get stuck at the Communicator.world.Barrier() call?
What could be causing this to happen intermittently? Could poor network performance between the COMPUTE-NODES be a cause?
I'm running MS HPC Pack 2008 R2, so the version of MS-MPI is pretty old, v2.0.
EDIT - Additional information
If I keep a task running within the same node, then this issue does not happen. For example, if I run a task using 8 cores on one node then fine, but if i use 9 cores on two nodes I'll see this issue ~50% of the time.
Also, we have two clusters in use and this only happens on one of them. They are both virtualized environments, but appear to be set up identically.

Eclipse RCP: PreferenceStore data gets removed on restart, is this supposed to happen?

I was under the impression that when I use the IPrefrenceStore of an AbstractUIPlugin I would be able to save information between restarts but that doesn't seem to be the case?
Storing some data:
private IPreferenceStore preferenceStore = FeaturePlugin.getDefault().getPreferenceStore();
preferenceStore.setValue("testKey", "SomeString");
Now restart the RCP and try tro recover the stored information:
private IPreferenceStore preferenceStore = FeaturePlugin.getDefault().getPreferenceStore();
preferenceStore.getLong("testKey")
Result is an empty String. Is this supposed to happen?
Resolution: If you kill your RCP while debugging the application, the preferences are not getting written since the stop() method of the corresponding plugin was never executed. Was a developing mistake on my behalf!

Why is my CE app refusing to run?

I've been maintaining a Windows CE app for some time now (over a year) and have produced new versions of it from time to time, copying them to the handheld device[s] and running the new versions there.
Today, though, I created a new Windows CE app for the first time. It is a very simple utility.
To create it in VS 2008, I selected a C# "Smart Device Project" template, added a few controls and a bit of code, and built it.
Here are some of the options I selected:
I copied the .exe produced via building the project to the handheld device's Program Files folder:
...but it won't run. Is it in the wrong location? Does it need some ancillary files copied over? Is there some other sort of setup I need to do to get it to run? Or what?
UPDATE
Since there's not much of it, I'm pasting ALL the code below in case somebody thinks my code could be the problem:
using System;
using System.Linq;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
namespace PrinterCommanderCE
{
public partial class PrinterCommanderForm : Form
{
public PrinterCommanderForm()
{
InitializeComponent();
}
private void btnSendCommands_Click(object sender, EventArgs e)
{
SendPrinterCommands();
}
private void SendPrinterCommands()
{
bool successfulSend = false;
const string quote = "\"";
string keepPrinterOn = string.Format("! U1 setvar {0}power.dtr_power_off{0} {0}off{0}", quote);
string shutPrinterOff = string.Format("! U1 setvar {0}power.dtr_power_off{0} {0}on{0}", quote);
string advanceToBlackBar = string.Format("! U1 setvar {0}media.sense_mode{0} {0}bar{0}", quote);
string advanceToGap = string.Format("! U1 setvar {0}media.sense_mode{0} {0}gap{0}", quote);
if (radbtnBar.Checked)
{
successfulSend = SendCommandToPrinter(advanceToBlackBar);
}
else if (radbtnGap.Checked)
{
successfulSend = SendCommandToPrinter(advanceToGap);
}
if (successfulSend)
{
MessageBox.Show("label type command successfully sent");
}
else
{
MessageBox.Show("label type command NOT successfully sent");
}
if (ckbxPreventShutoff.Checked)
{
successfulSend = SendCommandToPrinter(keepPrinterOn);
}
else
{
successfulSend = SendCommandToPrinter(shutPrinterOff);
}
if (successfulSend)
{
MessageBox.Show("print shutoff command successfully sent");
}
else
{
MessageBox.Show("print shutoff command NOT successfully sent");
}
}
private bool SendCommandToPrinter(string cmd)
{
bool success = false;
try
{
SerialPort serialPort = new SerialPort();
serialPort.BaudRate = 19200;
serialPort.Handshake = Handshake.XOnXOff;
serialPort.Open();
serialPort.Write(cmd);
serialPort.Close();
success = true;
}
catch
{
success = false;
}
return success;
}
}
}
UPDATE 2
Based on this, I added a global exception handler to the app so that Program.cs is now:
namespace PrinterCommanderCE
{
static class Program
{
[MTAThread]
static void Main()
{
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException += new UnhandledExceptionEventHandler(GlobalExceptionHandler);
Application.Run(new PrinterCommanderForm());
}
static void GlobalExceptionHandler(object sender, UnhandledExceptionEventArgs args)
{
Exception e = (Exception)args.ExceptionObject;
MessageBox.Show(string.Format("GlobalExceptionHandler caught : {0}", e.Message));
}
}
}
Yet running the new build shows nothing - it just "flashes" momentarily with about as much verbosity as Lee Harvey Oswald after Jack Ruby's friendly visit.
UPDATE 3
Could the problem be related to this, and if so, how to solve it?
The circumstance that both my updated version of an existing app AND this brand new and simple app refuse to run indicate there is something fundamentally flawed somewhere in the coding, building, or deployment process.
UPDATE 4
As this is a minimal utility, the reason it (and my legacy, much more involved) app are not working may have something to do with the project properties, how it's being built, a needed file not being copied over, or...???
NOTE: The desktop icon is "generic" (looks like a blank white form); this perhaps indicates a problem, but is it indicative of something awry or is it a minor (aesthetics-only) problem?
UPDATE 5
In Project > Properties..., Platform is set to "Active (Any CPU)" and Platform target the same ("Active (Any CPU)")
I have read that this is wrong, that it should be "x86", but there is no "x86" option available - Any CPU is the only one...?!?
UPDATE 6
In Project > Properties... > Devices, the "Deploy the latest version of the .NET Compact Framework (including Service Packs)" is checked. Is this as it should be?
UPDATE 7
Okay, here's the really strange part of all this:
I have two CF/CE apps that I need to run on these Motorola/Symbol 3090 and 3190 handheld devices.
One is this simple utility discussed above. I find that it actually does run on one of the devices (the 3190, FWIW). So it runs on one device, but not on the other.
HOWEVER, the other (legacy) .exe is the opposite - it runs on the 3090 (where the utility will not even start up), but not on the 3190.
So the utility's needs are met by the 3190, and the legacy util's needs are met by the 3090. However, the NEW version of the legacy app does not run on either device!
I am baffled; I feel as Casey Stengel must have when speaking once of his three catchers: "I got one that can throw but can't catch, one that can catch but can't throw, and one who can hit but can't do either."
UPDATE 8
The 3190 has a newer version of the CF installed; it seems that both the new and the old apps should run on the new device with the newer CE, but they don't - only the one built against/for the new framework does...
UPDATE 9
Here is what the 3090 looks like:
UPDATE 10
So I have two exes, one that runs on the devices (both of them now), and the other that will run on neither of the devices. The two exesw seem almost identical. I compared them with three tools: Red Gates' .NET Reflector; JetBrains' dotPeek, and Dependency Walker.
Here is what I found:
Dependency Walker
Both seem to have the same errors about missing dependencies (I didn't have them in the same folder with their dependent assemblies is probably the problem there)
.NET Reflector
The nonworking file has this entry that the working file does not:
[assembly: Debuggable(0x107)]
Is this the problem and, if so, how can I change it?
JetBrains dotPeek
The References in the working copy of the exe are all version 1.0.50000.0
The non-working exe has an identical list of References, and the same version number.
There is this difference, though:
For the working .exe, dotPeek says, "1.4.0.15, msil, Pocket PC v3.5"
For the non-working .exe, dotPeek says, "1.4.0.15, msil, .Net Framework v4.5"
Is this the problem and, if so, how can I change the non-working .exe to match the working one?
This last is disconcerting, primarily because I see no place in the non-working (newer) version of the project where a "4.5" string exists. Where could dotPeek be getting that information?
UPDATE 11
I do know now that the problem is somewhere between these two MessageBox.Show()s, because the first one I see, but not the second:
public static int Main(string [] args)
{
try
{
// A home-brewed exception handler (named ExceptionHandler()) is already defined, but I'm adding a global one
// for UNHANDLED exceptions (ExceptionHandler() is explicitly called throughout the code in catch blocks).
MessageBox.Show("made it into Main method"); // TODO: Remove after testing <= this one is seen
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException += new UnhandledExceptionEventHandler(GlobalExceptionHandler);
string name = Assembly.GetExecutingAssembly().GetName().Name;
IntPtr mutexHandle = CreateMutex(IntPtr.Zero, true, name);
long error = GetLastError();
if (error == ERROR_ALREADY_EXISTS)
{
ReleaseMutex(mutexHandle);
IntPtr hWnd = FindWindow("#NETCF_AGL_BASE_",null);
if ((int) hWnd > 0)
{
SetForegroundWindow(hWnd);
}
return 0;
}
ReleaseMutex(mutexHandle);
DeviceInfo devIn = DeviceInfo.GetInstance();
Wifi.DisableWifi();
// Instantiate a new instance of Form1.
frmCentral f1 = new frmCentral();
f1.Height = devIn.GetScreenHeight();
f1.Text = DPRU.GetFormTitle("DPRU HHS", "", "");
MessageBox.Show("made it before Application.Run() in Main method"); // TODO: Remove after testing <= this one is NOT seen
Application.Run(f1);
devIn.Close();
Application.Exit();
return 0;
}
catch(Exception ex)
{
DPRU.ExceptionHandler(ex, "Main");
return 0;
}
} // Main() method
UPDATE 12
More specifically, I've got infinite looping going on somehow; By mashing the "Ent" pill on the handheld device (that's what the button looks like - a "lozenge") - it sounds like gerbils tap-dancing (as debugging MessageBox.Show()s in two methods pop up and are dismissed over and over ad infinitum ad (literally) nauseum).
If an application does not start it is mostly missing something. As you compiled for WindowsCE and CF3.5, the Compact Framework 3.5 runimes have to be installed on the WindowsCE device.
Normally Compact Framework is part of Windows CE images, at least version 1.0, but who knows for your test device? If at least one CF is installed, an app requiring a newer CF version will show that on start by a message stating about the missed version. So either no CF is on your device, or something is goind real wrong.
You can run \Windows\cgacutil.exe to check the CF version installed on the device. The tool will show the version of installed CF.
You can debug using a TCP/IP connection or ActiveSync connection. See remote debuggung elsewhere in stackoverflow, I wrote a long aanswer about remote debug via TCP/IP. Or does your device neither have USB and WLAN or ENET?
Update: Here is the answer for remote debug via tcp/ip: VS2008 remotely connect to Win Mobile 6.1 Device This will also enable the remote deployment "In Project > Properties... > Devices, the "Deploy the latest version of the .NET Compact Framework (including Service Packs)" is checked. Is this as it should be?"
Are the earlier apps you wrote also written .NET? Compact framework does not care about the processor architecture, only the CF runtimes have to match the processor. So you do not need an x86 target as if you write a native C/C++ SmartDevice project.
To your comments:
a) CF1.0 is installed on the device.
b) the exe built on the colleagues computer seems to be built for CF1 and therefor runs OK.
c) your exe is built for CF 3.5 and does not run as there is no CF3.5 runtime on the device.
d) most CF exe files are very small as long as they do not include large resources or ...
Conclusion so far: Install the CF3.5 runtime onto the device: http://msdn.microsoft.com/en-us/library/bb788171%28v=vs.90%29.aspx.
To run the legacy app on both devices, the referenced Motorola or other 3rd party runtimes must also be installed. I stringly recommand to setup your environment so you can use ActiveSync/WMDC for development, deployment and debugging of the device. If you are unable look for some more experienced colleague.
Can you try to run it inside the debugger and check where it fails?
Can you place a breakpoint right at the beginning of Program.main and check if it's reached?
Debug output may also give you some interesting hints.

EF6/Code First: Super slow during the 1st query, but only in Debug

I'm using EF6 rc1 with Code First strategy, without precompiled views and the problem is:
If I compile and run the exe application it takes like 15 seconds to run the first query (that's okay, since I'm still working on the pre-generated views). But if I use Visual Studio 2013 Preview to Debug the exact same application it takes almost 2 minutes BEFORE running the first query:
Dim Context = New MyEntities()
Dim Query = From I in Context.Itens '' <--- The debug takes 2 minutes in here
Dim Item = Query.FirstOrDefault()
Is there a way to remove this extra time? Am I doing something wrong here?
Ps.: The context itself is not complicated, its just full with 200+ tables.
Edit: Found out that the problem is that during debug time the EF appears to be generating the Views ignoring the pre-generated ones.
Using the source code from EF I discovered that the property:
IQueryProvider IQueryable.Provider
{
get
{
return _provider ?? (_provider = new DbQueryProvider(
GetInternalQueryWithCheck("IQueryable.Provider").InternalContext,
GetInternalQueryWithCheck("IQueryable.Provider").ObjectQueryProvider));
}
}
is where the time is being consumed. But this is strange since it only takes time in debug. Am I missing something here?
Edit: Found more info related to the question:
Using the Process Monitor (by Sysinternals) I found out that there its the 'desenv.exe' process that is consuming tons of time. To be more specific its consuming time with an 'Thread Exit'. It repeats the Thread Exit stack 36 times. I don't know if this info is very useful, but I saved a '.cvs' with the stack, here is his body: [...] (edit: removed the '.cvs' body, I can post it again by the comments if someone really think its going to be useful, but it was confusing and too big.)
Edit: Installed VS2013 Ultimate and Entity Framework 6 RTM. Installed the Entity Framework Power Tools Beta 4 and used it to generate the Views. Nothing changed... If I run the exe it takes 20 seconds, if I 'Start' debugging it takes 120 seconds.
Edit: Created a small project to simulate the error: http://sdrv.ms/16pH9Vm
Just run the project inside the environment and directly through the .exe, click the button and compare the loading time.
This is a known performance issue in Lazy (which EF is using) when the debugger is attached. We are currently working on a fix (the current approach we are looking at is removing the use of Lazy). We hope to ship this fix in a patch release soon. You can track progress of this issue on our CodePlex site - http://entityframework.codeplex.com/workitem/1778.
More details on the coming 6.0.2 patch release that will include a fix are here - http://blogs.msdn.com/b/adonet/archive/2013/10/31/ef6-performance-issues.aspx
I don't know if you have found the solution. But in my case, I had similar issue which wasted me close to a week after trying different suggestions. Finally, I found a solution by changing my web.config to optimizeCompilations="true" and performance improved dramatically from 15-30 seconds to about 2 seconds.