Verity on MX7 causing CPU to spike to 100%

We have just migrated our sites from CF5 to CFMX7. I
recreated the collections on the new server and everything appeared
to be fine. Now seeing CPU utilization spike to 100% when a search
is run. Any ideas as to what to look for or why this would be
happening? Thanks in advance for any help.

mDNSResponder is a process that searches and publishes content automatically. It's normal for it to be going non-stop in scanning IP networks. However, it should never take more than a 2-10% of your total CPU.
The MDNSResponder is just doing what's being asked of it. In short, there's an appllication/widget/etc. that's working at elevated rates. I was surprised, for example, that by signing up for Veoh, a small amount of bandwidth was being used - continually, without my knowing it - to support their whole network. The MDNSResponder helps achieve that. A network filter does the same thing. There is some service which is doing the same thing with your computer. It's magnified if you operate in Low Power Mode, since the stream of data just doesn't stop. It operates at elevated levels when an application (like iTunes) boots.
Find the application, and then decide if you're paying a fair price. You can do your own policework by playing around with Activity Monitor (which also uses it).

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Putting ActiveX(packager) in CTabCtrl will cause CPU increase up to 100%

Putting ActiveX(packager) in CTabCtrl will cause CPU increase up to 100%, and the whole system hangs.(When the test application loses its focus).
Could you tell me why?
Thanks.

Ken McEwen wrote:
Have reinstalled Lion overnight and it seems to be limping along this morning, although the wi-fi is dropping repeatedly.
How I wish I had followed my usual rule and waited until at least OSX 10.7.1 before installing.
How did you "reinstall?" Others are reporting that installing from scratch is working better. If you're going to keep trying with Lion, I'd recommend posting in the Lion forum: https://discussions.apple.com/community/mac_os/mac_os_x_v10.7_lion (wow, I almost said "Windows forum," hmmm ).
I may get in at 7.1, more likely at 7.2, but only if things look like they've changed enough. This appears to me to be on par with the change from 9 to X, and I waited until 10.2.3 with that one. If/when I do change, I'll have an up to the minute SL clone ready to reinstall if needed, and even then, I'll probably put 10.7 on an external HD.

Firefox causes CPU to go to 100% for 30 seconds...

Help!
I have an iMac G5 running 10.4.9 , 2GHz processor and 1.5GB RAM with a USB Lacie external hard drive attached...
I'm running a fresh install of Firefox 2.0.0.4
I've had this computer for about three years and during the past few months I've noticed that whenever I use firefox, when it is loading a page or waiting for a site/transfering data or even somtimes when I'm typing text into a web form, the CPU will go to 100% and stay there for like 20-30 seconds, I'll get the rotating pin-wheel and the browser is just locked up.
It becomes like every operation, every page I switch to has this processor load and performance hit!
I can switch to other apps, but the CPU is pegged!
Safari does not have this problem. I've installed Netscape and it seems to have the problem too.
I have cleared all of the browser caches and logs, cleared the system logs.
I've uninstalled Firefox and reinstalled it from scratch. Nothing has helped.
No other apps other than those two browsers cause this problem.
When I look in the activity monitor at what is happening, it shows firefox using like 75-80% of the cpu and it shows it as: "not responding", then it comes back and is using like 10% of the cpu. It is like it is waiting for somthing to time out and just peggs the processor until that happens.
I sure hope someone has run into this, I feel like I'm crazy, it is making the computer very un-usable for me.
Thanks. -Donovan

I have noticed the same thing before on other CRIO systems - no idea what is causing it. I'd vote for the elfs...
Mike...
PS: Don't Panic
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CSA causes cpu utilization spike in enforcement mode?

I am experiencing a problem where two servers (specifically a file a server and a Citrix server) are experiencing spikes in CPU utilization (maxing out at 100% util) whenever we take them out of "Test" mode.
These systems are running CSA v4.5-1 build 616 agents. In order to stop the CPU issue, we had to stop the agent (which dropped the processor util immediately), put the system back into a "Test" state, restart the agent, and poll the server.
Now that the server is back in a Test state, the CPU problem doesnt exist.
Any thoughts or suggestions would be greatly appreciated.

CSA is trying to do a lot of work but it isn't logging anywhere because it's set not to.
1. Create a new group called "Windows test".
2. Clone the policies in the group and add them to the new group.
3. Change all the rules in those cloned policies to log.
4. Put the group in test mode.
5. Put a problem server in the group and see what events are generated.
You should see what's causing the problem without killing the server in the process.
Then you'll be able to either except the process or disable the rule causing it (if that's safe).
You also didn't mention what process is spiking the CPU.
Tom S

MDNSResponer causing CPU to run at 100%

For a while now (ever since upgrade to 10.5) my computer seems to be always running its fan. It's very sluggish and many other problems. So, today I finally decided to start the activity monitor and take a look at things. Low and behold my processor is pegged out at 100%. The guilty parting seems to be a process named "mDNSResponder".
Anybody know what this process is and why it constantly has my computer CPU running at 100%, and what to do about it?
Thanks,
Rich

mDNSResponder is a process that searches and publishes content automatically. It's normal for it to be going non-stop in scanning IP networks. However, it should never take more than a 2-10% of your total CPU.
The MDNSResponder is just doing what's being asked of it. In short, there's an appllication/widget/etc. that's working at elevated rates. I was surprised, for example, that by signing up for Veoh, a small amount of bandwidth was being used - continually, without my knowing it - to support their whole network. The MDNSResponder helps achieve that. A network filter does the same thing. There is some service which is doing the same thing with your computer. It's magnified if you operate in Low Power Mode, since the stream of data just doesn't stop. It operates at elevated levels when an application (like iTunes) boots.
Find the application, and then decide if you're paying a fair price. You can do your own policework by playing around with Activity Monitor (which also uses it).

History of Processes - how to view which process caused CPU spike?

We have been facing an issue with a domain controller (Windows Server 2008 R2, VM on ESX 5.0) over the past week. Around twice a day, the CPU spikes at 100% for about 10 minutes. We notice because we receive an alert from the hypervisor, but by the time we can actually log in to check what process is causing it, it would have come back to normal. There doesn't seem to be any pattern re times, its quite erratic. Sometimes at 08:00AM, sometimes at 01:00AM, 4:00AM, 7:00PM, etc. Also nothing in the Event Logs.
It's not a big deal but I just want to know if I can somehow record theprocess history, to see which process was stuck at 100% at a certain time. I know about Performance Monitor (perfmon) but it doesn't really meet my requirements since it doesn't record the actual processes (e.g. AV.exe, svchost.exe, chrome.exe, etc).Any...
This topic first appeared in the Spiceworks Community

You might check with your apps' developers to see if they support AppleScript, Automator, or other scripting languages that might be used for this. Some programs have built-in macro and scripting options that can be set up in a built-in editor or run in a built-in command-line environment of sorts, while others supply libraries for external scripting with AppleScript and others.
As for live tracing of a program's commands, most that you use will be coded in a low level language like C, C++, Java, or Objective-C, which are compiled and run in binary machine code as opposed to an interpreted language (one that does not need compiling to run), as is the case with most scripting languages (shell scripts, AppleScript, Matlab, etc.).
For the most part, the only options you have for "tracing" a program's functions are to monitor output that it might log to the console. You can see this by opening the console, but the output here is diagnostic in nature and is programmatically limited to what the programmers have intended be output (ie, things like warnings and errors, as opposed to every action the program is taking). You can also use the Terminal to directly launch a program's executable so it is hosted in the Terminal shell. This will give you direct access to all of the program's output, as opposed to that only intended for logging in the Console, but it is still not the same as a full output of the commands and routines the program is performing.
Some of Apple's developer tools can allow you to better monitor a program's functions, but these are intended for developers, and have some requirements, and will not allow you to use any results for productivity automation.

Space designer causing cpu spike overload

Hope you guys can help with this, it's beginning to annoy me. I'm currently unable to use space designer reliably. I had this problem in Logic 8 and it's still happening in 9. I have one instance of SD in my current project and it's causing cpu spikes that are giving me errors. The funny thing is that the error happens just after a region that is being sent to the reverb has ended. the cpu meter then gradually rises until the error stops playback. If I turn SD off i don't get these problems or if I disable SD via automation when it's not needed it seems ok also. What the **** is this about? The thing is I really like the sound of SD and miss it when I have to use different reverbs. Anyone else having these issues? I read on another thread that setting all your inputs to "no input" helps but for me it doesn't. What else can I try?
cheers
p

Thanks for your input.
Just to clarify, I am getting the spike once the audio data stops sending through the SD plugin (whilst the song is still playing). So, for example I may send a 10 second bit of audio through the plug - this works fine. Then once the audio stops sending and the reverb trail finishes....I then get the CPU going mad - and yet there is complete silence within the song - there is nothing else playing!
This has got to be a bug or conflict of some kind - my computer spec is massive and should be able to cope with a stereo bit of audio through one plugin! (Hope this makes sense.)
There have been a couple of posts similar but no answers as yet...
Wondering whether it is a conflict with UAD plugins or something which limits the reproduction of this bug...I have noticed that if I remove all UAD plugins from the channel strip in question, the error tends not to reappear - but the issue is unique to the SD plugin.
Danny

ITunes causing CPU spikes

Ever since I upgraded to the most recent version of iTunes, my laptop has gone extremely slow when iTunes is running (i'm now using winamp). The CPU usage spikes from 80% up to 95-100%.
My music is stored on an external hard drive, the laptop is an Inspiron 9100 (Pentium 4, 3.20GHz, 1024MB RAM) and had no problems whatsoever before upgrading.
I did a complete wipe of my laptop a couple of days ago and all other applications are running much faster, but i've downloaded iTunes again and the same problem occurs. I've also tried downgrading the version to see if that helps but it doesn't.
Anyone suggest anything or experience similar?

I have to agree that there is some major problem with iTunes - I'm totally unimpressed having never used it before and just having bought my first ipod.
Windows XP SP2, 1.6 Ghz, 2Gb RAM
Insert any music CD and RIP via iTunes = 100% CPU utilization
Insert any music CD and RIP via Windows Media Player = 40% CPU utilization
So I need a dedicated machine to support the ripping of my music? What a joke.

Uncorrelated GC STW pauses in ParNew + sys cpu time spikes from jvm calls

Hi, JVM experts.
GC is not an easy subject to grab all its subtleties, so I'm looking for some advice with my situation where to dig further.
The overall picture:
1) Linux smp (2.6.5) x86_64 host with 8G memory, 2x2Ghz xeon (HT) CPUs
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_02-b05, mixed mode)
2) Heap: -Xms4500M -Xmx4500M -XX:MaxNewSize=128m -XX:NewSize=128m -XX:MaxPermSize=128m -XX:PermSize=128m
3) GC: -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:MaxTenuringThreshold=0 -XX:SurvivorRatio=128 -XX:CMSInitiatingOccupancyFraction=60 -XX:+UseCMSInitiatingOccupancyOnly -XX:+CMSParallelRemarkEnabled -XX:+DisableExplicitGC -XX:+PrintGCApplicationStoppedTime -XX:+PrintClassHistogram
4) Application is running under consistent traffic for two weeks.
5) I monitor the system with "sar"
6) Once or twice a week I observe the kernel-space cpu usage spike to ~90% for a duration <10 seconds.
7) I detect the cpu spike and dump a snapshot of the system situation. It's the JVM which consumes the syscpu time. JVM is sent SIGQUIT at the same instant.
There are two points, I'm rather vague about.
1) All cpu load situations have the following similar pattern in GC log file:
195098.019: [GC 195098.019: [ParNew
Desired survivor size 491520 bytes, new threshold 0 (max 0)
: 129152K->0K(130112K), 0.0754030 secs] 1549718K->1448253K(4607040K), 0.0755550 secs]
Total time for which application threads were stopped: 0.0758180 seconds
Application time: 0.5316910 seconds
Total time for which application threads were stopped: 0.0003550 seconds
Application time: 0.0695990 seconds
Total time for which application threads were stopped: 0.0001620 seconds
Application time: 0.1657730 seconds
Total time for which application threads were stopped: 0.0001780 seconds
Application time: 0.0000350 seconds
Total time for which application threads were stopped: 0.0000440 seconds
Application time: 0.2738210 seconds
Total time for which application threads were stopped: 0.0003530 seconds
Application time: 0.3108570 seconds
195099.448: [GC 195099.448: [ParNew
Desired survivor size 491520 bytes, new threshold 0 (max 0)
: 129151K->0K(130112K), 0.0712390 secs] 1577405K->1476947K(4607040K), 0.0713980 secs]
Total time for which application threads were stopped: 0.0716750 seconds
Application time: 0.0364560 seconds
Total time for which application threads were stopped: 8.2666520 seconds
Application time: 0.0000700 seconds
Total time for which application threads were stopped: 0.0055730 seconds
Application time: 0.0069140 seconds
Total time for which application threads were stopped: 0.0017350 seconds
Application time: 0.0011930 seconds
Total time for which application threads were stopped: 0.0064760 seconds
Application time: 0.0000720 seconds
Total time for which application threads were stopped: 0.0001120 seconds
Application time: 0.0001010 seconds
Total time for which application threads were stopped: 0.0000650 seconds
Application time: 0.0001570 seconds
195107.840: [Full GC 195107.840: [CMS: 1476947K->1092516K(4476928K), 7.6193100 secs] 1488921K->1092516K(4607040K), [CMS Perm : 46862K->46641K(131072K)], 7.6194800 secs]
num #instances #bytes class name
1: 1962568 306032400 [Ljava.util.HashMap$Entry;
2: 1962446 125596544 java.util.HashMap
The "delay" of the SIGQUIT/Histogram dump can be ~1-2 seconds from the CPU overload detection. I'm curious about the "suspeciously spurious" SWT preceding the cpu spike. What could be the possible reasons?
2) Per thread analysis of the JVM threads hinted me to one thread which sometimes monopolized ~60% of the cpu time in kernel space. This is the native posix thread which "calls back into" JVM on certain events. Could it somehow cause the aforementioned STW?
My attempts to get a gdb stack dump at cpu load event failed (gdb can't resolve the stack in some of the jvm threads and enters infinite loop)
Any advice is greatly appreciated
regards,
- andrey

Just to close my "ticket" with some findings on the way hopefully to be useful for somebody else.
Since the problem manifested itself only on Linux box (have tried two different enterprise production kernels 2.6), I couldn't use dtrace, so my choice was limited to systap and /proc/profile.
The pattern when cpu usage was spiking was the following:
15 get_stack 0.1042
31 unhandled_signal 0.6458
34 stub_rt_sigreturn 0.2297
49 copy_siginfo_to_user 0.1021
70 find_vma 0.6250
94 retint_signal 0.7705
100 do_sigaltstack 0.2604
138 is_prefetch 0.3920
211 __up_read 1.1989
252 system_call 1.9535
292 __down_read 1.9730
552 save_i387 2.8750
1501 do_page_fault 0.9381
2266 do_signal 1.3488
2427 get_signal_to_deliver 1.9700
2452 force_sig_info 11.7885
3715 sys_rt_sigreturn 5.1597
14260 total 0.0057
It has been always the extensive number of signals generated. systap is lacking dtace java probes (as well as any u-level probes for that matter), so I could tap only in the kernel on syscalls:
force_sig_info= 10209 – 10230
0xc043681b : force_sig_info+0x1/0x86
0xc04230d3 : force_sig_info_fault+0x24/0x28
0xc0404670 : sys_rt_sigreturn+0x0/0xff
0xc061e3d8 : kprobe_exceptions_notify+0x164/0x386
0xc061f043 : notifier_call_chain+0x2a/0x47
0xc061f07e : atomic_notifier_call_chain+0x17/0x1a
0xc061f011 : do_page_fault+0x5e7/0x5ef
0xc0400000 : startup_32+0x0/0xb4
sys_rt_sigreturn= 10209 – 10235
0xc0404671 : sys_rt_sigreturn+0x1/0xff
0xc040518a : syscall_call+0x7/0xb
0xc0400000 : startup_32+0x0/0xb4
sys_rt_sigreturn() is tricky (it is designed to return to the kernel from the u-space signal handler), but the force_sig_info() is the result of the do_page_fault(). The swap was disabled and I assumed that page faults were "minor"-s. Looking at the comments in the OpenJDK JVM sources I could see that there are cases for non-mapped regions singal handling (like dynamic stack growth), so I suspected it's something very JVM specific. I could not correlate it precisely to GC events.
The end of the story is that I didn't find out exactly what was the real trigger of this event, but JVM1.6.05 does not produce such CPU spilkes.
- a.

CPU Usage Spikes - Crashes ITunes

I've been using Itunes for about a year, and over the past week, my CPU usage will spike at 100% while playing Itunes, causing the song quality to skip and play as if it was a scratched CD. I updated from 4.9 to 5.0 (erasing all existing Itunes programs first) and the problem still happens. I'm not running anything else other than Itunes, and the usage still spikes to 100% causing the problem.
Please help!

I'm having the same problem. I've isolated it in a number of ways trying to resolve it.
It always happens 13 seconds into playing a track. This applies whether it plays from the beginning, 1 min into the track or if I make is jump to different places. Each time, once it has played 13 seconds (ie first 13 secs or if I jump to 1 min immediately it will be at 1:13 or if I play 6 secs then jump to 1:30 it will happen at 1:37). The CPU spikes to 100%, pausing everything and leaving a 3 or 4 sec silence.
This happens regardless of track length. So a 1 hour dj set will have the CPU spike at 13 secs and then be fine for the next hour.
It seems to me to be related to some sort of buffering or something similar in Itunes. I have worked out that once it has caused the CPU spike I can restart the same track and it will play through without a hiccup. If I play the next track and then come back to the first track, though, it will glitch at 13 secs again. I can also make it glitch on a replay of the first track without playing any others by changing the tracks that are to come after it in the playlist. This seems to suggest it is related to buffering the coming track(s).
I can make the silent gaps go away by reducing the size of my music library considerably. It is over 45 gig now. If I reduce it to below 20 gig the CPU spiking occurs but not at 100% and so not causing the silences. The problems is still there, though, and itunes has played my 40 gig library fine for months without any such problems.
Recent changes have included a few software installs. I have removed those that I could (eg Nero) but I do still have one photo editing programme that I need for a current job. I had removed quicktime from my startup but seeing a suggestion that this caused such a problem I have put it back. This has not fixed the problem for me.
I have also bought a shuffle and would have probably run the software related to that. If you had a problem when you added a mini perhaps it's due to some sort of error arising from the software coming with new ipods when used with existing itunes installations? Just a guess.
I'm running Itunes 4.7.1.30. I had thought about upgrading to 5 but it seems to be causing more problems and it seems it doesn't resolve this one.
If anyone can help with this I would be most grateful as it is making Itunes unusable on my computer. I'm going to have to go back to playing cds!!!

Simple Java 3D programs CPU Usage spikes to up to 90 percent!

Hi, everyone. Im completely new to Java 3D and Im toying around with basic program structure right now. My code is based off of that in the first chapter on 3D in Killer Game Programming in Java. I removed most of the scene elements, replacing them with a simple grid, Maya style. (Yes, Im starting off small, but my ambitions are grand I intend on creating a polygonal modeling and animation toolset. After all, the Maya PLE is dead damn you, Autodesk! and I just plain dislike Blender.) I implement a simple OrbitBehavior as a means for the user to navigate the scene. That part was basically copy and paste from Andrew Davisons code. The mystery, then, is why the programs framerate drops below 1 FPS and its CPU Usage spikes to up to 90 percent, according to the Task Manager, when I tumble the scene. Id appreciate anyone taking the time to look at the code and trying to identify the problem area. (Ive undoubtedly missed something totally newbish. -.-) Thank you!
(Also, I had the worst possible time wrestling with the posting process. Is anyone else having trouble editing their posts before submitting them?)
import java.awt.*;
import javax.swing.*;
public class MAFrame
    public static final Dimension SCREEN_SIZE = Toolkit.getDefaultToolkit().getScreenSize();
    public MAFrame ()
        System.out.println("Initializing...");
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        catch (Exception e) {
            e.printStackTrace();
        JFrame frame = new JFrame ("Modeling and Animation");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        MAViewPanel panel = new MAViewPanel ();
        frame.getContentPane().add(panel);
        frame.pack();
        frame.setLocation(((int)SCREEN_SIZE.getWidth() / 2) - (frame.getWidth() / 2),
                          ((int)SCREEN_SIZE.getHeight() / 2) - (frame.getHeight() / 2));
        frame.setVisible(true);
import com.sun.j3d.utils.behaviors.vp.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import java.awt.*;
import javax.media.j3d.*;
import javax.swing.*;
import javax.vecmath.*;
public class MAViewPanel extends JPanel
    public static final int GRID_SIZE = 12;
    public static final int GRID_SPACING = 4;
    public BoundingSphere bounds;
    public BranchGroup sceneBG;
    public SimpleUniverse su;
    public MAViewPanel ()
        GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D (config);
        canvas3D.setSize(600, 600);
        add(canvas3D);
        canvas3D.setFocusable(true);
        canvas3D.requestFocus();
        su = new SimpleUniverse (canvas3D);
        createSceneGraph();
        initUserPosition();
        orbitControls(canvas3D);
        su.addBranchGraph(sceneBG);
    public void createSceneGraph ()
        sceneBG = new BranchGroup ();
        bounds = new BoundingSphere (new Point3d(0, 0, 0), 1000);
        // ambient light
        Color3f white = new Color3f (1.0f, 1.0f, 1.0f);
        AmbientLight ambientLight = new AmbientLight (white);
        ambientLight.setInfluencingBounds(bounds);
        sceneBG.addChild(ambientLight);
        // background
        Background background = new Background ();
        background.setColor(0.17f, 0.65f, 0.92f);
        background.setApplicationBounds(bounds);
        sceneBG.addChild(background);
        // grid
        createGrid();
        sceneBG.compile();
    public void createGrid ()
        Shape3D grid = new Shape3D();
        LineArray lineArr = new LineArray (GRID_SIZE * 8 + 4, GeometryArray.COORDINATES);
        int offset = GRID_SIZE * GRID_SPACING;
        // both sides of the grid plus the middle, done for both directions at once (each line defined by two points)
        for (int count = 0, index = 0; count < GRID_SIZE * 2 + 1; count++) {
            // vertical, left to right
            lineArr.setCoordinate(index++, new Point3d (-offset + (count * GRID_SPACING), 0, offset)); // starts near
            lineArr.setCoordinate(index++, new Point3d (-offset + (count * GRID_SPACING), 0, -offset)); // ends far
            // horizontal, near to far
            lineArr.setCoordinate(index++, new Point3d (-offset, 0, offset - (count * GRID_SPACING))); // starts left
            lineArr.setCoordinate(index++, new Point3d (offset, 0, offset - (count * GRID_SPACING))); // ends right
        grid.setGeometry(lineArr);
        sceneBG.addChild(grid);
    public void initUserPosition ()
        ViewingPlatform vp = su.getViewingPlatform();
        TransformGroup tg = vp.getViewPlatformTransform();
        Transform3D t3d = new Transform3D ();
        tg.getTransform(t3d);
        t3d.lookAt(new Point3d (0, 60, 80), new Point3d (0, 0, 0), new Vector3d(0, 1, 0));
        t3d.invert();
        tg.setTransform(t3d);
        su.getViewer().getView().setBackClipDistance(100);
    private void orbitControls (Canvas3D c)
        OrbitBehavior orbit = new OrbitBehavior (c, OrbitBehavior.REVERSE_ALL);
        orbit.setSchedulingBounds(bounds);
        ViewingPlatform vp = su.getViewingPlatform();
        vp.setViewPlatformBehavior(orbit);
}

Huh. A simple call to View.setMinimumFrameCycleTime() fixed the problem. How odd that there effectively is no default maximum framerate. Of course simple programs like these, rendered as many times as possible every second, are going to consume all possible CPU usage...

Java 1.4.2 version CPU spike to 100%, require tools to monitor CPU spike

Hi,
When using our application CPU is spiked to 100% (Suspecting memory leak here). The Java version used is Java 1.4.2_04. This CPU spike is seen only when more users are logged in (may be around 25 users and more).
Any tools to monitor the CPU spike (other than perfmon) ? How to nail down the memory leak issue or CPU spike in code perspective.
Please suggest some tools to do monitoring as well..
Thanks in Advance.

It's quite heard to create a memory leak with Java (except from creating objects in a loop or something like that). Perhaps it's only the garbage collector? If you have a memory leak you don't only get a CPU spike, but the VM will exit if the heap space is full.
I used JProfiler before and it's really good.

JDev 10.0.1.3 CPU Usage Spikes - Somewhat Serious!

I have noticed that JdevW.exe process in task menager has annoying CPU usage spikes every 2-3 seconds. This does NOT happen if I use 10.0.1.2 version.
I have fairly powerful Dell workstation. Any ideas? Configuration problem?
BTW embedded OC4J is not running.

Shay,
I am actually not doing anything. As soon as I open JDev I can see (and feel) that performance problem. Every time the 'spike' occurs, mouse gets 'frozen' for a fraction of a second. It is anoying a bit.
My coworker's installation do not have that problem and I wonder if add-ons that I have downloaded and installed would create this behavior. BTW, how do I figure out what add-ons (plugins) I got?
I can see 'jucheck.exe' and 'jusched.exe' processes as well but even when I killed them the spikes occur.
Any thought?

Windowserver spikes to 100% cpu opening one specific folder

one issue keeps haunting my imac 27" (late 2013) running on maverick 10.9.4
everything runs pretty fine until i open one folder containing further folders with jpgs. the primary folder is 1.98 gb, but i have other folders on the external wd my book drive that are 78 gb heavy and don't have that issue of windowserver spiking up to 100 % cpu. the problem is limited to that one folder.
i have know idea, what makes that folder special. i didn't have these problems on my old imac, where i can open the folder, delete jpg etc. without any problem.
any suggestions?

It's probably a combination of Flash and video decoding. Flash is not coded very efficiently on the Mac and uses more CPU than it should. On an older machine, this can tax the CPU to its limit. You can watch CPU usage spike even on Flash sites that don't use video - try it sometime.
Second, the way that current video codecs get so much quality out of so little bandwidth is by applying encoding so intensive that you need a very powerful CPU to decode it. Codecs that assume they will be running on the 2GHz dual-core CPUs of the last few years will overtax the slower single-core G4 processors of half a decade ago.
I can watch Hulu and other videos on my PowerBook G4 at standard resolution (Hulu at a low frame rate, though), but the G4 cannot handle high quality resolution playback at all.
In your case, it's important to kill off any CPU-intensive processes that don't need to be running in the background when you're trying to watch something.

InterMedia search within report components causing Oracle to run at 100%cpu

Hi,
Running Win NT SP5
Oracle 8.1.7.1
IAS 1.0.2.2
Portal 3.0.9.8.1
I have a table with an intermedia index.
My report query has :
AND contains(i.description,:b_description) > 0
This appears to be the reason why my application components sometimes run othertime doesnt. It also seems to have caused my CPU to go to 100% .. such that Oracle process taking 100% CPU.
Take out this line.. and everything works fine!
Anyone else experienced this, any fix available ?
matt.

Hi,
Running Win NT SP5
Oracle 8.1.7.1
IAS 1.0.2.2
Portal 3.0.9.8.1
I have a table with an intermedia index.
My report query has :
AND contains(i.description,:b_description) > 0
This appears to be the reason why my application components sometimes run othertime doesnt. It also seems to have caused my CPU to go to 100% .. such that Oracle process taking 100% CPU.
Take out this line.. and everything works fine!
Anyone else experienced this, any fix available ?
matt.

Verity on MX7 causing CPU to spike to 100%

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