When writing DSC-tags, MSDE causes 100% CPU load

I have a number of shared variables configured to be logged in the DSC database. When I'm writing to these repeatedly the SQL-server (MSDE) loads the CPU with 100%. Why is that? Even when I've stopped, it “hangs” at 100% for quite some time. Eventually this stalls all other applications and the whole machine. What is DSC doing in the SQL-server? Is there a way to configure the behaviour?

Why are you concatenating an empty string to all of your strings?
You don't need to have multiple index arrays. Use one index array and resize the bottom of it downward. You won't need to wire up any indices either. By default, the top one will be index zero, and each one below that will be +1 the one above.
How does it behave when you run it with highlight execution? Does that give you an idea where it is hanging?
Also, your connection string as several backward apostrophe accent characters rather than regular apostrophes. See here.

Similar Messages

BT stack file TosBTMng.Exe causes 100% CPU Load

I'm also facing the problem that the Toshiba Bluetooth Manager (TosBtMng.exe) very often starts looping and causes a CPU load of 100%.
This happened with older versions of the Toshiba Bluetooth Stack and current version (5.1.0.12).
The affected system is a Tecra S1, internal BT-Modul and Windows XP SP2.
Installation of the BT-Stack went well and the notebook will boot succesfull while BT is enabled. I also checked for hidden COM-Ports and other hints found in this forum, no success.
The lockup seems to happen at different times. Sometimes just after are reboot, clicking on the BT Tray symbol with the right mouse button. Then the context menu is shown just as white area, no entries. It may also trying to connect to an already paired device. If I kill the process with the task manager I can restart and it continues to work for some time.
As found in another thread here I have enabled API logging of the Bluetooth Manager and found the following while connecting with the Nokia PC Suite to my mobile Phone:
00042519 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042520 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042521 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] BtCreateCOMM2 : InitCOMPort=COM6, CreateCOMPort=COM23
00042522 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] BlockingSDPCall : Send COPYDATASTRUCT / FuncNumber=00008000(32768), Size=00000036(54)
00042523 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] Receive WM_COPYDATA / fCloseAPI(BOOL)=0
00042524 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] SetReturnBackData : Received COPYDATASTRUCT / FuncNumber=00008000(32768), Size=00000028(40)
00042525 21:55:05 [7208] [TosBtAPI(PCCSTBTP)] Call BlockingSDPCall() is returned.
00042526 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] Call BtGetLocalInfo()
00042527 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] BtGetLocalInfo2 : Input Paramers / pLocalBtDeviceInfo=00D9FE8C, plStatus=00D9FE84
00042528 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] BlockingSDPCall : Send COPYDATASTRUCT / FuncNumber=00001000(4096), Size=00000030(48)
00042529 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] Receive WM_COPYDATA / fCloseAPI(BOOL)=0
00042530 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] SetReturnBackData : Received COPYDATASTRUCT / FuncNumber=00001000(4096), Size=0000003F(63)
00042531 21:56:14 [7208] [TosBtAPI(PCCSTBTP)] Call BlockingSDPCall() is returned.
00042532 21:56:17 [7208] [TosBtAPI(PCCSTBTP)] Call BtGetRemoteDeviceList2()
A new COM port is successfully created (COM23), and a few seconds later the CPU Load of TosBtMng goes up to 100%, but no API calls are performed. And if you wait long enough the phone gets connected and data can be transferred. However, very slowly.
Probably due to the high CPU load a next COM (COM24) port will be created sometime later and this process is then repeated again:
00042740 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Receive WM_COPYDATA / fCloseAPI(BOOL)=0
00042741 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] SetReturnBackData : Received COPYDATASTRUCT / FuncNumber=00008007(32775), Size=00000041(65)
00042742 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Call BlockingSDPCall() is returned.
00042743 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042744 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042745 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] BtCreateCOMM2 : InitCOMPort=COM6, CreateCOMPort=COM24
00042746 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] BlockingSDPCall : Send COPYDATASTRUCT / FuncNumber=00008000(32768), Size=00000036(54)
00042747 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Receive WM_COPYDATA / fCloseAPI(BOOL)=0
00042748 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] SetReturnBackData : Received COPYDATASTRUCT / FuncNumber=00008000(32768), Size=00000028(40)
00042749 21:56:47 [7208] [TosBtAPI(PCCSTBTP)] Call BlockingSDPCall() is returned.
00042750 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtGetCOMMInfoList2()
00042751 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042752 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042753 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042754 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042755 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042756 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042757 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042758 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042759 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM() -> BtCreateCOMM2()
00042760 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtCreateCOMM2()
00042761 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtGetLocalInfo()
00042762 21:57:52 [7208] [TosBtAPI(PCCSTBTP)] Call BtGetLocalInfo()
Maybe this helps to locate the origin of the CPU load problem of the Bluetooth Manager.
Thanks
Gerhard

I was having the same problem, and it turned out to be the Data execution prevention settings. I had turned on (System->Advanced->Data execution protection) the execution prevention for all programs, causing TosBTMng.exe to max out one processor core all the time. The solution was to add TosBtMng.exe to the list of exceptions and restart. I'd looked high and low for a solution - hope this helps someone else!

Adobe Reader 9.4-1 cause 100% CPU load on EL40 system

Hi,
when starting Adobe reader 9.4-1 on a Enterprise Linux 4 system the cpu load directly goes up to 100%
This happens on EL40 update 4, 5 & 8
I´m using gnome.
uname -a
Linux 2.6.9-89.0.0.0.1.ELsmp #1 SMP Tue May 19 04:23:49 EDT 2009 i686 i686 i386 GNU/Linux
cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 8)
Kind regards
Agent

I had the same problem on a RHEL4 system, I think starting with 9.3.1. The system requirements say only RHEL 5 is supported so I just uninstalled 9.3 and didn't look into it further.

Some web pages causing 100% CPU use of iexplore.exe since Flash update

I'm having a problem with certain Amazon.com pages hanging my
Internet Explorer 6 using Flash Player 10,0,12,36, causing 100% CPU
use for iexplore.exe and requiring me to End Task to quit. All the
pages effected have an interactive mouseover Size and Color chart
that intially says "Loading" but then says "Select Size and Color"
once loaded. One mouseovers the various color patches and size
options, each time giving item availability in that option. When
the pages hang the IE browser with 100% CPU use that chart never
gets to the "Select Size and Color" point, instead stuck at the
"Loading" status. This happens most times, but not every time.
Sometimes the pages load correctly, after a brief lag as it loads
the chart.
Amazon pages without this chart load fine.
The start of this problem coincides with updating Flash.
I can prevent the problem from happening almost every time if
I can quickly get my cursor into that chart area while the page
begins loading. If I allow the pages to load fully with no
interaction they will hang almost every time.
I have not noticed any problems on those same web pages using
Firefox using Flash Player 9,0,124,0
I also have not noticed any issues with other sites using
Internet Explorer either. (YouTube, QVC, CNN...etc, all OK.)
I had posted for assistance on the Experts Exchange site and
there was some debate on whether the chart was a Java or
Flash-based chart, so initially it was being approached as a
possible Java issue, so I removed all Java versions on the system
and installed various versions, but the same problem persists.
I've downloaded but not run the Flash Uninstaller, as I'm
reluctant to uninstall the Firefox Flash version without knowing
for sure I could install 9,0,124,0 again.
I've downloaded an archived fp9_archive.zip, which seems to
indicate the contained files flashplayer9r124_winax.exe (Internet
Explorer) and flashplayer9r124_win.exe (Netscape) would be versions
9,0,124,0 to install after running the uninstaller.
Can anyone check a few of the links below and see if the
"Select Size and Color" chart is Flash based? If so, would
executing the files listed above install 9,0,124,0 into my
respective browsers again?
http://www.amazon.com/FCS-Regular-7mm-Surf-Leash/dp/B00149XJ68
http://www.amazon.com/Womens-Classic-Short-UGG-Boots/dp/B00064NH8W/ref=pd_ecc_rvi_cart_3
http://www.amazon.com/Columbia-Sportswear-Womens-Benton-Springs/dp/B0006M6IQ2/ref=pd_ecc_r vi_cart_2
http://www.amazon.com/Ladies-Chenille-Zip-Cardigan-Sweater/dp/B001E0YJ0C/ref=pd_ecc_rvi_ca rt_4
XP IE 6 (error module : MSHTML.DLL)
Flash Player version 10,0,12,36
Firefox
Flash Player version 9,0,124,0
Thank you-
Vickie

I'm attempting to troubleshoot an issue with Amazon web pages
since I've updated my Flash player. I would appreciate if someone
could take a look at my initial post and advise if the issue seems
to be Flash related.
Thank you.
I'm having a problem with certain Amazon.com pages hanging my
Internet Explorer 6 using Flash Player 10,0,12,36, causing 100% CPU
use for iexplore.exe and requiring me to End Task to quit. All the
pages effected have an interactive mouseover Size and Color chart
that intially says "Loading" but then says "Select Size and Color"
once loaded. One mouseovers the various color patches and size
options, each time giving item availability in that option. When
the pages hang the IE browser with 100% CPU use that chart never
gets to the "Select Size and Color" point, instead stuck at the
"Loading" status. This happens most times, but not every time.
Sometimes the pages load correctly, after a brief lag as it loads
the chart.
Amazon pages without this chart load fine.
The start of this problem coincides with updating Flash.
I can prevent the problem from happening almost every time if
I can quickly get my cursor into that chart area while the page
begins loading. If I allow the pages to load fully with no
interaction they will hang almost every time.
I have not noticed any problems on those same web pages using
Firefox using Flash Player 9,0,124,0
I also have not noticed any issues with other sites using
Internet Explorer either. (YouTube, QVC, CNN...etc, all OK.)
I had posted for assistance on the Experts Exchange site and
there was some debate on whether the chart was a Java or
Flash-based chart, so initially it was being approached as a
possible Java issue, so I removed all Java versions on the system
and installed various versions, but the same problem persists.
I've downloaded but not run the Flash Uninstaller, as I'm
reluctant to uninstall the Firefox Flash version without knowing
for sure I could install 9,0,124,0 again.
I've downloaded an archived fp9_archive.zip, which seems to
indicate the contained files flashplayer9r124_winax.exe (Internet
Explorer) and flashplayer9r124_win.exe (Netscape) would be versions
9,0,124,0 to install after running the uninstaller.
Can anyone check a few of the links below and see if the
"Select Size and Color" chart is Flash based? If so, would
executing the files listed above install 9,0,124,0 into my
respective browsers again?
http://www.amazon.com/FCS-Regular-7mm-Surf-Leash/dp/B00149XJ68
http://www.amazon.com/Womens-Classic-Short-UGG-Boots/dp/B00064NH8W/ref=pd_ecc_rvi_cart_3
http://www.amazon.com/Columbia-Sportswear-Womens-Benton-Springs/dp/B0006M6IQ2/ref=pd_ecc_r vi_cart_2
http://www.amazon.com/Ladies-Chenille-Zip-Cardigan-Sweater/dp/B001E0YJ0C/ref=pd_ecc_rvi_ca rt_4
XP IE 6 (error module : MSHTML.DLL)
Flash Player version 10,0,12,36
Firefox
Flash Player version 9,0,124,0

100% CPU load but no clue in thread dump, EP. Win a bottle of champagne...

Hi,
We are suddenly facing 100% CPU load in our EP cluster (5 x 8-way Xeon multiprocessor machines). We have a serious performance problem that is burning a lot of our time and causes a lot of stress for over 3 weeks now.
We have taken tens of thread dumps from Application Nodes.
- In none of the thread dumps we see the Finalizer thread
running.
- From the garbage collector log we see that full garbage
collection runs occur very rarily (once an hour).
- We use the compacting garbage collector.
- In a lot of thread dumps we do not even see our own portal code in the stack traces of the threads!
- In Windows Task Manager we see the jlaunch.exe processes
consume all available CPU time.
- Portal users see a blank portal page when the CPU load hits 100%. When the load goes down again, things return to normal.
- There are no errors logged in any of the log files of the portal. We checked all of them. We expected a log full of errors somewhere but nothing even remotely interesting was found. Windows Event Viewer shows nothing either.
- The amount of sockets in CLOSE_WAIT status is < 10 on every machine in the cluster.
This forces me to conclude that something in the jlaunch.exe executable consumes the CPU time. This raises the following 3 questions:
- What does the mystifying jlaunch.exe do besides executing java.exe ?
- Why is the Java virtual machine launched by a custom executable like jlaunch (What is it that cannot be program med in Java) ? Can it be GZip compression ?
- If the problem is not caused by jlaunch.exe, then it must be caused by the JVM. What activity, invisible in thread dumps, is performed by the JVM that can cause the high CPU load ?
Our development- and support teams are desperate. All suggestions are welcome. The person that comes up with
the solution to our problem gets a nice bottle of champagne.
Regards,
Chris Twigt

Hi,
- What does the mystifying jlaunch.exe do besides executing java.exe ?
This is so that the startupframework can connect more easily and take control of the JVM in some situations
- Why is the Java virtual machine launched by a custom executable like jlaunch (What is it that cannot be program med in Java) ?
I assume when SAP release their JVM (in the next major release), that will be called directly.
- If the problem is not caused by jlaunch.exe, then it must be caused by the JVM. What activity, invisible in thread dumps, is performed by the JVM that can cause the high CPU load ?
Loads of thing, but there should be clues in the thread dumps. (the reason why your code is not in those thread dumps is that your code is only active during the processing of a particular request, unless you have a service, afterwards there are no trace of it as the thread which does the processing goes back to sleep)
I've experienced a similar situation with a an 6.40 portal, and it was then caused by the following:
1. User A comes logs in and sees that some cache timeout has occured , therefore it issues a SQL query which does a full table scan on a table of approx. 1 GB (on of the UME tables)
2. User B comes in just afterwards and also sees that the cache timeout has occured, and issues the same SQL query as User A
3. User C .... and so on untill the query from User A eventually finishes
So
1. Check database. Any big queries running ?
2. Check file activity, are there a lot of writing ?
3. Check network activity, especially to the state controller which is the weakest link
4. What about portal logs ? Any activity during the hang ?
Also, please provide one of the thread dumps for further analysis..
cheers
Dagfinn

Update 3.6.17 to 4.01 fails on add-on sequence (100% CPU load)

When updating Firefox 3.6.17 to 4.01 the update process fails in the add on updating phase (loses activity). Afterwards starting Firefox results in close to 100% CPU-load and no progress at all.
Since FF 4 no longer provides for a safe mode start, I can not check a FF4 start-up without his add ons. And removing the addon before the update was never required in Firefox before.
I noticed that the Microsoft NET Framework assistant 1.2.1 in FF3.6 is replaced by version 0.0.0. for FF 4 (looks for 3.5 SP1). Perhaps this MS jump in version is the root of this problem?
Extra: either disabling the NET Framework assistant, or moving to the addon to version 1.2.2. before updating solves this problem. Maybe this is not an addon problem after all, but FF4 instead?

Hi,
show install log 18 detail
and
show install log 19 detail
may help understanding what's going on.
Do you have enough space on disk0: ?
Thanks,
N.

VI causes high CPU load after several days of running

Hello,
I have a strange problem. I have craeted a test bench control VI and it runs on five PCs, controling five test benches. All PCs have almost the same hardware, same motherboard, same CPU, etc.
Normaly the CPU load is around 50% when I run the VI, but at one PC the CPU load climbs up to 85% after several days (maybe one week) of continuous running and the PC is almost tied up - the VI execution becomes very slow (10 times slower) and the mouse only moves very slowly.
First I thought that the PC has a problem but the problem dissapears as soon as I stop and restart the VI!
I don't even have to terminate LabVIEW - only my VI and then everything is okay again.
The problem does not seem to occur at the other four PCs, but I can not tell for sure.
The task manager says only LabVIEW causes the CPU load - swap file utilisation is little.
Is there a way to analyze what causes the high CPU load?
I Use LabVIEW 7.1 professional
Operating System: Win XP (SP 2 or 3 I don't remember)
P.S. I have no loops without wait-functions.
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Solved!
Go to Solution.

Do all PCs have the same amount of RAM?
What is the memory use over time as seen by the windows taks manager. Does it increase gradually?
An increase in resource usage if often cause by sloppy programming.
Do you grow arrays forever or constantly resize arrays in memory? (built array, insert into array, delete from array)
Do you often create new references and never close them?
What does the program actually do? In my opinion, a constant 50% CPU load seems too high for my taste. It means it would not even be able to keep up on slightly older hardware.
LabVIEW Champion . Do more with less code and in less time .

[workaround] 100% CPU load in GTK2 applications

I'm having strange issues with my GTK2 applications, namely Thunar and Thunderbird:
The gui is extremely slow and causes 100% cpu usage (just one core) for the process running Xorg.
For example, if I move the pointer between two buttons in Thunderbird I can watch the mouseover-effect being drawn - it takes almost a second!
No errors in Xorg.0.log, dmesg or xsession-errors, though. I'm using the proprietary NVIDIA-drivers and my system is up-to-date.
Any advice?
Thanks
lynix
Last edited by lynix (2012-12-20 15:31:16)

I compared the 1.12.2 vs 1.12.8 pkgbuilds and it seems that the culprit is the missing patch: cairo-1.10.0-buggy_gradients.patch
Seems definitely a packaging issue:
https://bugs.archlinux.org/task/32491
--edit
...but the root cause seems to be a bug in nvidia drivers. nouveau performs really well.
https://devtalk.nvidia.com/default/topi … gression-/
PKGBUILD in aur with patches:
https://aur.archlinux.org/packages/cairo-nvidiablob/
Please, mark this as solved or workaround.
Last edited by kokoko3k (2012-11-08 07:42:02)

100% CPU Load

Hi,
I've been running the trial of Lightroom on Win XP, Athlon XP 3.2Ghz w/1Gb RAM + 2 hard drives. 1 SATA drive (all my images) and a 10Gb IDE disk for the database.
I've read some of the FAQs and switched off every process that I don't need (AVG, iPod service etc). However, I've found that lightroom completely takes out my PC quite regularly (BSOD) and when it doesn't do that, it either crashes itself or sits there, doing absolutely nothing but taking 100% CPU load. It seems to be doing something in substrate.dll but I've googled and not found much information on it.
anybody have a similar experience? any ideas? From the odd bit of time I've had with the tool, I think it will be great, if only it didn't fall over at every opportunity.
cheers,
Matt

I have upgraded to Lightroom 1.1 and am having severe problems. I am running Windows XP SP2. When I try to access a photo in Library or Develop, it hangs for minutes "loading." Windows Task Manager indicates 100% CPU issues whenever I try to do anything. I see by this thread that I should increase the swap file (which for Adobe Photoshop CS3 is located on another disk on my laptop as hdd space is limited on my primary hard drive). I cannot find this setting for Lightroom. Also, should I try to delete all photos in the Catalog and reinstall all of them to improve performance? I am quite desperate. I did not have these problems w/ Lightroom 1.1, even with limited hdd space. Please advise. Thanks, Ina <[email protected]> wrote in message news:[email protected].. > Hi Matt -- > > One thing that might be revealing would be to run FileMon (get it from > sysinternals.com) as that may provide further clues to what LR is doing > with its time. Filtering the traffic by lightroom.exe and let me know what > activity you can see there. > > One question: do you have files offline (on external disks that aren't > plugged in, for example) and have automatically write XMP enabled (in > catalog settings, which can be reached via the preferences dialog or in > the file menu). > > Dan Tull > Lightroom QE, Adobe Systems

Start x11vnc -- X uses 100% cpu load

Hi.
I switched to arch64 and today I first used x11vnc and it is extremly slow. First I thought about the proxied connection but after looking into top I found X is using 100% cpu load. With arch32 everything worked as normal. Don't know whats the problem - any advices?
Regard, Andreas

Hmmm, I switched from official nvidia driver to xf86-video-nv and now works much better. I'll try it again with nvidia but not today...

Recently FireFox often has been causing 100% CPU usage and locks up until it finishes the process (various ones). Clearing cookies/cache didn't help. Any ideas?

Windows 2000 SP4, 1g RAM, Firefox 9.0.1
We keep IE6 and Firefox open simultaneously for 2 different mail accounts. Firefox was always much faster even with 3 or 4 tabs open, but for the past couple of weeks when trying to update a screen the CPU suddenly goes to 100% usage and of course nothing will move until the particular process is finished. Closing one or more tabs does not help. If I close Firefox completely with Task Manager CPU usage goes back down to nil. After restarting Firefox CPU usage may or may not go back up depending upon whether it tries to continue the previous task that was locking it up.
It did not do this with Firefox 3.6 but then again it didn't happen immediately after updating to 9.0.1 either.

100% CPU usage occurred most often toward the end of the working day when busy trying to print on-line postage. We don't have any memory-consuming plugins but according to the knowledge base articles Firefox memory usage can gradually increase during the day even if you do nothing. It seems that may be the problem so we close and restart Firefox more often now as that usually fixes the problem. However, if we get stuck on a particular website update that causes the CPU to to go 100%, we can always start Firefox without previous tabs so the update will stop, or simply use a different browser until we have time to let the computer play games with itself.
So our workaround of restarting Firefox turns out to be the final solution (until we find something better - will post it if we do). Vic

What is the best way to detect loss of OPC Server connection when using DSC Tags?

I'm using the DSC Module on a new project and I'm pretty impressed so far. The HMI Wizard has saved me quite a bit of time.
My application is configured where the DSC Tags are connected to remote OPC Server Tags.
The issue I'm having is that I cannot detect a loss of the OPC Server when the application is running. Read's of the front panel controls/indicators still return values and the little "connection" icon next them is still green. Even if the connection icon turned red it wouldn't help since the Front Panel is not visible when the main application is running. It is a Sub-VI that's in charge of OPC Data Interfacing. The rest of the application uses the data from the OPC Sub-
VI.
I cannot effect a change on the OPC Servers, so I need a method of detection when the Server is lost on my end.
Any ideas on the best way to do this?
Thanks,
Jim

Hi Jim,
Ideally, error-reporting and -handling should be the way to handle this. However, if errors are not reported/handled as is sometimes the case with OPC, a quick-n-dirty way to do this would be to check for a "heartbeat" signal from your OPC Server. This could be a boolean tag which toggles On and Off (or a counter ticking). You then read this Tag in DSC in a slow loop using the Read Tag VI (not the front-panel control). And keep track of the Changed? output from this Read Tag VI.
As long as the 'Changed?' output is true, you are receieving data from the OPC Server, and hence it's alive. You may add some deadband logic to wait for a specific period of time before declaring the Server's really dead!
Hope this helps,
K
halid

Small Acrobat file causes 100% cpu usage with v. 7.09

Using Acrobat professional 7.09
I have a small acrobat file (94k) that causes my cpu to peg at 100% I used acrobat professional to convert an eps file to a pdf file. Is there a general known issue that could be causing this?
Stephen

> Looking at the plot, you might want to consider trying to use a vector graphic in the future. It looks like a plot that you may have created in MATLAB or such. In that case, why not just print to the PDF.
I used matplotlib, which can generate png, eps, svg, or even pdf files. The pdf in question was converted by acrobat from eps, which has worked well for me in the past. I wish acrobat pro 7 could handle svg.
Stephen

Copying from USB NTFS device with Dolphin (KDE) causes 100% CPU usage

I am copying +/- 30 GB of Music files (flac) from my external USB HDD which is formatted as NTFS.
I have installed ntfs-3g and am experiencing near 100% CPU usage. What's wrong?
Additional info: I am using KDE and initiated the copying through dolphin. KDE's system monitor only shows CPU usage near 100%, but no processes in the process view could be responsable.
Thanks!

What mount options are used for that ntfs drive?
Edit: There are many similar threads but I couldn't find a solution other than trying out some kernel and cpufrequtils fun.
Last edited by karol (2011-01-16 18:12:15)

[10.1.2] Protected Mode causing 100% CPU Usage/Extra Processes on Win XP 32-bit?

Hello,
I'm not 100% sure if the two are related, but I have a client who was seeing 100% CPU usage using Adobe Acrobat Reader X 10.1.2 on Windows XP 32-bit and Firefox 11. The acrord32.exe process would hang around after closing the main window and eventually leading to tons of processes and his CPU at 100% use. I believe disabling Protected Mode may have solved this issue. I didn't see it documented anywhere so I figure I'd post about it here and see if anyone else was seeing this resolved as well.

I noticed 'only' 50 % CPU usage. Not during Reader usage with ~ 20 %, but it started after closing main window.
Two instances of acrord32.exe were created - the moment pdf was opened - of which one was using zero CPU.
After opening another pdf, 2 more processes were created, so 4 in total. Have seen 2 of them using 100 %.
Issue is easily recreated.
This is all in 10.1.3, no fix from Adobe, only THE fix from you: turning of Protected Mode!
After which now only one proces is created, with 1 to 3 pdf documents opened at same time.
This instance is then nicely shutdown after the last pfd is closed.

When writing DSC-tags, MSDE causes 100% CPU load

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