Sensor mapping VI Express performance degrades over time

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• WiFi speed degrades over time

  This is driving me crazy!

  So, I have a reliable internet connection.  I start the speed test and get ~ 85 Mbps down.  Then slowly, it's even worse, down for like .05mpbs.  Until I turn the wifi on my computer, then it is fast again.  It can be as fast as 10 minutes - 2 hours.

  #1 idea:

  Something is sucking my internet connection.

  I used every tool under the Sun, with more success with Little Snitch.  Nothing uses my connection when it is slow.  The fan is off.  Computer does nothing.

  #2 idea:

  Something on my network is using my connection.

  Speedtest.NET my girlfriend is fast.  My iPhone is fast.  Just my computer is slow.

  I blame this on my router for centuries, but it does not explain why my girlfriend is fast.  So I bought a new router (nine Airport extreme), nothing works.

  Yet once, turn/turn on wifi it solves every time.  Right of return up to 85mpbs

  I have tried everything I can find online, and I'm about to pull the hair last out of my head.

  Thanks for any help

  MacBook Air, OS X El Capitan (10.11.5)

  What is an independent separate cable from the router modem?

  Ah yes I see it now

  Speedtest.NET my girlfriend is fast.  My iPhone is fast.  Just my computer is slow.

  This corroborerait not a defective modem / intermittent

  Try running the AHT http://support.apple.com/kb/HT1509

• Why performance degrades overtime when insert/update/delete VARBINARY?

  I use TimesTen directly related. I created a table with a column of type VARBINARY (100000). My test program inserts a line of 8K bytes in this table, then updates that row with another 8K bytes, then finally deletes this line. If I do the insertion/upgrade to update / delete 10000 times in my program, the number of performances is about 8000 operations per second. But if I do 300000 times, performance is about 4000 transactions per second.
  
  I do not understand why the performance degrades over time? Anyone understand it?
  
  Thank you!
  
  Published by: user8224303 on June 18, 2009 12:41
  
  Published by: user8224303 on June 18, 2009 13:28

  Based on the workload that you describe, and the fact that you see LOG_BUFFER_WAITS increasing this is likely to be the main problem here. Increasing the size of the log buffer and the size of the file should reduce or eliminate this problem. Depending on the type of disk array and how it is configured, you can still see a performance impact when checkpoints occur if the log files are on the same set of disks than the newspapers. Let us know how you go.

  Chris

• Configuration sensor mapping VI window freezes every time that a. STL file is loaded

  The sensor mapping VI gets frozen every time I load a .stl file and the black screen does not appear any model of representation. On the other hand, the same model in a .wrl format works very well. Could someone help me with this problem?

  I have the evaluation version of LabVIEW 2010 SP1.

  Thanks in advance.

  Hi uxpro

  I think that you can have your .stl file in a binary format instead of an ASCI format, perhaps that is the reason of the gel

  Concerning

  Julio Mena

• Advice on the restructuring of code to avoid the downturn over time

  Hi, I am a new user of LabView, you want some advice on how to better structure the program I wrote and which is used to perform a hydrostatic test arrangement. Data are collected on a module of AI cDAQ 9207 and a cDAQ 9474 module is used to control the two valves that subsequently controls pressure in and out of the test Chamber. I enclose my first version of the reference code.

  What the VI is supposed to do when the user of the weapon system and strikes then the execution, the program switch will cause a transition of the test chamber through several States corresponding to the levels of different pressure for some time. Time curve vs pressure is written to a file of measures. I built using a state machine structure.

  My problem is, during the initial trial, when the duration of the test was about 5 minutes or so, the program went very well. However, once I started to test the length of the actual test of 2.5 hours, I noticed the program running slower and slower as time progressed to the point where it would take several seconds for each iteration of the loop, then by accident about an hour or two in the test. After scouring the articles and messages, I suspect the main culprit is the diagram of waveform and to a lesser extent DAQ assistant.

  While I need the loop structure data collection and case to run pretty quickly (preferably the order a few hundred s/s) I need the code to be able to react to changes in pressure in the room quickly enough, the actual data, that I need to store and display the graph can be as slow as a sample per second or even longer. My guess is at this point that I have to rebuild the program using some sort of architecture of producer/consumer, I'm looking for some advice on how best to structure the program.

  Data acquisition obviously belongs in the producer loop that will run at a fast enough pace and there will be a consumer loop that will run at a much slower pace for the Bulletin Board writing to the extent of the file vi, but where should I put the case of structure state machine which currently controls the valves? Should put in the loop of the producer since it must run at the same fast pace as the collection of data, so it can react to changes in pressure or should I build another loop of consumer for him? What other indicators (pressure and Boolean) and controls on the front panel, they should be on another loop operating at a medium speed I want to respond to a faster pace than the data to the chart/write the loop, but they do not need to be as fast as the data acquisition loop?

  Finally, I'm not quite sure what would be the best way to reduce the sampling rate of the data that I have in fact appear on the graph and the store in the file, it wouldn't make sense to create another task of measurement that samples at a rate below just for that purpose. Suggestions and advice would be greatly appreciated! Thanks in advance!

  Bob

  My guess is that if you monitor the use of memory over time, you see that going up, Yes? Everything is is always a good idea to get rid of the express VIs, I would look for the problem of slowdown in the structure of the case. You repeatedly open and never close tasks which are created using some DIO channels. Hnece each time that the loop more memory is allocated. Try to move creating channel screws out of the loop, then the tasks are created once before the start of the loop and then written to as required inside the loop - and don't forget to delete tasks once the loop over.

  Mike...

  PS: You are right with your comments regarding the structure of the producer consumer. Basically it break up as things get quickly (DAQ IO) that there is in a loop, while the user interface and the stuff that can take a long time (such as the data record) are in another loop. You can even have three loops with one for the acquisition of input data and the other for the digital output.

  PPS: Finally don't forget that even if the structure of consumption of the producer is usually represented with everything in a single diagram, there no need to be. I wrote a lot where each loop is in his own VI which is run dynamically, then the application starts.

• full waveform graph to calculate the area under the curve over time

  Hello

  If please find my attached VI and help me please for integration to get area undercut for my chart of waveform.

  I would like to find my wave power wind energy production chart oever within one month of time.

  I think I have to integrate to get the area under the curve and so I m now using tool integrated into labview attached.

  As I did not wait years for my result and so I want to make sure that the tool that I m using is correct.

  Please advise me what method I will use for my chart.

  Dominique says:

  I would like to integrate my table of power over time (table of power is on each interval of a minute) and the entire graph is one month. So, I'll put dt = 1?

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• Sensor mapping

  I'm trying to use a 3D picture control to draw a simple geometric object (a cube) and then draw the measures that took place within this object.  So, basically, a field of 4 d.  I read the workout at http://digital.ni.com/src.nsf/websearch/624DF39F2EBF492E8625738A006F0D42?OpenDocument&node=203014_us who showed me how to create the cube.  I also found this example of sensor mapping http://decibel.ni.com/content/docs/DOC-2059.  It's about what I want to do, but I don't have a template file.  Is there a way to add values of sensor for a 3D picture control when you do not have a .stl or .wrl file?  Does anyone have examples?  Thank you.

  Hello

  You can return to the example of trace of 4 d following the link:

  Plot of 4 d, a level 3 data from freedom from time
  http://decibel.NI.com/content/docs/doc-9291

  It seems the task you are trying to achieve? This example uses additional features of the 3D picture control palette, as opposed to the VI of mapping of the sensor. To properly place and restore the data from the sensor, we would need to generate a load of basic with the sensor mapping VI model file.

  Please post back you have any additional questions.

  See you soon!

• First Pro CC 2015.0.1 performance degradation

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  As soon as I 'Render effects in work area' the red bar turns green and I seem to be good to go.

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  I think I know the answer to that, but confirmation would be appreciated.

  (2) effects that I use on each clip, which struck such a deep performance: effects on the video itself, or on the audio?

  Again, I think I know the answer to that, but once again confirmation would be appreciated.

  
  

  Then:

  
  

  (3) is the Premiere Pro keep track of * all * another non-rendus sequences and clips, so that even if I'm working only a sequence at the same time, all previous, unreturned sequences (their presence is kept in memory, or in a file somewhere that is constantly struck on) are slow and cumulative performance, such as the harder I work and add new sequences , more performance degrade until the PP is simply unusable. Again, this is * not * a project complex, by any means. I do not understand why work on the eighth or ninth sequence causes such a performance deeply moved when working on the first or the second does not.

  If this is the case, a revision of software might be in order, such as immediate execution is only affected by the not rendered clip, one that is being developed at the moment.

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  Hello, I am working on an audio model. I'm doing a waveform similar to that which you can see soundcloud. I managed to program an expression to generate the waveform. But I have a problem with filling the waveform with a color based on the time. For example, see you on soundcloud how the waveform fills orange along the song? This is the concept, I am working on that. Here's what I have so far:

  

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• Want a ramp of output voltage over time and measure input 2 analog USB-6008

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• Get information from change of color over time

  Hi all

  I am new to LabView and on this forum, so I hope I'm in the right subforum. If this isn't the case, it would be nice if a mod could move this thread.

  My problem is the following:

  Let's say I have a white spot I want to observe with a camera. The color of the spot turns green over time and I want to acquire the photo, as well as to get the color intensity of green increase developing countries over time. I do not know what features I need to use to get there. Can someone me hint in the right direction? I think that it is at least possible in LabView.

  Thank your all for your help.

  Best regards

  Tresdin

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