Poor memory - rendered Management slows over time

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• LabVIEW running very slow over time

  I worked on a project at work for a device measuring the ability to couple with a shock absorber. For this, I have two transducers of torque, a small great. And a linear actuator in order to measure an angle using the cosine law. My problem is in the first 30 seconds, the program short grand after one minute or if it starts to slow down. Since this is a test device security is a top priority and I want to keep the delay to a minimum. The digital output in the while loop creates output that closes the linear actuator if the couple becomes too high. Any ideas would be helpful to speed up.

  Thanks for your time

  Carl

  Why you are creating a new task of data acquisition for output within the loop itself at each iteration?  This task of creating before part of the loop.

  You have 3 tables that you build permanently in the shift registers.  As they grow, the computer must be always more large chunks of contiguous memory for storing these tables.  I'm surprised that you're having problems after only 30 seconds, but not surprised you are having problems in the end.  I bet the reason why I listed above is the reason why it is happening so fast.

  Try to use the producer consumer archtitecture to pass the values to a parallel loop and write the data for the file condinuously it.

  I see in your instructions, that you tell somebody to hit the Cancel button to stop the execution of the code.  It's always a bad idea.  You should design your program as a machine of the State where you have different States for the race and setting up different settings.  A user should never hit the Abort button (you will fail to properly clean tasks).  And they should never really need to hit the run button or once the application is compiled into an executable file.

• Since the installation on my Windows 7 64 - bit installed, Firefox has constantly gotten slow that hour passes, hangs for 10-15 seconds at a time and just gets worse over time with updates and all.

  Since the installation on my Windows 7 64 - bit installed, Firefox has constantly gotten slow that hour passes, hangs for 10-15 seconds at a time and just gets worse over time with updates and all. It was fast when I installed first, but of the six latest mos has slown to a crawl.

  upgrade your browser Firefox 8 and try

  • getfirefox.com

• I2C communication slows down over time using USB-8451

  Hi all!

  I try to communicate via a device slave using a USB-8451 I2C and I noticed that after a while the communication speed slows way.

  I can send and receive data very well and apparently my system seems to work. But the problem is that over time the speed of data transfer slows down so much so that if I let it run all night it has slowed to a crawl in the morning. My ultimate goal is to gather data, draw and save every second and at the beginning it is easily achievable, but after 10-15 hours I can no longer collect data as fast I need. I'm not quite sure if this is a problem with my code LabVIEW, the NI USB-8451 box or the slave device. But if I stop running the LabVIEW program and start it again, everything returns to normal.

  The slave device is a personalized card with a microchip PIC which acts as a slave I2C and returns the data at the request of the master. I can't imagine anyone will be able to determine if this is a problem directly, but if we can rule out the other two (code LabVIEW or the NOR-8451) as the source of the problem so I know it's my slave device.

  I've greatly simplified the LabVIEW code that I used to collect data on I2C and I see even this gradual slowing down over time. Attached, it's that the very simplified VI and the data file, it produced. I only ran it for about 45 minutes, but from the beginning to the end we see again that the enforcement timeframe is rising.

  I hope I'm just doing something stupid, thanks in advance!

  -Aaron

  Aaron,

  Do not have the additional module responsible for these functions, but I'm sure I know whats going on.  It seems that each time through the loop 'OR-845 x I2C Create Configuration Reference.vi' creates a new reference.  After a while it will start to slow things down.  Better to open the reference before the while loop starts and spend just the reference in the loop.  Don't forget to close the reference after the loop stops.

• My WRT110 slows down gradually over time. Why?

  I noticed that my internet download speed became slow.  I tried using SpeakEasy and the speed of Comcast tested and found my upload and download speeds to be both less than 2 MB.  In the tests, I disconnected my WRT110 RangePlus Wireless Router and connected directly to the Comcast RCA modem.  I raised the speed races and got 21MB down and 4.4 upwards on two speed test sites.  I then be able to reset the WRT110 then reconnected to it.  So I ran the tests of speed and their return the same 21Mo down and 4.4 upward.  I came home a day later and tested and my download speed is 8 MB.  I came back today and it was 5MB.  I connected directly to the modem Comcast and returned to 22 MB down speed.  I then be able to reset the WRT110 and reconnected it and speeds were down to 22MB.  I have run this test twice over a period of days and got the same defacement of speed over time.  What could cause this?

  I think you can try to upgrade/re-flash the firmware on your router.

  Connect the computer to the router with the Ethernet cable. Download the latest firmware from the site Web of Linksys. Open the router configuration page and update the firmware on your router.

  After upgrading the firmware of your router, it is recommended that you must reset the router and reconfigure. Press and hold the reset button on the router for 30 seconds. Release the reset button and wait 30 seconds. Power cycle the router and reconfigure.

• Memory lost over time in my C: drive

  I noticed over time that I lost memory over time in my C: drive. I have about 500 GB, now showing only about 3 GB of space left. I have some downloads, but nowhere near 400 GB (I had pictures, but they deleted the hard drive that saved the GB)

  What would cause it to lose so Go? only from downloads?

  Was going to do a restore system to delete everything and start again see if that can solve the problem, but when I went to do this, he tells me that I need a backup of windows 7 Professional disc.  Went to the microsoft site, but could not find.

  Could I download another version of windows, and it will work correctly?

  Hello

  It is now called the disk space to avoid confusion with the RAM, which is the main memory.

  ____________________________________________

  This free program allows you to see what is taking place.

  http://www.Jam-software.com/treesize_free/

  You can clean your hard drive using these two methods.

  "Delete files using Disk Cleanup"

  http://Windows.Microsoft.com/en-us/Windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=Windows-7

  Using the free CCleaner program:

  http://www.Piriform.com/CCleaner

  In NO case use the registry cleaning Option in CCleaner

  Download, install, update and scan your system with the free version of Malwarebytes AntiMalware:

  http://www.Malwarebytes.org/products/malwarebytes_free

  See you soon.

• With rendering problems. Rendering started taking 10 times longer. I have pleanty of memory, I cleaned the media cache and now it will not even made a single wipe small transition. Goes at the beginning of the timeline, as if she has made the effect.

  With rendering problems. Rendering started taking 10 times longer. I have a lot of memory, I cleaned the media cache and now it will not even made a single wipe small transition. Goes at the beginning of the timeline, as if she has made the effect.

  I determined the cause. Damaged media. Copy old sequence in new chronology cross me if I return after any change in the timeline. I am able to export own media. No change to hardware and software recently. I'm running Windows 10. (Hatred, dating back to 7)

• More specific anti-aliasing prevents multiple images rendering at the same time after awhile

  Hi all.

  I am experiencing inconsistent memory, behaviour management when rendering my AE project that prevents me from making several images at the same time when some elements of film use accurate antialiasing.

  I have a processor 8-core i7 MacBook Pro with 8 GB of RAM and I am using AE CS5.5. I visited a project with several Illustrator layers imported to keep things nice and crispy. Here is a 3D with one camera, DOF, composition and they are continuously rasterized. On some of the vector assets I have to set the antialiasing for "More precise" in the dialog box interpret footage to address some problems with image quality. Here's what I noticed when rendering:

  1. when anti-aliasing on all assets of Illustrator is set on "Faster" return it without issues composition.

  2. I change the setting of antialiasing on some assets of the Illustrator to "More specific" to improve the quality of the image. Made of several images at the same time is off. Composition makes for a while, but eventually I get an error: "after effects error: unable to allocate enough memory for file antialias (50:5).

  3. to work around the error I load AE to empty the memory cache all 5 images or less via the Secret menu in the preferences. This prevents the error from happening and I can see the RAM being deallocated when from time to time as expected. This allows me to return the quality I need, but it is slower.

  4. in order to expedite things I light made simultaneous multiple images. I use the conservative settings: AE is to use only two hearts with 3 GB of RAM by heart (the maximum allowed). The rendering is accelerated. However, I see that the system "in use" RAM continues to increase at each image made up until the computer runs out, how AE automatically turns off made simultaneous multiple images and begins to display one image at a time. This does not happen whe all vector assets are defined to use fast antialiasing one I can make indefinitely with simultaneous multiple images rendering, but I don't get this way the desired quality. Please note that there is enough RAM for the carrots for multiple images rendering, but it seems as if having made a frame, the system is not free or reuse the memory when assets use specific anti-aliasing and will use another piece until there is no more.

  Also, I'm outputing to a sequence of images.

  Please help me to find a workaround for this problem. Thank you!

  This is probably a software design limitation (or bug) in the underlying code of Illustrator and there is no work around for this. You might dutifully report it here, but it's as good as it gets, and even when you do, you shouldn't be pregnant it be fixed anytime soon. In 12 years of use AE, that kind of thing never worked 100% right...

  Mylenium

• 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.

• Svchost size seems to me like svchost (s) becomes larger and larger over time (between restart).

  original title: svchost size

  It seems that svchost (s) becomes larger and larger over time (between restart).

  He/they tend to reach the top of the sort (PWS) in memory of my task manager.

  It automatically get rid of her... whatever... it is now for use by more than one process (when they are no longer used)?

  If not, is there a way for him to say?

  Hello

  Sometimes you try more than once (the link of MVP) and there may be a site
  issue.

  Try this link to my profile
  https://MVP.support.Microsoft.com/profile=D2CBAC3A-D59A-4085-BA97-22B57FD00DF2

  Here is the link to the signature
  https://MVP.support.Microsoft.com/profile/Rob1

  I tried to answer the question in paragraph 1 above. Unless you encounter
  a kind of system problem the SVChost in Taskmanager will vary, in particular
  so shortly after a restart. And when you use the computer SVChost entries will be
  adding and removing management tasks on the fly. Check the information in the upper part
  two links in my previous answer.

  I hope this helps and happy holidays!

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

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

  Hello

  I want to produce an analog voltage output signal that increases over time with a certain slope, which I'll send in a potentiostat and at the same time I want to read voltage and current (both are represented by a voltage signal) that I want to open a session and ultimately draw from each other. To do this, I have a DAQ USB-6008 system at my disposal.

  Creation of the analogue output with a linear ramp signal I was possible using a while loop and a delay time (see attachment). Important here is that I can put the slope of the linear ramp (for example, 10mV/s) and size level to make a smooth inclement. However when I want to measure an analog input signal he's going poorly.

  To reduce noise from the influences I want for example to measure 10 values for example within 0.1 second and he averaged (this gives reading should be equal or faster then the wrong caused by the slope and the linear ramp step size.) Example: a slope of 10 mV/s is set with a 10 step size. Each 0.1 s analog output signal amounts to 1 mV. Then I want to read the analog input in this 0.1 s 10 values)

  Because I use a timer to create the linear ramp and the analog input is in the same loop, the delay time also affects the analog input and I get an error every time. Separately, in different VI-programs (analog input and output) they work fine but not combined. I searched this forum to find a way to create the ramp in a different way, but because I'm not an experienced labview user I can't find another way.

  To book it now a bit more complicated I said I want to measure 2 input analog (one for the voltage of the potentiostat) signals and one for the current (also represented by a voltage signal) and they should be measured more quickly then the bad of the analog signal. I have not yet started with because I couldn't read on channel work.

  I hope someone can help me with this problem

  An array of index. You want to index the columns for a single channel.

• Plotting the amplitude of a spectral peak over time

  Hello

  I am creating a VI where the acquired continuously DAQ, plots and save a waveform in millisecond delay (which is already done in this case), then takes this waveform, finds a specific pic (probably the first) and trace the amplitude of this pic over time (+ 30 minutes, one point each scan which is obtained). Essentially, I have a detector quickly attached to a chromatograph, and I want to select a single ion and monitor the amplitude of this ion. I can draw the waveforms along with it in post processing, but I want to do is to have the 'slow' constantly plot to update and display when it moves through time. Joined the VI will go in, using IMS software V1.3.vi, the paragraph is the "GC" Mode it seems I should use the "peak detect.vi.", but I'm not familiar with this operation, and so I don't know how to show a constantly updated graphic or remove the amplitudes and draw. Thank you for your help,

  <><>

  Eric-WSU wrote:

  I get an amplitude on plot of time, but it does not appear until after all the iterations are stopped

  I have not watched your VI (because I'm in a previous version of LabVIEW), but it's probably because your graphic is outside the loop.

  Here's how you can get a graph of the peaks (all vertices, by iteration):

  

  Or if you want to only a certain PEAK (and how this pic changes with the number of iterations):

  

• Over time fill color

  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:

  

  I want the blue bar to move to the right over time, but I want only the white parts of the wave to turn blue it progresses (the rest of the hidden solid blue). How would I go to do this? My knowledge in After Effects is limited, so any help is GREATLY appreciated! Thank you

  Please let me know if you need more information

  So just to clarify you are trying create a representation of levels for the duration of an audio file and not an animation audio frequency analysis. If that's what you do just before compose hundreds of layers, or nest the comp in your main comp, then use the cache by approach. If it was me I would probably just import the audio layer in the comp, press the L key twice to reveal the audio waveform, press on the ~ key to make complete timeline screen, expand the waveform, take a screenshot, add the screenshot to the model, apply Keylight, then add a shape layer below the screenshot set the screenshot as a reverse alpha cache approach for the animated gradient and be done with it. This model should be nested in my main computer to complete the effect.

  

  If I wanted a different look for the waveform I edit the screenshot in Photoshop or use a Premiere Pro or any other program to capture a screenshot of the wave. Since you did all the work of your hundreds of layers I just would compose before them, place a layer of shape with a gradient animated below the pre-comp and put in place the track matte.

• Sum over time

  Hello
  
  I'm doing something that I think is quite a common request, but after scratching my head and browsing the web I am still not close to a solution.
  
  I am running:
  Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
  
  I'm looking to summarize a set of values, taking into account the two parent grouping and start and end dates.
  I use for the parent of grouping:
  
  + Sum ([value]) over (Partition by order [Parent] [parent], [Child]) +.
  
  I was hoping to expand that AMOUNT to manage also the start and end dates, so the end result would contain a sum of the values for each different period of time.
  
  For example, using the data below I try to sum up the prices of the components of a car over time:
  
  line, product, component, rate, start date, end date
  1, car, chassis, 180, 01/01/2000, 31/12/2009
  2, car, chassis, 200, 01/01/2010, 01/01/2050
  3, car, engine, 100, 01/01/2000, 01/01/2050
  
  
  Notice that there is a price for "Chassis" of item change, so the output, I'm looking for is:
  
  
  line, product, component, rate, start date, end date, sum
  1, car, chassis, 180, 280 01/01/2000, 31/12/2009,
  2, car, engine, 100, 280 01/01/2000, 31/12/2009,
  3, car, chassis, 200, 01/01/2010, 01/01/2050, 300
  4, car, engine, 100, 01/01/2010, 01/01/2050, 300
  
  
  But in reality, everything I need is:
  
  Row, product, start date, end date, sum
  1, car, 01/01/2000, 31/12/2009, 280
  2, cars, 01/01/2010, 01/01/2050, 300
  
  Preference the query would be a view instead of a stored procedure, and he must be able to manage many 'products', 'components' and start and end dates.
  
  
  All help most appreciated and if need more info, please let me know.
  
  Thank you
  Julian

  Hi, Julian,.

  I think I understand.
  You want to use the lump SUM, not the analytical SUM. The analytical function you would give a total for the entire product, but would keep the individual lines for each component. But you don't want individual lines for each component; you want to just one line for each product and the period. The tricky thing with this problem is to set a period. In the following query, a new period for a given product begins when there is a start_date or an end_date for this product, which is calculated in the sub_query called periods.

  The following subquery, active_ratews, see what rate applied during this period, seeing the lines in product_rates overlap with the lines in periods. Two overlap if everyone will start before the other ends. If it's not obvious to you (and it is of course obvious to me when I heard it), then look at it this way: two ranges are not overlapping if (and only if) one end before another begins.

  The result of the ios active_rates close enough of what you posted as intermediate results. The main request that added all the lines for the same product and timely.

  WITH   period_start_points          AS
  (
       SELECT  product
       ,     start_date
       FROM     product_rates
      UNION
          SELECT  product
       ,     end_date + 1     AS start_date
       FROM     product_rates
  )
  ,     periods          AS
  (
       SELECT  product
       ,     start_date
       ,     LEAD (start_date) OVER ( PARTITION BY  product
                                        ORDER BY      start_date
                             )          AS end_date
       FROM    period_start_points
  )
  ,     active_rates     AS
  (
       SELECT     p.product
       ,     p.start_date
       ,     p.end_date - 1     AS end_date
       ,     r.component
       ,     r.rate
       FROM     periods          p
       JOIN     product_rates     r  ON     p.product     = r.product
                         AND     p.start_date     <= r.end_date
                         AND     r.start_date     <  p.end_date
  )
  SELECT    ROW_NUMBER () OVER ( ORDER BY  product
                               ,           start_date
                      )  AS row_n
  ,       product, start_date, end_date
  ,       SUM (rate)             AS total_rate
  FROM       active_rates
  GROUP BY  product, start_date, end_date
  ORDER BY  product, start_date
  ;
  

  Viguierkevin wrote: in addition, a quick query to improve my ads - how indent without doing ittallic of text, and how to code a different font?

  This site normally does not display multiple spaces in a row.
  Whenever you post the text formatted (for example, the results of the query) on this site, type the 6 characters:

  \

  (small letters only, inside curly brackets) before and after each section of formatted text, to preserve spacing.  Everything between the \
  

  tags appear in a police fixed-width.

  Published by: Frank Kulash, January 4, 2012 14:09
  Added explanation.

• Can I change the new memory and at the same time to replace the Rams?

  Can I change the new memory and at the same time to replace the Rams?

  If a MacBook Pro RAM and drvie hard can be modified/improved depends on the submodel and we do not know yours. There are dozens of variations of the MacBook Pro issued since 2006, and you do not want guessing us!

  Please do "about this Mac" in your Apple menu to get this:

  

  Notice the line that I have highlighted with the red arrow. Please tell us what your computer has in the thr same place. However, do not post any serial number.

  With the exact submodel we can better advise you of any available upgrade paths.