Where is iTunes (12.4) "continuous buffer size?

Similar Questions

• increase buffer size

  Hi all

  I am currently taking 6 pressure measurements, convert and then send HAVE up to 6 current AO, so I'll have continuous samples for each channel. I got error 200609, which wants to increase the size of buffer when buffer selected size: 1 and Minimum required Buffer Size: 2.

  I tried to correct this error by adding the output buffer configures and adding the constant 2, then it gives me error 200524, saying:

  Scripture cannot be performed because the number of data channels does not match number of channels in the task.

  When writing, provide data for all channels in the task. You can also change the task so that it contains the same number of channels as the written data.

  Number of channels of task: 1
  Number of data channels : 2

  I was stuck for a few days, now try what is recommended in the forums... what should I do to get this program to work? Fastener is the program. I just started to work with Labview a few weeks, so I'm a beginner.

  Any help is greatly appreciated!

  Try to remove the sample VI on the task of output clock and write NChan 1Sample inside your loop to update outputs.

• buffer size and sync with the cDAQ 9188 problems and Visual Basic

  Hi all, I have a cDAQ-9188 with 9235 for quarter bridge straing caliber acquisition module.

  I would appreciate help to understand how synchronization and buffer.

  I do not use LabView: I'm developing in Visual Basic, Visual Studio 2010.

  I developed my app of the NI AcqStrainSample example. What I found in the order is:

  -CreateStrainGageChannel

  -ConfigureSampleClock

  -create an AnalogMultiChannelReader

  and

  -Start the task

  There is a timer in the VB application, once the task begun, that triggers the playback feature. This function uses:

  -AnalogMultiChannelReader.ReadWaveform (- 1).

  I have no problem with CreateStrainGageChannel, I put 8 channels and other settings.

  Regarding the ConfigureSampleClock, I have some doubts. I want a continuous acquisition, then I put the internal rate, signal source 1000, continuous sample mode, I set the size buffer using the parameter "sampled by channel.

  What I wonder is:

  (1) can I put any kind of buffer size? That the limited hardware of the module (9235) or DAQ (9188)?

  (2) can I read the buffer, let's say, once per second and read all samples stored in it?

  (3) do I have to implement my own buffer for playback of data acquisition, or it is not necessary?

  (4) because I don't want to lose packets: y at - it a timestamp index or a package, I can use to check for this?

  Thank you very much for the help

  Hi Roberto-

  I will address each of your questions:

  (1) can I put any kind of buffer size? That the limited hardware of the module (9235) or DAQ (9188)?

  The samplesPerChannel parameter has different features according to the synchronization mode, you choose.  If you choose finished samples the parameter samplesPerChannel determines how many sample clocks to generate and also determines the exact size to use.  But if you use streaming samples, the samplesPerChannel and speed settings are used together to determine the size of the buffer, according to this excerpt from the reference help C DAQmx:

  

  Note that this buffer is a buffer software host-side.  There can be no impact on the material available on the cDAQ-9188 or NI 9235 buffers.  These devices each have relatively small equipment pads and their firmware and the Driver NOR-DAQmx driver software transfer data device to automatically host and the most effective way possible.  The buffer on the host side then holds the data until you call DAQmx Read or otherwise the input stream of service.

  (2) can I read the buffer, let's say, once per second and read all samples stored in it?

  Yes.  You would achieve this by choosing a DAQmx Read size equal to the inverse of the sampling frequency (during 1 second data) or a multiple of that of the other playback times.

  (3) do I have to implement my own buffer for playback of data acquisition, or it is not necessary?

  No, you should not need to implement your own stamp.  The DAQmx buffer on the host side will contain the data until you call the DAQmx Read function.  If you want to read from this buffer less frequently you should consider increasing its size to avoid the overflow of this buffer.  Which brings me to your next question...

  (4) because I don't want to lose packets: y at - it a timestamp index or a package, I can use to check for this?

  DAQmx will meet you if all packets are lost.  The default behavior is to stop the flow of data and present an error if the buffer of the side host DAQmx overflows (if, for example, your application does not pick up samples of this buffer at a rate equal or faster than they are acquired, on average).

  If, for any reason, you want to let DAQmx to ignore the conditions of saturation (perhaps, for example, if you want to sample continuously at a high rate but want only interested in retrieving the most recent subset of samples), you can use the DAQmxSetReadOverWrite property and set it to DAQmx_Val_OverwriteUnreadSamps.

  I hope this helps.

• the buffer size of DBA public has already reached the maximum size of 1703936.

  This error shows up in the journal of my 12 c database alerts.

  I guess it must be linked to some hidden settings.

  _bct_public_dba_buffer_size	0	total size of all dba buffers, in bytes, of the public change tracking
  _bct_initial_private_dba_buffer_size	0	initial number of entries in the private sector s/n change tracking buffer

  _bct_public_dba_buffer_dynresize	2	allow dynamic resizing of the stamps public s/n, zero to disable
  _bct_public_dba_buffer_maxsize	0	the maximum buffer size allowed for stamps public s/n, in bytes

  But when I check, it seems to be ZERO.

  Not sure where are from 1703936 value?

  Smit

  figured it's not default side effect the LOG_BUFFER parameter.

  Smit

• The log buffer size

  Hello
  Could someone please confirm that the following query returns log buffer size is correct?
  

  select 
     a.ksppinm name, 
     b.ksppstvl value, 
     a.ksppdesc description
  from
     x$ksppi a, 
     x$ksppcv b
  where 
     a.indx = b.indx
  and 
     a.ksppinm = '_ksmg_granule_size';

  The reason I ask is this log_buffer parameter in v$ parameter in my database has a value of 7024640, while the query return 4194304.
  
  Thank you.

  Hello..

  The '_ksmg_granule_size' "shows the size of granule not size log_buffer. If the total size of the SGA is equal to or less than 1 GB, then granule size is 4 MB. For greater than 1 GB EAG, granule size is 16 MB.

  What is the size of the SGA of your database.

  For my database SGA > 1 GB the output of the query is 16 MB
  {code}
  21:41:47 TEST > value col to a25
  21:41:56 TEST > col DESCRIPTION for a30
  21:42:05 TEST >
  21:42:05 TEST >
  21:42:05 TEST >
  21:42:05 TEST > select
  21:42:08 2 a.ksppinm name,
  21:42:12 3 b.ksppstvl value,
  21:42:12 4 a.ksppdesc description
  21:42:12 5 of
  21:42:12 6 x$ ksppi has.
  21:42:12 x $7 ksppcv b
  21:42:12 8 where
  21:42:12 a.indx 9 = b.indx
  21:42:12 10 and
  21:42:12 11 a.ksppinm = '_ksmg_granule_size ';

  NAME VALUE DESCRIPTION
  -------------------- ------------------------- ------------------------------
  granule _ksmg_granule_size 16777216 bytes in size
  {code}

  HTH
  Anand

• UDP receive default buffer size

  Hello

  I have a question about receiving data via UDP:

  Description of the problem:

  An application of part 3 is extract to a PACS + 2400 Hz measurement data.

  All samples are then sent to a UDP port locally.

  I then use a labview application to read the data and perform a treatment.

  The question is, at 2400 Hz I loose a lot of UDP packets because of receive buffer overflow, i.e. new data appear before all the old data is read.

  It's BI data ' in irregular bursts, 10 - 20 times every second.

  I tried increasying the Protocol UDP receive buffer according to this size:

  http://digital.NI.com/public.nsf/allkb/D5AC7E8AE545322D8625730100604F2D

  And it seems to fix the problem.

  But here is another question:

  If I change the size of the UDP buffer during execution of the application of the 3rd part, the 3rd team application will crash.

  So my question is:

  Is it possible to change the value default UDP receive buffer size in windows?

  Such that when the UDP connection is open, it will have a buffer size of 32768 for example, regardless of which application that accesses the UDP connection first?

  Y at - he got another code inside your task of reading as a ms of waiting? Is the task of reading as lean and mean as possible? When you increase the size of the buffer?

  I found this registry key. It may be worth a try. The post was old, it cannot apply to Win7.

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afd\Parameters \DefaultReceiveWindow (REG_DWORD) = 16384 (decimal)

• Buffer size of package on PowerConnect 6224

  Unfortunately I have been unable to find data about the size of packet buffer size for the switch. Someone has this secret knowledge? :-)Thanks in advance.
  

  Looks like the 62xx switch there is 6.1 MB / ASIC, which is then shared between all ports. The 6224 is a single ASIC and o the 6248 is dual ASIC.

  Hope this information helps.

• The HTTP buffer size

  In the API, RIM gives us the following code,

  void getViaContentConnection(String url) throws IOException {         ContentConnection c = null;         DataInputStream is = null;         try {             c = (ContentConnection)Connector.open(url);             int len = (int)c.getLength();             dis = c.openDataInputStream();             if (len > 0) {                 byte[] data = new byte[len];                 dis.readFully(data);             } else {                 int ch;                 while ((ch = dis.read()) != -1) {                     ...                 }             }         } finally {             if (dis != null)                 dis.close();             if (c != null)                 c.close();         }     }
  

  My problem is, I have a file which is usually about 10 k, what I download in my application. It returns-1 as the length so he then attempts to download the file byte-by-byte. It takes forever. I tried to add a fixed 1 KB buffer size, but the end of the file is cut off. What can I do to keep fast download speeds and the end of the capture file?

  Thank you

  Greg

  
  

• For a picture given where/how can I know a) file size, keywords) b are associated?

  Hello

  For a picture given where/how can I know a) file size, keywords) b are associated?

  Thank you very much

  Raphael

  Hi Raphael

  For any thumbnail, you can see the pixel dimensions displayed. Click on the image below. Choose your preferences by going to the menu:

  View > View Options

  If you have the keywording Panel open on the right you can see the keywords for any selected image.

  

• How can I get all the options for the creation of new titles? I'm stuck on a Board where it does not color or width/size options

  How can I get all the options for the creation of new titles? I'm stuck on a Board where it does not color or width/size options

  If you have not all panels in the Titler then go and reset the current workspace that is located under the window.

• Buffer size different sampling rate.

  Hello

  I'm new to Labview and me has encountered a problem.

  I did some measurements using two Renault and continuous type used samples. One device was NI 9239 and this one has a sampling frequency possible other than the size of buffer that I put. I put the size of the buffer of 3000 and the rate of possible samples of the device were 2941 and 3125.

  From what I understand, this type (continuous type of samples) the size of the buffer is full and send it to the computer.

  My question is this: my device sample rate is 3000 or 3125?

  Why do you ask? You say that you know that a sampling rate of 3000 is not possible.

• iTunes 12.3.3 font size are now too MUCH!

  I can't see even now the page complete!

  

  Hey psikofunkster,

  I understand that this font it looks like offshore when you look in iTunes. Let's see if we can get to the bottom of this.

  What comes to mind, is that this may be linked to the DPI settings you have for your computer. I found two articles from Microsoft talking about this. The first will explain that the text may seem more or less important depending on the setting. For best results, you need to change the DPI back close to the recommended value. This will put the police to their original size and you should be able to see everything in the iTunes Store.

  When you change the DPI on Windows 7 setting, some fonts can be resized too big or too small
  https://support.Microsoft.com/en-us/KB/2556182

  Make the text on the screen larger or smaller
  small http://Windows.Microsoft.com/en-us/Windows7/make-the-text-on-your-screen-larger-OU? v = t

  Let me know if it helps.

  Take it easy

• About update software - where is more readily available update file size indicated?  I have satellite internet (paying for GBs), live in a very rural area and need to plan the best cost/speed efficient location to perform the task.

  It's painful.  I thought I posted question already in the first search bar.  I don't understand why Apple in the description of software update in short does not show the size of the file.  I live very rural, have internet satellite and pay for GBS; I have to plan where it will be more cost effective speed. Am I missing a quick and easy answer?

  Also, can you recommend a management updates software APP where I can set the time to start and complete the download and installation. 02:00-08:00 Eastern time zone.  Thank you.

  Let them know by providing your comments

  Apple.com/Feedback

  the combo update is 1.47 GB

  https://support.Apple.com/kb/DL1859?locale=en_US

  as for your last question, no. I wouldn't use anything else that what already came with my mac to facilitate this.

• Current playback position exceeds the buffer size? VB6 with NIDAQmx 9

  I have an application written in VB6 that does HAVE and AO, with both using the Ctr0 internal as the clock to check that they are in sync.   It seems to work very well.  I use a USB-6212 and a recent version of NIDAQmx.

  I am tracking the current playback Position by calling DAQmxGetReadCurrReadPos_VB6 in the EveryNCallback routine.

  Strangely, the value for each call correctly increases the number of returned samples (for example, 128), but instead of round package when it reaches the upper limit of the buffer (for example 16 * 128) it keeps growing to infinity.  No error is reported by the call to DAQmxGetReadCurrReadPos_VB6 or anything else.

  Am I misunderstood something?  This function seems to be to just return the total number of samples read, not the position in the buffer.

  What I expect the value of the current to be playback Position:

  128, 256, 384, etc..  the limit of the buffer for example 16 x 128 = 2048 how he could start over at 1 (or zero depending on the way which you set up your berries).

  Van

  Hi afmstm,

  The behavior you're seeing is indeed good, and I agree that the description that it is misleading.  The current description says:

  "In the samples per channel, shows the current position in the.
  buffer.

  The description should be interpreted as:

  "In the samples per channel shows the current position the acquisition."

  So yes, for a relative position within your stamp, you must perform a modulo operation.

  That being said, it's not the same thing as 'total number of readings/a. Since the beginning of the program' as you say.  This would be the attribute Total of samples by acquired chain .  It is rarely a chance where these two alignment attributes.  For example, to read N samples successfully the following must be satisfied:

     Total samples by acquired channel - current read Position = N

  Another distinction is that you, the user can change the current Position of playback using the properties relative to and Offset .  By default you will read from the current playback Position , which creates the behavior your described.

  I know it can be confusing, but this level of manipulation of streaming is a very advanced concept of DAQmx.  Let me know if this raises questions or concerns more!

• Deterministic loop is delayed when rewriting continuously buffer of the OD

  Hi all!

  I use the RT for neurofeedback: analyze brain activity and then give hearing feedback from the user in this regard.
  My RT goal is a desktop pc and I use the structure of typical loop of deterministic + not deterministic.

  What I want is a continuous output pure sound. The amplitude of the signal is calculated in real time and is based on certain characteristics of the brain activity of the user. It should vary smoothly to avoid artifacts of type click.

  Since there is no sound screws in the RT module, I use DAQmx writing VI (analog output) with active regeneration. The sample mode is continuous.

  Before the first iteration, I generate a sine wave to an appropriate length (a few hundred samples) and amplitude 1. Then, at each iteration, I calculate the new value of the amplitude and multiply the sine wave with a linear ramp so that I get a smooth amplitude modulation. On the same iteration, I write this new piece of data with the writing DAQmx VI.

  With this approach my timed loop gets delayed periodically, even thought that the cpu load is less than 20%. Rewriting constantly buffer of the device seems to be the problem.

  Is there a smarter way to do what I want? For example: can I write the pure tone only at the beginning and then control the amplitude setting a gain? I saw that there is a property of gain ( http://zone.ni.com/reference/en-XX/help/370469AA-01/daqmxprop/attr118/ ) but I can't seem to find it. I'm using LV 9.

  I'll be very grateful for any ideas!

  Thank you!