Timing information

Is it possible to show timing information for a SQL query region like the SQL Workshop shows when I execute anything in it?
"Statement took 0.05 seconds"
How would pagination affect this? Would it show the time to fetch the currenly displayed set of rows?
Thanks

Great.
1. Where is this #TIMING# shortcut documented?
2. How does pagination affect this? Does it show the time to fetch the rows I see on the screen or everything?
Thanks

Similar Messages

Timing Information for Discoverer Reports: EUL4_qpp_stats.qs_act_elap_time

Hi All,
What is EUL4_qpp_stats.qs_act_elap_time measured in?
Milliseconds, centiseconds, seconds...?
Thanks,
kp

I believe it is secondsThanks!!

MyRIO FPGA FFT Express VI timing analysis for multiple input mode - trying to perform fft's on a 3-axis accelerometer

Hi Everyone!
Project Background:
I've been working with the myRIO FPGA in an attempt to generate an application capable of sampling a tri-axis accelerometer and performing an fft on each axis. I've successfully developed an application for a single axis, but attempting to duplicate the code to sample the second and third axes in parallel results in an estimated 150% resource utilization for the tiny FPGA's LUT's. Additionally, I'm looking to avoid sequentially processing each accelerometer input using triggers and a single fft block because that reduces my fft update frequency significantly (e.g. I can't calculate another fft for input 1 until I calculate an fft for inputs 2 and 3).
After reading up on the fft vi, I'm thinking that I can use the M-interval input indexes / Continuous output indexes Input/Output Index Pattern mode. My thought is that I can edit the vi to remove any math that "recombines" these three vectors into a single fft, resulting in 3 separate fft's. I'm also hoping that this process requires less time than using the sequential method described above.
The Questions:
1. Has anyone done an fft on three inputs using the myRIO at sampling rates > 20kHz and fft sizes of 1024 or larger? If so, I may just be lacking some proper resource management.
2. Does anyone know where to find timing information on the M-interval input indexes / Continuous output indexes Input/Output Index Pattern mode? The manual only provides timing diagrams for singel channel / single input modes. I don't want to waste my time modifying the vi if it will still take 3x as long (assuming modifying the vi is even a possibility).
Further Information:
I already have an application written that samples the accelerometers at >20kHz and then performs the fft on the main processor, but now I'm looking to see if it is possible to perform all signal processing on the FPGA side. The processor performs decently enough, but the timing is not as consistent as I would like it to be. Lastly, I am aware that the myRIO itself has a built in accelerometer, but I need to mount the accelerometer in an environment where the myRIO would probably be damaged and definitely cannot fit.
Any thoughts are much appreciated! The excessive FPGA compile times for this thing make the old guess and check method less appealing.
-Chris

Hi Chris,
Thanks for posting and the detailed background on the project! To answer some of your questions:
1. The FFT Express VI does use a significant amount of space. The FPGA on the myRIO is somewhat limited space-wise. Your best option may to implement the FFT for 1 channel on the FPGA and the other two on the RT side.
2. I converted the FFT Express VI to a subVI and I am not sure if you can trim too much code from it. The subVI is also very complex so re-working it would be a significant amount of work. I could not find much documentation on M-interval input indexes / Continuous output indexes Input/Output Index Pattern mode timing.
I hope that this helps!
Thanks,
Frank
Application Engineer
National Instruments

Best way of including timing in a waveform graph?

Hello all,
I've been toying with a number of different ways to do this, but so far I haven't had all that much luck. I've posted a picture so you can see what's going on. All I have is 4 plots that need to be plotted with accurate timing information on the x-axis. I guess I'm just wondering what the best way to go about this is. This method seems to be the most cluttered and messy that I've done, but is the only one I've gotten to have the actual correct timing info on the graph. I would put a wait in the loop, but I need to acquire this data as fast as possible. Thanks for any help!
Geoff
Attachments:
Graphing Test.jpg ‏74 KB

The display options you have chosen are OK on their own.
If you're looking to get more speed out of the code, try only graphing the data every 10 iterations or so. You can save the processed data (your waveforms) in a shift register where they can then be appended every 10 iterations.
This will obviously not clean up your code. The best way to clean up your code might be to simply throw the conversions you're performing into a sub-vi. Or create a time input for your "meters" VI and have thr processing done there with correctly-scaled values being outputted.
Hope this helps
Shane.
Using LV 6.1 and 8.2.1 on W2k (SP4) and WXP (SP2)

System Information Refresh

Hello, all
Q - Does the Air's "Refresh Information" for 3rd Party installations rely upon the latter's timely information refreshing? (An aside - Yes, I must update my Product Information!)
Adobe flash player's December version 11.9.900.170 automatically installed and operating correctly. Delay in Air's System Information Refreshing. I tried "Refresh Information", but this had no apparent effect. October Adobe version still listed.
Mid 2011 Air 10.8.5 32-Bit Chrome Default browser.
Many thanks

Hi Huang,
Can you check if the OSS Note below helps u remotely by any chance. It talks about a dump after an upgrade from 4.6 to ECC for this report...
Note 667876 - COOIS: Short dump when you select a variant
Rgds,
Sri
Award points if helpful

How to find patch timing details in oracle 11i applicaitons

Hai -
Today i applied 30 patches on our oracle 11.5.10.2 application.
I would like to see how much time it took for installing these patches. Could any one provide SQL Script to list out like patch name, patch start time and patch end time and host name.
Apppreciate your support on this.
Regards
VSH

Hi,
You can determine this from OAM or from adpatch "Job Timing Report".
Note: 181665.1 - Release 11i Adpatch Basics
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=181665.1
Check also the following documents for "AD Administration and AutoPatch Timing Information"
AD Administration and AutoPatch Timing Information
http://download-uk.oracle.com/docs/cd/B25516_14/current/acrobat/11iadproc.pdf
Oracle Applications Maintenance Utilities
http://download-uk.oracle.com/docs/cd/B25516_14/current/acrobat/11iadutil.pdf
If you need a query to show the timing, query AD_PATCH_DRIVERS table.
Note: 443761.1 - How to check if a certain Patch was applied to Oracle Applications instance?
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=443761.1
find applied patches.
Re: find applied patches.
Regards,
Hussein

Would like to store data in file for timing purposes

I have written this code in labview and is working like it should. It takes data of two transducers (analog signals) mounted 1.5 m apart.
The goal is to find out a precise time between the two rising edges. (attached pic)
I have collected two waveforms, one from
transducer 1 and one from transducer 2. Element 0 of the waveform
array is the data from transducer 1. Element 1 is the data from
transducer 2.
Both waveforms contain timing information as
part of their datatype.
I have tried to store the data as a txt file, but it only stores the last result of each transducer.
I would like to store the data, and process it in matlab to find a precise time between the rising edges or can this be done in the same VI I have created?
Any help is appreciated.
Attachments:
FinalShockSpeed.vi ‏32 KB
Picture1.jpg ‏25 KB

Use the "Write to measurement file.vi" and "Read from wavefrom file.vi "found in the "Programming->Waveform->Waveform file I/O pallete" for saving and retrieving the acquired data.
note that the file hence created will not be in the human readable form.
The precise rising time computation can also be done using labVIEW. Apply the same logic that you have done in matlab to create a subvi in LabVIEW\
Guru
Regards
Guru (CLA)

Find deleted information from user_jobs in Oracle 10g

Hello All,
I had scheduled a job in oracle 10g to run only once using dbms_jobs.
I wanted to find out how long the job took ( total_time) and what SQL it was running ( user_job.what) but the information about the job seem to get deleted from user_jobs once the job is completed.
Is there any other table/ view I can use to find these information?
Also, will it be possible to query the user_job as of previous time when the data was there? if yes, please also let me know what privilidges and setting is required. Currently, I just have basic developer priviledge.
Many thanks in advance for any help.

Information about how long a job took and what SQL it was running is not stored anywhere when you use DBMS_JOB. Once of the nice things about using DBMS_SCHEDULER rather than DBMS_JOB for job scheduling is that DBMS_SCHEDULER automatically logs timing information.
How long ago do you want to look at the data in USER_JOBS? If you are just trying to look back an hour or two ago, you may be able to use a flashback query. How far back you can go depends on your UNDO_RETENTION setting, the size of your UNDO tablespace, and the amount of UNDO that is generated by your system. The theoretical maximum you could flashback is 5 days, realistically, not many production databases can flashback more than a few hours unless someone has specifically identified the need to do longer-term flashback queries. The default UNDO_RETENTION is only 15 minutes. Plus, you're not guaranteed that you'll be able to flashback (that can be changed, but it's a pretty dangerous change because it will cause the database to stop if you run out of UNDO space).
Justin

How To Display Time Information in Report/Results?

Is it necessary to manually calculate the following?
Execution start time
Elapsed duration since Execution start
Step start time
Step completion time
If not, where are these results available within TestStand?
I would like to store the sequence absolute timestamp (from Windows), execution elapsed time, and step duration at the completion of a step. What is the proper callback to use for this?
I found the Engine.SecondsSinceStart property, but this does not correlate with the start of an execution. This only correlates to when the TestStand Engine was launched, not when the Sequence was started.
Any advice would be appreciated.
CLA, CTA
Solved!
Go to Solution.

Thanks for the digging, it appears I need a better shovel. I did a summary of relative timing information from our discussion:
Relative Time
Engine Seconds Running
RunState.Engine.SecondsSinceStart
Execution start time
Execution.SecondsAtStart
Elapsed duration since Execution start
RunState.Execution .SecondsExecuting
Step "n" start time
Locals.ResultList[n].TS.StartTime
Step "n" step duration
Locals.ResultList[n].TS.TotalTime
Step completion time
Locals.ResultList[n].TS.StartTime + Locals.ResultList[n].TS.TotalTime
Absolute Time Conversion
Use this offset to convert the relative time to absolute timestamps
RunState.Engine.SecondsSince1970UniversalCoordinatedTime
CLA, CTA

Timing loop speed

Hello,
Is there a limit to how fast a timed loop can run with an accurate timestamp? I would like to sample at *exactly* every 200 msec, however my output file indicates that it is ~ 200 +/- 10. Is there a better way to create my timestamp? BTW - the Init.vi notes the time in seconds since 1/1/2000 and all subsequent time is relative to the start time. THis is a desired output format that I cannot change. Thanks.
Attachments:
InitFile.vi ‏20 KB
CNAP Daq.vi ‏101 KB

Why are you using a timed loop?
In order to sample at precisely 200msec intervals, I suggest you use hardware timing and NOT software timing. The onboard clocks on the DAQ boards are much, much more accurate than anything you can do in software, timing-wise.
What I would do is get rid of the timed loop, use hardware timing for the DAQ task, and collect the data as a waveform. The waveform datatype contains timing information. Look at some of the examples that ship with LabVIEW. "Find Examples"..."Hardware input and output"..."DAQmx"..."Analog Measurements".
Your timestamp is only accurate to ~16msec because it obtains the time from the Windows clock, and that's how accurate the Windows clock is. That's the best it's ever going to do, so if you need better than that, use hardware timing for your DAQ.
Hope that helps a bit...
d

Export information from Flash

Hi all
I just wanted to know if anybody knows if it is possible to
export timing information, from the custom graph animator or
general information of animation key frames to either an xheet, or
even to have the information to be inported to after effects. A
rough animation can be timed out in Flash then the timing
information outputed and imported to After Effects, either manually
from an xheet or from an automatic import.
any thoughts on this would be great
Jeremy

You might want to look at the information about control references again. You pass a control reference to a subVI and that subVI will update the control as it executes. That is exactly what you are looking for. There have been numerous examples posted to the forum posted on control references but if you need another, here's a real simple one.
Attachments:
Main.llb ‏23 KB

How do I get accurate timing information in a waveform chart?

I am currently using a waveform chart to plot 4 different plots, each with it's own axis. The data for the chart is being generated by a while loop, which is gathering data from two different GPIB devices. The reason I use a chart is because I need to see the plotting being done real time. The problem is, I have no way of knowing how fast the while loop is running (or will be running), and thus no way to set an x-scale multiplier that provides accurate time. Is there a way around this? I would use the waveform data type, as it includes timing information, but that requires me to limit how fast the while loop can run, and I need it to be running as fast as possible, and also from what I understand, doesn't support multiple plots. Thanks for any help!
Geoff

Hi Geoff,
The big problem here is that Windows is not a deterministic operating system and therefore you will not know in advance how fast the while loop will run. You can run your while loop without a wait which will acquire as fast as Windows will let it, however you are still not guaranteed a fixed interval between iterations and you will most likely eat all your processor time on this one application. One option for you is to get a timestamp in every iteration of the loop and construct a 2D array. One column for the time values and another for the retrieved values. You can then plot this information on a XY graph. Best of luck!
Regards,
Chris J

Tone detection WITH time information??????

Hello everybody,
I record continiously sound with my soundcard(10000 Samples at 44100Samples/s.) In this waveform data I try to find 8.5ms sends long 12kHz pulses and the time when they occur.
I'm using the single tone information VI which enables me to detect the 12kHz pulses. But I need to know when the pulse exactly occurs. Unfortuanetely the VI doesn't output this information although it gets the timing information(time of the 1st sample and sample rate) of the waveform data from the sound input read VI.
I need to determine the time when the pulse occurs in the order of an accuracy of a couple of ms up to 20ms.
What can I do to make the VI to give the time information or is there a better VI(s) you can recommend?
Thank you very much,
Martin
additonal infos:
LABVIEW 8..2.1
notebook dell latiude d630
internal standard sound card
Message Edited by LabviewHans on 07-18-2007 04:53 PM

Hi Lynn,
unfortunately I cannot record output and input signal due to the given hardware.
But I found out that there stopping the sound input vi for sending a ping and starting the sound input vi right afterwards should be ok in terms of hardly missing milliseconds. But I still don't know how can I determine the index of the first amplitude after sending a ping. (If you use Sound input stop VI the data aquisition is stopped immediately, for example at the 3432nd sample out of 10000 samples, and after starting the data aquistion the 3433rd sample would be the first sample after the sending the ping. The problem is that I have no clue how to determine the index(in the example 3433) of the first amplitude value after sending the ping.)
I tried a couple of things to realize that. Here are the two most promising trys:
I checked the sound input vi and I found something like nCumulativeSamplesRead, which sounds very promising, but just shows a value which is a multiple of the number of samples(10000, 20000, 30000 and so on. (reminder:sound input configure is configured for 10000samples at 44100Hz)
Another solution could be the following one: I click at the Send Ping button and I give the sound input vi as much time as it needs to get all 10000 samples. When the VI got its 10000samples the while loop would go into the next interation to get the next 10000samples. But exactly at that point I want to stop the sound input vi. Then I would send the ping. Right afterwards I would start the sound input vi and I would miss hardly milliseconds AND the first value in my array corresponds to the (almost) first amplitude value after sending the ping. This would enable me to determine the distance with an accuracy of a few m, which is sufficient.
But I really need your help at that point because I tried a lot to force the sound input VI to get 10000samples before stopping it, but nothing worked. Do you know how to realize that in Labview?
I created a little test VI...
Thank very much,
Martin
Message Edited by LabviewHans on 07-26-2007 02:38 PM
Attachments:
whenToStop.vi ‏55 KB

Possible to get SQL execution timing?

Is it possible to get wall-clock timing information in thesame way as using "set timing on" in SQL*Plus?

I think the information you need is automatically displayed on the toolbar of the Sql Worksheet, to the right of the 'execute explain plan (F6)' and 'Clear (Ctrl-D)' buttons.

Timing over an ONS 15454 SONET link.

Hello,
Are there any provisioning restrictions on passing timing over a SONET link on the ONS 15454. Here is the senario; I have an OC-48 provisioned over Slot 4, port 1-1 on an MRC-12 card. On the Line provisioning tab, I am unable to set the ProvideSync check box. I need to use the link to time a distant end node. The far link is RX the STU SSM. The local Node is set for external timing with BITS 1 and 2 active and inservice w/PRS. Is there something I am missing?
TIA,
Steve

Steve,
The OC48 port is always providing timing information to the attached device in the S1 byte of the Line Overhead.
The ProvidesSync box is not an indication of whether the port is providing timing. Rather it is an indication that that port is being used as a timing source (Line Timing). If you go to Provisioning->Timing and select that slot/port as a Timing Reference the ProvidesSync box will be checked.
I will upload a Word document with screen shots. It should help clear things up.

Timing information

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