Estimate time delay during execution

Hi, everyone.
Currently, I have a VISA program for reading signals from a GPS receiver. From the program, I want to measure time delay of execution, i.e. time delay between start and end as shown in the jpg. Are there any vi in LabView facilitating this purpose? Thanks a lot.
Regards,
yukfai88
Solved!
Go to Solution.
Attachments:
VISA.vi ‏12 KB
Estimate delay.jpg ‏54 KB

See attached VI and below screenshot which shows how to use it in your code. Just one solution...
Attachments:
Elapsed time LV80.vi ‏27 KB

Similar Messages

Urgent: Please help. how to solve the time delay during buffer read and write using vc++

I need to continuously acquire data from daqmx card, write into a file and at the same time corelate (in terms of time) the data with signals from other instruments. The current problem is that there is time delay during read and write data into buffer,thus causing misalignment of the data from multiple instruments. Is there a way to solve the delay? or Is there a way to mark the time of the data acquisition in the buffer? If I know the starting time (e.g. 0) of data acquisition and sampling rate (e.g. 1kHz), can I simply add 1ms to each data sample in the buffer? The current code is shown below.
void DataCollectionWin::ConnectDAQ()
DAQmxErrChk(DAQmxCreateTask ("", &taskHandle));
    DAQmxErrChk(DAQmxCreateAIVoltageChan(taskHandle,"Dev1/ai0,Dev1/ai1,Dev1/ai2,Dev1/ai3,Dev1/ai4,Dev1/ai5,Dev1/ai16,Dev1/ai17,Dev1/ai18,Dev1/ai19,Dev1/ai20,Dev1/ai21,Dev1/ai6,Dev1/ai7,Dev1/ai22","",DAQmx_Val_Cfg_Default,-10.0,10.0,DAQmx_Val_Volts,NULL));
  DAQmxErrChk(DAQmxCfgSampClkTiming(taskHandle,"",1000.0,DAQmx_Val_Rising,DAQmx_Val_ContSamps,60000));
  DAQmxErrChk (DAQmxRegisterEveryNSamplesEvent(taskHandle,DAQmx_Val_Acquired_Into_Buffer,50,0,EveryNCallback,NULL));// Every 50 samples the EveryNSamplesEvent will be trigured, to reduce time delay.
  DAQmxErrChk (DAQmxRegisterDoneEvent(taskHandle,0,DoneCallback,NULL));
  DAQmxErrChk (DAQmxStartTask(taskHandle));
int32 CVICALLBACK EveryNCallback(TaskHandle taskHandle, int32 everyNsamplesEventType, uInt32 nSamples, void *callbackData)
DAQmxErrChk (DAQmxReadAnalogF64(taskHandle,50,10.0,DAQmx_Val_GroupByScanNumber,data,50*15,&read,NULL));
   //memcpy(l_data,data,6000);
SetEvent(hEvent);
l_usstatus_e[0]=g_usstatus[0];// signals from other instruments that need to be corelated with the data from daq cards.
l_optstatus_e[0]=g_optstatus[0];
if( read>0 ) // write data into file
   //indicator=1;
for (i=0;i<read;i++)
{  //fprintf(datafile,"%d\t",i);
  fprintf(datafile,"%c\t",l_usstatus_s[0]);
  fprintf(datafile,"%c\t",l_usstatus_e[0]);
        fprintf(datafile,"%c\t",l_optstatus_s[0]);
  fprintf(datafile,"%c\t",l_optstatus_e[0]);
          fprintf(datafile,"%.2f\t",data[15*i]);
//   sprintf( pszTemp, "%f", data[6*i]);
// pListCtrl->SetItemText(0, 2, pszTemp);
    //pWnd->m_trackinglist.SetItemText(0, 2, pszTemp);
     fprintf(datafile,"%.2f\t",data[15*i+1]);
     fprintf(datafile,"%.2f\t",data[15*i+2]);

Hello kgy,
It is a bit of a judgment call. You should just choose the board that you think has the most to do with your issue. For example, this issue was much more focused on setting up your data acquisition task than the Measurement Studio environment/tools, so the MultifunctionDAQ board would have been the best place for it. As for moving your post to another board, I do not believe that is possible.
Regards,
Dan King

Does anyone know how to display (in LabVIEW) the memory use during execution of an image and data acquisition VI to predict when it is time to cease the acquisition to prevent the program crashing?

Does anyone know how to display (in LabVIEW) the memory use during execution of an image and data acquisition VI to predict when it is time to cease the acquisition to prevent the program crashing?
I am acquiring images and data to a buffer on the edge of the while loop, and am finding that the crashing of the program is unpredictable, but almost always due to a memory saturation when the buffers gets too big.
I have attached the VI.
Thanks for the help
Attachments:
new_control_and_acquisition_program.vi ‏946 KB

Take a look at this document that discusses how to monitor IMAQ memory usage:
http://digital.ni.com/public.nsf/websearch/8C6E405861C60DE786256DB400755957
Hope this helps -
Julie

Does anyone know how to display (in LabVIEW) the memory use during execution of an image and data acquisition VI to predict when it is time to cease the acquisition to prevent the program crashing?

Does anyone know how to display (in LabVIEW) the memory use during execution of an image and data acquisition VI to predict when it is time to cease the acquisition to prevent the program crashing?
I am acquiring images and data to a buffer on the edge of the while loop, and am finding that the crashing of the program is unpredictable, but almost always due to a memory saturation when the buffers gets too big.
I have attached the VI.
Thanks for the help
Attachments:
new_control_and_acquisition_program.vi ‏946 KB

got these vi's off ni site a while ago - see if they help
Attachments:
Memory_Monitor.zip ‏132 KB

Loading test steps during execution

Hello,
I am using the operator interface from the example. I have modified to suit my application. I run the test using the Single Pass entry point. I have 46 steps in my main sequence. When I press the Single pass execution, Initially it takes a lot of time (I think it compiles all the steps) to start the actual execution.
Why does it take long time to start execution? Is it possible to configure test stand such that it compiles each step as and when it reaches it?
Regards
Gopal

Hey Gopal,
As Ray said, TestStand does not actually compile your modules. That being said, most likely this load time that you're seeing at the beginning of execution is due to your load options set to load the module when execution begins. If you go to the step properties, notice under "Run Options" there's a "Load Option" drop-down. You can look at the help for a description of this property, but in general this setting refers to when the module is loaded into memory. For time-critical tests, you would want to load either at the beginning of execution or when the sequence file is loaded (as this would extract the load time from the step so that the step could be executed quickly); this is especially important if you are looping on a particular step. There is an option to "Load dynamically" as well. With this option, you would see a slight delay before each step during which its module is loaded - rather than a longer delay at the beginning (in which all step modules are loaded).
Note that the default is "Preload when execution begins"; that is why I'm guessing that this is responsible for the delay that you're seeing.
Thanks,
Andy McRorie
NI R&D

How can I show and hide an image or a decoration on the front panel during execution of the vi?

Hello,
I've made a user interface with a little grafic description.
That description should change depending on user actions, e.g. if the user switches a button, some lines should disappear and some other lines should appear.
I thought some decorations could be shown and hidden via something like a property node, but that is not possible. Images can also not be hidden during execution of the program.
Is there any posibility to change a grafic user interface?
Johannes
LV 7.1
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Attachments:
LV_Grafic.JPG ‏21 KB

Thanks to Tim for drawing what I suggested as option while I had some real work to do.
There is a trick of overcoming the index problem that was presented/devloped in the forum in the last month's:
You can place the decoration inside a cluster, so you can use the lable of the cluster to adress the decoration you want. The data type of the cluster doesn't mather for this, so you will hide the control/indicator. And you colour the cluster transparent (hint: right click with the coloring tool and use space to toggle).
Felix
www.aescusoft.de
My latest community nugget on producer/consumer design
My current blog: A journey through uml

ORA-04088: error during execution of trigger

Error Description :
We have more than 100 of records in a csv file which we are processing through a script. At the first execution let
say it generates trigger exception for five records ... when I execute the script second time those five records
are not throwing any exception but may be some other records. But consecutive trigger exception is not happening for any record . If a particular record is throwing exception at first attempt then in the second attempts it's not throwing the trigger exception.
Input file
PROPRTY_ID,NAME,OLD STREET,CITY,STATE,ZIP,NEW STREET,NEW CITY,NEW STATE,NEW ZIP
88527091,SAM PAUL SUMMU ,1061 XYZ,CITY1,ST,95626,5512 XX YY ZZ,TOWN,PA,12345-9812
Error :
88527091,SAM PAUL SUMMU ,1061 XYZ,CITY1,ST,95626,5512 XX YY ZZ,TOWN,PA,12345-9812 - PROPERTY Update Error : ORA-00001: unique constraint (PROD.PK_AUDIT_LOG) violated
ORA-06512: at "PROD.PROPERTY_AUD", line 159
ORA-04088: error during execution of trigger 'PROD.PROPERTY_AUD'
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> desc property
Name                                      Null?    Type
PROPERTY_ID                               NOT NULL NUMBER(20)
TYPE_CODE                                          VARCHAR2(10)
TYPE_PREFIX                                        VARCHAR2(10)
DWELLING_TYPE_CODE                        NOT NULL VARCHAR2(10)
DWELLING_TYPE_PREFIX                      NOT NULL VARCHAR2(10)
STREET_NUMBER                                      VARCHAR2(25)
STREET_DIRECTION                                   CHAR(2)
STREET_NAME                               NOT NULL VARCHAR2(45)
UNIT_NUMBER                                        VARCHAR2(15)
CITY_CODE                                          VARCHAR2(10)
STATE                                     NOT NULL CHAR(2)
ZIP_CODE                                           VARCHAR2(10)
UNIT_TYPE                                          VARCHAR2(10)
UNIT_PREFIX                                        VARCHAR2(10)
COUNTY_CODE                                        VARCHAR2(10)
COUNTRY_CODE                              NOT NULL VARCHAR2(10)
SQUARE_FEET                                        NUMBER(6)
NUMBER_MOTHER_LAW_UNITS                            NUMBER(6)
YEAR_BUILT                                         DATE
PROPERTY_VALUE                                     NUMBER(12)
ZIP_PLUS_4                                         VARCHAR2(4)
SFI_REQ_FLAG                                       CHAR(1)
LAST_MODIFIED                             NOT NULL DATE
LAST_MODIFIED_BY                                   VARCHAR2(31)
STANDARDIZED_STATUS                                VARCHAR2(10)
STANDARDIZED_DESC                                  VARCHAR2(200)
SQL> desc audit_log
Name                                      Null?    Type
SEQ_NO                                    NOT NULL NUMBER(20)
TABLE_NAME                                         VARCHAR2(31)
USER_STAMP                                         VARCHAR2(31)
TIME_STAMP                                         DATE
TRAN_CODE                                          CHAR(2)
RECORD1                                            VARCHAR2(2000)
RECORD2                                            VARCHAR2(2000)
FLAG_FLD                                           CHAR(1)
SFI_FLAG_FLD                                       CHAR(1)
ERROR_NUMBER                                       NUMBER
Update Query which is getting executed :
UPDATE PROPERTY
SET DWELLING_TYPE_CODE = 'SFR',
DWELLING_TYPE_PREFIX = 'DWELLING',
STREET_NUMBER = NULL,
STREET_DIRECTION = NULL,
STREET_NAME = ln_new_street_name,       -- <From input file>
UNIT_NUMBER = NULL,
CITY_CODE = ln_city_code,               -- <From other Table>
STATE = ln_new_state,                   -- <From input file>
ZIP_CODE = ln_new_zip_code,
UNIT_TYPE = NULL,
UNIT_PREFIX = NULL,
COUNTY_CODE = ln_county_code,           -- <From Other table>
COUNTRY_CODE = 1,
ZIP_PLUS_4 = ln_zip_plus_4            -- <From Input file>
WHERE PROPERTY_ID = ln_property_id;   -- <From Other table>
*NOTE :* Property.LAST_MODIFIED field is auto populate through other trigger. It does not causing any problem.
This might be helpful :
SQL> select OWNER, CONSTRAINT_NAME, TABLE_NAME,COLUMN_NAME from dba_cons_columns where CONSTRAINT_NAME='PK_AUDIT_LOG';
OWNER                          CONSTRAINT_NAME                TABLE_NAME COLUMN_NAME
PROD                           PK_AUDIT_LOG                   AUDIT_LOG          SEQ_NO
PROD_ARCH                      PK_AUDIT_LOG                   AUDIT_LOG          SEQ_NO
SQL> select SEQ_NO, trim(RECORD1), trim(RECORD2),TIME_STAMP
from audit_log where RECORD1 like '%BUTTE%' order by TIME_STAMP;
SEQ_NO
1675677212
TRIM(RECORD1)
00000000000031814095...SFR       .DWELLING ...5512 BUTTE VIEW CT                           ..15532
    .CA.95765     ...1377      .1         .....5000..20100922.SUSMSAHA                       ..
TRIM(RECORD2)
00000000000031814095...SFR       .DWELLING ...5512 BUTTE VIEW CT                           ..15532
    .CA.95765     ...1377      .1         .....5000..20100922.SUSMSAHA                       ..
TIME_STAMP
22-sep-2010
Trigger Body which is fired and throwing the exception :
create or replace trigger PROPERTY_AUD
before insert or update on PROPERTY
for each row
declare
rec1            varchar2(2000);
rec2            varchar2(2000);
tcode           char(1);
ln_seq_id       NUMBER:=Null;
ls_sql VARCHAR2(2000):=Null;
begin
select temp_audit_seq.nextval into ln_seq_id from dual;
rec1 := null;
rec2 := null;
     if user = 'NONREP_USER' then
        return;
     end if;
     if (dbms_reputil.from_remote = FALSE) then
          :NEW.last_modified := sysdate;
          if (user = 'SALESFORCE_SYNC') then
                  :new.last_modified_by := NVL(:new.last_modified_by,USER);
          else
               :new.last_modified_by := user;
          end if;
     end if;
if inserting then
rec1 :=
LPAD(:new.PROPERTY_ID, 20, '0' ) || '.' ||
RPAD(:new.TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.STREET_NUMBER, 25, ' ' ) || '.' ||
RPAD(:new.STREET_DIRECTION, 2, ' ' ) || '.' ||
RPAD(:new.STREET_NAME, 45, ' ' ) || '.' ||
RPAD(:new.UNIT_NUMBER, 15, ' ' ) || '.' ||
RPAD(:new.CITY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.STATE, 2, ' ' ) || '.' ||
RPAD(:new.ZIP_CODE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_TYPE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.COUNTY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.COUNTRY_CODE, 10, ' ' ) || '.' ||
LPAD(:new.SQUARE_FEET, 6, '0' ) || '.' ||
LPAD(:new.NUMBER_MOTHER_LAW_UNITS, 6, '0' ) || '.' ||
TO_CHAR(:new.YEAR_BUILT, 'YYYYMMDD') || '.' ||
LPAD(:new.PROPERTY_VALUE, 12, '0' ) || '.' ||
RPAD(:new.ZIP_PLUS_4, 4, ' ' ) || '.' ||
RPAD(:new.SFI_REQ_FLAG, 1, ' ' ) || '.' ||
TO_CHAR(:new.LAST_MODIFIED, 'YYYYMMDD') || '.' ||
RPAD(:new.LAST_MODIFIED_BY, 31, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_STATUS, 10, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_DESC, 200, ' ' );
tcode := 'I';
elsif deleting then
rec1 :=
LPAD(:new.PROPERTY_ID, 20, '0' ) || '.' ||
RPAD(:new.TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.STREET_NUMBER, 25, ' ' ) || '.' ||
RPAD(:new.STREET_DIRECTION, 2, ' ' ) || '.' ||
RPAD(:new.STREET_NAME, 45, ' ' ) || '.' ||
RPAD(:new.UNIT_NUMBER, 15, ' ' ) || '.' ||
RPAD(:new.CITY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.STATE, 2, ' ' ) || '.' ||
RPAD(:new.ZIP_CODE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_TYPE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.COUNTY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.COUNTRY_CODE, 10, ' ' ) || '.' ||
LPAD(:new.SQUARE_FEET, 6, '0' ) || '.' ||
LPAD(:new.NUMBER_MOTHER_LAW_UNITS, 6, '0' ) || '.' ||
TO_CHAR(:new.YEAR_BUILT, 'YYYYMMDD') || '.' ||
LPAD(:new.PROPERTY_VALUE, 12, '0' ) || '.' ||
RPAD(:new.ZIP_PLUS_4, 4, ' ' ) || '.' ||
RPAD(:new.SFI_REQ_FLAG, 1, ' ' ) || '.' ||
TO_CHAR(:new.LAST_MODIFIED, 'YYYYMMDD') || '.' ||
RPAD(:new.LAST_MODIFIED_BY, 31, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_STATUS, 10, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_DESC, 200, ' ' );
tcode := 'D';
else
rec1 :=
LPAD(:old.PROPERTY_ID, 20, '0' ) || '.' ||
RPAD(:old.TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:old.TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:old.DWELLING_TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:old.DWELLING_TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:old.STREET_NUMBER, 25, ' ' ) || '.' ||
RPAD(:old.STREET_DIRECTION, 2, ' ' ) || '.' ||
RPAD(:old.STREET_NAME, 45, ' ' ) || '.' ||
RPAD(:old.UNIT_NUMBER, 15, ' ' ) || '.' ||
RPAD(:old.CITY_CODE, 10, ' ' ) || '.' ||
RPAD(:old.STATE, 2, ' ' ) || '.' ||
RPAD(:old.ZIP_CODE, 10, ' ' ) || '.' ||
RPAD(:old.UNIT_TYPE, 10, ' ' ) || '.' ||
RPAD(:old.UNIT_PREFIX, 10, ' ' ) || '.' ||
RPAD(:old.COUNTY_CODE, 10, ' ' ) || '.' ||
RPAD(:old.COUNTRY_CODE, 10, ' ' ) || '.' ||
LPAD(:old.SQUARE_FEET, 6, '0' ) || '.' ||
LPAD(:old.NUMBER_MOTHER_LAW_UNITS, 6, '0' ) || '.' ||
TO_CHAR(:new.YEAR_BUILT, 'YYYYMMDD') || '.' ||
LPAD(:old.PROPERTY_VALUE, 12, '0' ) || '.' ||
RPAD(:old.ZIP_PLUS_4, 4, ' ' ) || '.' ||
RPAD(:old.SFI_REQ_FLAG, 1, ' ' ) || '.' ||
TO_CHAR(:new.LAST_MODIFIED, 'YYYYMMDD') || '.' ||
RPAD(:old.LAST_MODIFIED_BY, 31, ' ' ) || '.' ||
RPAD(:old.STANDARDIZED_STATUS, 10, ' ' ) || '.' ||
RPAD(:old.STANDARDIZED_DESC, 200, ' ' );
rec2 :=
LPAD(:new.PROPERTY_ID, 20, '0' ) || '.' ||
RPAD(:new.TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_CODE, 10, ' ' ) || '.' ||
RPAD(:new.DWELLING_TYPE_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.STREET_NUMBER, 25, ' ' ) || '.' ||
RPAD(:new.STREET_DIRECTION, 2, ' ' ) || '.' ||
RPAD(:new.STREET_NAME, 45, ' ' ) || '.' ||
RPAD(:new.UNIT_NUMBER, 15, ' ' ) || '.' ||
RPAD(:new.CITY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.STATE, 2, ' ' ) || '.' ||
RPAD(:new.ZIP_CODE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_TYPE, 10, ' ' ) || '.' ||
RPAD(:new.UNIT_PREFIX, 10, ' ' ) || '.' ||
RPAD(:new.COUNTY_CODE, 10, ' ' ) || '.' ||
RPAD(:new.COUNTRY_CODE, 10, ' ' ) || '.' ||
LPAD(:new.SQUARE_FEET, 6, '0' ) || '.' ||
LPAD(:new.NUMBER_MOTHER_LAW_UNITS, 6, '0' ) || '.' ||
TO_CHAR(:new.YEAR_BUILT, 'YYYYMMDD') || '.' ||
LPAD(:new.PROPERTY_VALUE, 12, '0' ) || '.' ||
RPAD(:new.ZIP_PLUS_4, 4, ' ' ) || '.' ||
RPAD(:new.SFI_REQ_FLAG, 1, ' ' ) || '.' ||
TO_CHAR(:new.LAST_MODIFIED, 'YYYYMMDD') || '.' ||
RPAD(:new.LAST_MODIFIED_BY, 31, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_STATUS, 10, ' ' ) || '.' ||
RPAD(:new.STANDARDIZED_DESC, 200, ' ' );
tcode := 'U';
end if;
ls_sql :='
INSERT INTO AUDIT_LOG
( seq_no,
table_name,
user_stamp,
time_stamp,
tran_code,
record1,
record2)
VALUES
( :id,
:s_table_name,
:s_user_name,
:d_sysdate,
:s_tcode,
:s_rec1,
:s_rec2
EXECUTE IMMEDIATE ls_sql
USING ln_seq_id,
'PROPERTY',
user,
sysdate,
tcode,
rec1,
rec2;
end;
Your suggestion is highly appreciated ..
Edited by: Bipul on Sep 23, 2010 12:40 AM

TEMP_AUDIT_SEQ generates number with the increment of +1
Although there seems other sequence populating the AUDIT_LOG table through a different sequence with the increment of +10. So till now there are already 1179 different numbers residing in audit_log.seq_no and yet to be generated by the TEMP_AUDIT_SEQ sequence. I will look into more details.
SQL> select max(seq_no) from audit_log;
MAX(SEQ_NO)
1675689121
SQL> select TEMP_AUDIT_SEQ.nextval from dual;
   NEXTVAL
1675677285
SQL> select count(*) From audit_log where seq_no>1675677285;
COUNT(*)
      1179
SQL> select count(*) from audit_log where seq_no>1675677283 and mod(seq_no,2)=1;
COUNT(*)
      1179
SQL> select seq_no from audit_log where seq_no>1675677283 and mod(seq_no,2)=1 and rownum<12;
    SEQ_NO
1675677291
1675677301
1675677311
1675677321
1675677331
1675677341
1675677351
1675677361
1675677371
1675677381
1675677391
11 rows selected.
Thank you Lee and Herald ten Dam   ...

Long delay during first resize of visible JFrame (help!)

I need to increase the size of a component in a visible JFrame (and with it the size of the frame itself). The way I did this using jdk 1.3.1 causes a problem in 1.4.0 and 1.4.1.
When a component in a visible JFrame (such as a JPanel) is resized - using a setPreferredSize()-pack() sequence, there is a VERY long delay (~ 5 seconds) before the frame is fully redrawn. This only occurs the FIRST time the component is resized. Subsequent setPreferredSize()-pack() sequences take a reasonable amount of time.
Here's a simple example:
import java.awt.*;
import javax.swing.*;
public class PackDelayTest extends JFrame {
    JPanel pan;
    int width;
    static long tm;
    public static void main(String[] argv) {
            tm = System.currentTimeMillis();
        PackDelayTest2 test = new PackDelayTest();
            elapsed("in constructor");
        test.replace(); elapsed("repack 1");
        test.replace(); elapsed("repack 2");
        test.replace(); elapsed("repack 2");
        test.replace(); elapsed("repack 2");
        System.exit(0);
    public PackDelayTest() {
        pan = new JPanel();
        pan.setLayout(new BoxLayout(pan,BoxLayout.Y_AXIS));
        getContentPane().add(pan);
        JLabel label = new JLabel("Label 0");
        pan.add(label);
        pack();
        setVisible(true);
        width = pan.getPreferredSize().width;
    public void replace() {
       Dimension d = pan.getPreferredSize();
       pan.setPreferredSize(new Dimension(++width,d.height));
       pack();
    static void elapsed(String mess) {
        long ct = System.currentTimeMillis();
        System.out.println("Elapsed milliseconds, " + mess + ": " +
                           (ct - tm));
        tm = ct;
}Running this with Sun jdk 1.3.1 yields the timings:
Elapsed milliseconds, in constructor: 2226
Elapsed milliseconds, repack 1: 26
Elapsed milliseconds, repack 2: 24
Elapsed milliseconds, repack 2: 25
Elapsed milliseconds, repack 2: 24Running the same code with jdk 1.4.1_0 yields
Elapsed milliseconds, in constructor: 1773
Elapsed milliseconds, repack 1: [bold]5747[/bold]
Elapsed milliseconds, repack 2: 32
Elapsed milliseconds, repack 2: 7
Elapsed milliseconds, repack 2: 1Note the FIVE SECOND delay during the first setPreferredSize()- pack() sequence.
This problem also occurs with 1.4.0, Blackdown 1.4.1 and IBM 1.4.0, so presumably it is something in Sun's 1.4 code.
The only way I've found to avoid the initial delay is to set frame invisible
before the setPreferredSize(), pack() sequence and visible afterwards. But of course this makes the window 'flash' and is very unplesant for users.
I've looked at the source for pack() but it hasn't gotten me anywhere. If anyone has an idea about fixing this problem or working around it, I'd appreciate hearing about it.
FYI I ran these tests under Linux, vanilla installations of SuSE 8.0 and 8.1
Thanks,
bw

It turns out that this problem occurs under SuSE (8.0 and 8.1) but NOT under Redhat 8.0
I do NOT understand how this is possible, but it is the case. Has anyone encountered any SuSE specific problems?
fyi I've reproduced the problem on two rather different i386 machines (an AMD k7 and a Pentium III thinkpad), so it certainly doesn't have anything to do with hardware.
bw

Fpga: Re-Initialize Block Memory during Execution

Hello,
I am working on a project in labview fpga 2010, using the Spartan 3e board. At the present, I am using a large chunk of block memory in a VI and initialize it using an initialization VI that reads values from a spreadsheet and places them in the memory. It works for the first time, however I want to be able to re-initialize the memory during execution of the VI (i.e. I overwrite all the values in the table, then after a certain time I wish to reset them back to their initial values). Is there any way of accomplishing this on the FPGA without using double the memory and simply writing the changed values in a different location while leaving the originals unharmed? Thanks for your help

I think the approach I would take to solve this would be as follows:
Protect access to the block RAM with helper VIs that provide some level of locking (see http://zone.ni.com/devzone/cda/epd/p/id/6014 for some ideas)
Lock the block RAM when you're about to change it, and the go ahead and push the new values to the FPGA, pull the old values to remember them on the host, or both
Unlock when you've completed updating the RAM contents.
Note that, depending on how large this block RAM is, this approach could be painfully slow (since the Spartan 3E boards don't support DMA, you'll have to create your own mechanism for pushing the data to the device)

Error: Action "Install_WatsonX86_Cpu32_Action" threw an exception during execution

During install of SqlServer Express 2008 (also I tried Developer Edition 2008 R2 with same error) I have error:
2014-05-01 17:13:52 Slp: Running Action: Install_WatsonX86_Cpu32_Action
2014-05-01 17:13:52 Slp: Error: Action "Install_WatsonX86_Cpu32_Action" threw an exception during execution.
2014-05-01 17:13:52 Slp: Microsoft.SqlServer.Setup.Chainer.Workflow.ActionExecutionException: C:\WINDOWS\Installer\7affd.msi ---> System.IO.FileNotFoundException: C:\WINDOWS\Installer\7affd.msi
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetSummaryInformationStringProperty(ServiceContainer context, String pathToMsi, SummaryInformationStreamPropertySet propertyId)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetInstalledSummaryInformationStringProperty(ServiceContainer context, String productCode, SummaryInformationStreamPropertySet propertyId)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.SetupExtension.MsiInstallEngineActionBehavior.ModifyAction(String installedProductCode, String installedProductVersion, String pathOfPackageOnMedia, InstallAction pkgAction)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.SetupExtension.MSIInstallerEngine.InstallPackage(PackageId pkg, InstallAction pkgAction)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.MsiExtension.PackageInstallAction.Execute(String actionId, TextWriter errorStream)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.ActionInvocation.InvokeAction(WorkflowObject metabase, TextWriter statusStream)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)
2014-05-01 17:13:52 Slp:    --- Конец трассировки внутреннего стека исключений ---
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.ActionEngine.RunActionQueue()Error: Action "MsiTimingAction" threw an exception during execution.
2014-05-01 17:13:52 Slp: Microsoft.SqlServer.Setup.Chainer.Workflow.ActionExecutionException: C:\WINDOWS\Installer\7affd.msi ---> System.IO.FileNotFoundException: C:\WINDOWS\Installer\7affd.msi
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetSummaryInformationStringProperty(ServiceContainer context, String pathToMsi, SummaryInformationStreamPropertySet propertyId)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetInstalledSummaryInformationStringProperty(ServiceContainer context, String productCode, SummaryInformationStreamPropertySet propertyId)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.SetupExtension.MsiInstallEngineActionBehavior.ModifyAction(String installedProductCode, String installedProductVersion, String pathOfPackageOnMedia, InstallAction pkgAction)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.SetupExtension.MSIInstallerEngine.InstallPackage(PackageId pkg, InstallAction pkgAction)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Configuration.MsiExtension.PackageInstallAction.Execute(String actionId, TextWriter errorStream)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.ActionInvocation.InvokeAction(WorkflowObject metabase, TextWriter statusStream)
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)
2014-05-01 17:13:52 Slp:    --- Конец трассировки внутреннего стека исключений ---
2014-05-01 17:13:52 Slp:    в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)
2014-05-01 17:13:52 Slp: Received request to add the following file to Watson reporting: C:\Documents and Settings\me\Local Settings\Temp\tmp1C4.tmp
2014-05-01 17:13:52 Slp: The following is an exception stack listing the exceptions in outermost to innermost order
2014-05-01 17:13:52 Slp: Inner exceptions are being indented
2014-05-01 17:13:52 Slp:
2014-05-01 17:13:52 Slp: Exception type: System.IO.FileNotFoundException
2014-05-01 17:13:52 Slp:     Message:
2014-05-01 17:13:52 Slp:         C:\WINDOWS\Installer\7affd.msi
2014-05-01 17:13:52 Slp:     Stack:
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetSummaryInformationStringProperty(ServiceContainer context, String pathToMsi, SummaryInformationStreamPropertySet
propertyId)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetInstalledSummaryInformationStringProperty(ServiceContainer context, String productCode, SummaryInformationStreamPropertySet
propertyId)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Configuration.SetupExtension.MsiInstallEngineActionBehavior.ModifyAction(String installedProductCode, String installedProductVersion, String pathOfPackageOnMedia,
InstallAction pkgAction)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Configuration.SetupExtension.MSIInstallerEngine.InstallPackage(PackageId pkg, InstallAction pkgAction)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Configuration.MsiExtension.PackageInstallAction.Execute(String actionId, TextWriter errorStream)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Setup.Chainer.Workflow.ActionInvocation.InvokeAction(WorkflowObject metabase, TextWriter statusStream)
2014-05-01 17:13:52 Slp:         в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)
2014-05-01 17:13:56 Slp: Sco: Attempting to write hklm registry key SOFTWARE\Microsoft\Microsoft SQL Server to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_171325\Registry_SOFTWARE_Microsoft_Microsoft SQL Server.reg_
2014-05-01 17:13:56 Slp: Sco: Unable to write hklm registry key SOFTWARE\Microsoft\Microsoft SQL Server to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_171325\Registry_SOFTWARE_Microsoft_Microsoft SQL Server.reg_, Win32 error
2
2014-05-01 17:13:56 Slp: Sco: Attempting to write hklm registry key SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_171325\Registry_SOFTWARE_Microsoft_Windows_CurrentVersion_Uninstall.reg_
2014-05-01 17:13:56 Slp: Sco: Attempting to write hklm registry key SOFTWARE\Microsoft\MSSQLServer to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_171325\Registry_SOFTWARE_Microsoft_MSSQLServer.reg_
2014-05-01 17:13:56 Slp: Sco: Unable to write hklm registry key SOFTWARE\Microsoft\MSSQLServer to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_171325\Registry_SOFTWARE_Microsoft_MSSQLServer.reg_, Win32 error 2
I checked C:\WINDOWS\Installer\ for "7affd.msi" - there is no such file. Also I checked same folder on Win7-64 machine and Notebook WinXP-Pro - there is no such file. I was able to install Express on both Win7-64 and Notebook, but not on this machine.
I've tried searching for "7affd.msi" on internet without luck. Also I removed all Visual Studio Express 2010 and used any "Fix-It" utilities to check files and registry. And still have same error.
How to fix it?

Overall summary:
Final result:                  Failed: see details below
Exit code (Decimal):           -819060177
Exit facility code:            1838
Exit error code:               8751
Exit message:                  C:\WINDOWS\Installer\7affd.msi
Start time:                    2014-05-01 21:16:41
End time:                      2014-05-01 21:17:00
Requested action:              ComponentUpdate
Log with failure:              C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_211629\Detail_ComponentUpdate.txt
Exception help link:           http%3a%2f%2fgo.microsoft.com%2ffwlink%3fLinkId%3d20476%26ProdName%3dMicrosoft%2bSQL%2bServer%26EvtSrc%3dsetup.rll%26EvtID%3d50000%26ProdVer%3d10.0.1600.22%26EvtType%3d0xCF2E222F
Machine Properties:
Machine name:                  3R-XP
Machine processor count:       4
OS version:                    Windows XP
OS service pack:               Service Pack 3
OS region:                     Россия
OS language:                   русский (Россия)
OS architecture:               x86
Process architecture:          32 Bit
OS clustered:                  No
Package properties:
Description:                   SQL Server Database Services 2008
SQLProductFamilyCode:          {628F8F38-600E-493D-9946-F4178F20A8A9}
ProductName:                   SQL2008
Type:                          RTM
Version:                       10
SPLevel:                       0
Installation location:         j:\85c0db9df26d4ae0b40b522d393a\x86\setup\
Installation edition:          EXPRESS
User Input Settings:
ACTION:                        ComponentUpdate
CONFIGURATIONFILE:
HELP:                          False
INDICATEPROGRESS:              False
MEDIASOURCE:                   j:\85c0db9df26d4ae0b40b522d393a\
PID:                           *****
QUIET:                         False
QUIETSIMPLE:                   False
X86:                           False
Configuration file:            C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_211629\ConfigurationFile.ini
Detailed results:
Rules with failures:
Global rules:
There are no scenario-specific rules.
Rules report file:               C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20140501_211629\SystemConfigurationCheck_Report.htm
Exception summary:
The following is an exception stack listing the exceptions in outermost to innermost order
Inner exceptions are being indented
Exception type: System.IO.FileNotFoundException
    Message:
        C:\WINDOWS\Installer\7affd.msi
    Data:
      DisableWatson = true
    Stack:
        в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetSummaryInformationStringProperty(ServiceContainer context, String pathToMsi, SummaryInformationStreamPropertySet propertyId)
        в Microsoft.SqlServer.Chainer.Infrastructure.MsiNativeMethodHelpers.GetInstalledSummaryInformationStringProperty(ServiceContainer context, String productCode, SummaryInformationStreamPropertySet propertyId)
        в Microsoft.SqlServer.Configuration.SetupExtension.MsiInstallEngineActionBehavior.ModifyAction(String installedProductCode, String installedProductVersion, String pathOfPackageOnMedia, InstallAction pkgAction)
        в Microsoft.SqlServer.Configuration.SetupExtension.MSIInstallerEngine.InstallPackage(PackageId pkg, InstallAction pkgAction)
        в Microsoft.SqlServer.Configuration.MsiExtension.PackageInstallAction.Execute(String actionId, TextWriter errorStream)
        в Microsoft.SqlServer.Setup.Chainer.Workflow.ActionInvocation.InvokeAction(WorkflowObject metabase, TextWriter statusStream)
        в Microsoft.SqlServer.Setup.Chainer.Workflow.PendingActions.InvokeActions(WorkflowObject metaDb, TextWriter loggingStream)

Are there any disadvantages to writing data to front panel indicators when the vi's panel is not shown during execution?

Hi,
In the case where a sub vi's panel is not shown during execution, does it matter if I include front panel indicators on the sub vi's panel? (these indicators were there for debugging purposes). Is there any performance penalty for this? Thanks!

If the frontpanel is not loaded it has no time penalties. But a frontpanel is sometimes loaded because of property nodes!
greetings from the Netherlands

Trouble with Serial time delay

hi,i need help.
my problem is that there are no output and input parameter is changing very fast,but subvi has results only when the subvi runs in the process of highlight.
i think it might because of time delay,but i don't kown how to correct it.
thank you very much.
Attachments:
电源模块串口通信初版 - 副本.vi ‏28 KB
子vi.vi ‏26 KB

I cannot open your VIs. It appears that the language differences may be an issue. LabVIEW does not recognize them as valid LV files.
Generally when a VI runs correctly with Highlight Execution on and does not run correctly with it off, it is an indication that there are timing issues in the VI.
If you are reconfiguring the serial ports in the 54 module version, you may not be allowing enough time for port to get set up before attempting to communicate. Do you have 54 different serial ports? What kind of hardware are you using for the ports?
Lynn

Exeception during execution error

hi,
   My XML file is read from Application into XI.I'm receiveing this error"<b></b>EXCEPTION DURING EXECUTION".I know this is related to MApping.I've checked my mapping and its working fine.I'm doing this scenario in BPM so will there be any problem related to integration scenario.Could any one help me in fixing out this error.
This would help me a lot.
Thank u and Regards,
Prashanth

Hi Suraj,
         Thank u for helping me in fixing my transformation error.I corrected my mapping error to.There where errors in my file.Now i've got another Problem.This time it is BPE adapter error.I've sent the XML trace.Can u just help me in fixing out this.This will be very helpful to me.
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- 
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">
<SAP:Category>XIAdapter</SAP:Category>
<SAP:Code area="BPE_ADAPTER">UNKNOWN_MESSAGE</SAP:Code>
<SAP:P1 />
<SAP:P2 />
<SAP:P3 />
<SAP:P4 />
<SAP:AdditionalText />
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack>No object type found for this   message</SAP:Stack>
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
Thank u .
Prashanth
Message was edited by: Prashanth KR

Time Delay Indicator

This should be the simplest thing to do, but I'm getting stuck for some reason: I have a time delay running for a user-specified number of seconds, and I want an indicator on the front panel showing how much of this time has elapsed. I thought the "Elapsed Time" VI would be exactly what I was looking for, but I can't seem to get it to do what I want. I've attached my attempt; if you can point out where I'm going wrong, it would be much appreciated.
Solved!
Go to Solution.
Attachments:
Time Test.vi ‏34 KB

You don't have a while loop, so your code only runs once.
Your time delay is running in parallel with the elaspsed time. So it will delay the execution of the code.
Get rid of the time delay and put the elapsed time and its indicator in a loop.

Time Delay to wait for a solenoid to open

I have a Shutter that opens fine but I need to wait with some Time Delay before I continue to process some information.
I am using Labview 7.0 and have a DaqPad-6016.

It would be helpful to see your code to see exactly what you are doing.
However, LabVIEW does have several options for waiting. I have attached a screenshot showing some of these. The time delay is especially useful with DAQ because you can wire your task's error wire through the wait. This will cause the delay to explicitly happen in between the execution of VIs.
-Sal
Attachments:
wait.JPG ‏42 KB

Estimate time delay during execution

Similar Messages

Maybe you are looking for