Memory and performance crashing 8.2.1
Hi there,
On both macOS and window XP the memory and perfomance profiler crashes the complee LV Dev Environment instantly
once the start button is click. I update to LV8.2.1f4 same thing.
Also recently, after more than 5 years developing my application and in use during this period, 24 hours per day, with uptimes of 1- 2 months, now after a certain number of measurement interations it crashes ( window xp aplology meassage - ).
The WinXP event viewer states that my LV app crashed in a third party ActiveX module.
The ActiveX component has been used unchanged for more than 2 years so I doubt it is the problem, unless some window/lv update has caused it to hang.
I have carefully examined my code for nto closing refs and file pointers and notification quese that never get emptied/read
and i believe there are none, but of course i can never rule that out, but it is very minimal likely hood.
if i watch the memory use of the application in Windows Task manger i do see the memery increase very slowly, but that could also be just more data accumalating - althohg it is not stored in arrays but immediatly to file.
Any thoughts welcome.
michael proctor
Stanford University
Michael,
When LabVIEW crashes from running the performance and memory profiler, do you get the CPP error dialog the next time you start LabVIEW? If so, I would suggest submitting an error report with it. This will send us the error log file and help us determine what may have happened.
As for your application, you say this has not been changed and was running for five years, correct? Has anything else changed on the computer? Did you recently add new software to the system?
How long does it take before the program crashes? Is the time it takes reproduceable? How long have you been seeing this behavior? Did the crashes just suddenly start?
In certain cases, shared resource conflicts or corrupt files could cause problems like this. For XP, this can often be solved by doing a system restore to the time before the crashes started happening.
Regards,
Craig D
Applications Engineer
National Instruments
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Followings are sample for explain plan/autotrace/SQL*Trace.
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Explained.
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PLAN_TABLE_OUTPUT
Plan hash value: 3632291705
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
PLAN_TABLE_OUTPUT
| 0 | SELECT STATEMENT | | 1 | 11 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| A | 1 | 11 | 2 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | A_IDX | 1 | | 1 (0)| 00:00:01 |
PLAN_TABLE_OUTPUT
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2 - access("OBJECT_ID"=1)
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Plan hash value: 3632291705
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 11 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| A | 1 | 11 | 2 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | A_IDX | 1 | | 1 (0)| 00:00:01 |
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2 - access("OBJECT_ID"=1)
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481 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
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0 sorts (disk)
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*/home/oracle/admin/WASDB/udump*
SQL>host
JOSS:oracle:/home/oracle:!> cd /home/oracle/admin/WASDB/udump
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TKPROF: Release 10.2.0.3.0 - Production on Thu Oct 11 16:40:44 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
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select *
from
a where object_id = 1
call count cpu elapsed disk query current rows
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Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.00 0.00 0 1 0 0
total 3 0.00 0.00 0 1 0 0
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---------------------------------------- Waited ---------- ------------
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Memory and performance when copying a sorted table to a standard table
Hello,
As you all probably know, it's not possible to use a sorted table as a tables parameter of a function module, but sometimes you want to use a sorted table in your function module for performance reasons, and at the end of the function module, you just copy it to a standard table to return to the calling program.
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I've been looking for ways to do this without using an excessive amount of memory and still being performant. I tried four methods, all have their advantages and disadvantages, so I was hoping someone here could help me come up with the best way to do this. Both memory and performance are an issue.
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So far I have tried 3 methods.
I included a test report to this message, the output of this on my dev system is :
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I had some problems pasting the code here, so it can be found at [http://pastebin.com/f5e2848b5|http://pastebin.com/f5e2848b5]
Thanks in advance for the help.
Edited by: Dries Horions on Jun 19, 2009 1:23 PM
Edited by: Dries Horions on Jun 19, 2009 1:39 PM
Edited by: Dries Horions on Jun 19, 2009 1:40 PM
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Create a RFC function like this (replace SOLI_TAB with your table types):
FUNCTION Z_COPY_TABLE .
*"*"Lokale Schnittstelle:
*" IMPORTING
*" VALUE(IT_IN) TYPE SOLI_TAB
*" EXPORTING
*" VALUE(ET_OUT) TYPE SOLI_TAB
et_out[] = it_in[].
ENDFUNCTION.
and then try something like this in your program:
DATA: gd_copy_done TYPE c LENGTH 1.
DATA: gt_one TYPE soli_tab.
DATA: gt_two TYPE soli_tab.
PERFORM move_tables.
FORM move_tables.
CLEAR gd_copy_done.
CALL FUNCTION 'Z_COPY_TABLE'
STARTING NEW TASK 'ztest'
PERFORMING copy_done ON END OF TASK
EXPORTING
it_in = gt_one[].
CLEAR gt_one[].
WAIT UNTIL gd_copy_done IS NOT INITIAL.
ENDFORM.
FORM copy_done USING ld_task TYPE clike.
RECEIVE RESULTS FROM FUNCTION 'Z_COPY_TABLE'
IMPORTING
et_out = gt_two[].
gd_copy_done = 'X'.
ENDFORM.
Maybe this is a little bit faster than the Memory-Export?
Edited by: Carsten Grafflage on Jul 20, 2009 11:06 AM -
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Please give your valuable ways to reduce memory usage and performance improvement
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Best Regards,
KrishGood day,
As I tried, there are two ways of doing printPreview.
To handle this problem, add only one page at a time.
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Class PagePreview extends JPanel
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This addresses memory problem, but performance is better.
Is there any additional info from you?
Good Luck,
Kind Regards,
Krish -
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by alfred h:
1. using xsql servlet .9.9.1 command-line with a query that involves cursor expressions, grouping and a join, i run into the following error:
<ERROR>oracle.xml.sql.OracleXMLSQLException: ORA-00604: error occurred at recursive SQL level 1
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</ERROR>
using a quick program with OracleXMLQuery from XSU 1.2, i get the same error with the same query.
the database i'm testing is supposed to return 1 million+ rows; only 300 or so can be returned if i specify maxrows to be 300. anything beyond that gives me the cursor error.
SQL*Plus handles the query just fine.
2. if i take away the cursor expression in the query, and remove the maxrow spec, i get a java out of memory error.
3. i can't enhance the performance via using OracleConnection object and wanting to use cursor expressions with XSU at the same time. i get a "protocol error" instead.
So the questions are:
1. how can i resolve the cursor issue for the result set size i'm trying to retrieve?
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3. is it possible to tune the oracle jdbc in conjunction of the use of XSU?
<HR></BLOCKQUOTE>
null -
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I've tried rebooting with no change.
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My Mac info:
Mac OS X Version 10.6.8
Model Name: iMacModel Identifier: iMac12,1
Processor Name: Intel Core i7
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Number of Processors: 1
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L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 16 GB
Serial -ATA
any suggestions?Thats a shame, you should be enjoying your mac!, what was the final outcome of the Apple support guys?. I think if it were me and i had tried tried everything that you have including the support tech. i would be pressing for a replacement mac.
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IOS8 Slow Performance, Keyboard Bugs and App Crashes on iPhone 5
Since updating my iPhone 5 to iOS8, performance has slowed considerably: Apps take longer to launch and interface animation stutters.
When turning the phone on and off, the screen goes black - I have to keep pressing the on/off sleep/wake switch to get the screen to illuminate.
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Message was edited by: KWiPodios8 for my iphone 5 = crashes, hot phone, restarts, dropped calls, funny looking fuzzy 'senior picture screen' with frost on the perimeter..... Just opening 'message' for texts takes 3-4 seconds to load, where previously, it was milliseconds latency speeds. I think they pressed this OS beyond the reasonable functional limit of the hardware (phones), especially with the older phones and/or phones with less memory.
It's like an athlete on steroids, the bones can't handle the force of the muscles and something is gonna BREAK!
When did we ever come to think that $400 phones would become 2-4 year disposable items and revere at the glory of it all! And whether we realize it or not, it's being shoved down our throats.
Just fix the OS please so my phone can work for me as it has in the past.
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DB
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Memory management in jelly bean xperia tablet s and performance issues
Most used apps are always in memory.
while recent apps few remain in memory untill memory is full.
this is how memory management is supose to work.
pretty much same as windows 7
but if this true then why are games lagging ?
http://www.youtube.com/watch?v=S3TwBlW5ibk
When their not enough memory games i suspect lagging.
if their not enough memory recent apps getting killed to free up ram.
why does't this happen ?
And why are their apps in memory that i never use ?
tv sideview never use why its in memory ?
social life again never use again using memory
reader widget again using ram again never use at all
music unlimited again in memory never actualy use
Like i say'd most used apps are in memory all the time while rest is in cache.
But my most used apps are never in ram untill i start them
now if disabled lot apps my tablet become much faster respondsive.
Can sony plz plz plz plz fix memory management stop saying you did ?
You maybe reduced random shutdowns by like 90% or 95% perhaps even 99.99%
Before random shutdowns happend because of broken memory management, which obviously still broken as i see lag in games
sony apps use way to much ram, stop treating it like a computer with infinity amount of ramI rooted my tablet, and when looking at the processor speed in SetCPU, Sony uses a governor for power management that makes the tablet run jagged... I changed the power governor to ondemand, and got MUCH better smoothness and performance, while not sacrificing my battery life. You should try it out, maybe that'll help with games and such.
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PSE crashes when using the Detail Smart Brush plenty of memory and speed -please advise
PSE crashes when using the Detail Smart Brush plenty of memory and speed -please advise
I have a similar thing happening here, but on my aging iMac8,1 (3.06, 6 gigs of ram, plenty of internal and external scratch space) No wacom here, a Logitech mouse though, running via USB overdrive.
With me it's undos that are typically causing the hang, and as such, I notice it happening and don't keep clicking around. It hangs for anywhere from 30 seconds to 3 minutes or so and then I can continue working. Once, it was happening on a document I had open for a while, once it was occurring on a file I opened, made an errant click, and hit undo. This was a 46.6 MB CMYK tif. I also had it occur while drawing a simple selection with the polygonal lasso - each time it would hang on the third click. That time, it would unhang, but then the selection would be all messed up and not display what was being selected.
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Firefox announces it cannot provide a crash report on the crashI have similar problem only using XPPro/SP3. Once open even if just sitting unused it continues to gobble memory and crashes. It crashed a couple of times a day since the update, has locked the system up a couple of times and crashed a total of 14 times today, the last three while trying to send crash reports. All since the 3.6.17 update. It has become unusable (I'm posting this from Opera 11). From scanning the forum looks like Apple folks are having similar problems with the last update as well.
If I was of a paranoid turn of mind I'd think it was a way to get people to move to FF4. -
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