Improve the response time of logical database

hi all,
to improve the response time( time to access data ) in logical database how can we achive this

...but the same code is having a good response time in production environment bu tis slow in development....sure...your server might be doing a lot of time consuming things when run in development mode (e.g to enable debugging, extra monitoring or tracing etc.)..Do you have equal machines on both environments? Heavy tracing to logfiles in development environment is one possible bottleneck...or e.g. the amount of memory the db server is allowed to use ( table joins in the memory vs. using temporary files)

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How can I improve the response time of the user interface?

I'm after some tips on how to improve the response time to mouse clicks on a VI front panel.
I have data acquistion application which used to run fine, but after spending a couple of weeks making a whole bunch of changes to it I find that the user interface has become a bit sluggish.
My main GUI VI has a while loop running 16 times a second, updating some waveform charts and polling about a dozen buttons on the front panel.
There is sometimes a delay (variable, but up to 2 seconds sometimes) from when I click on a button to when it becomes depressed. I have wired the iteration terminal of the while loop to an indicator on the front panel and can see that the while loop is ticking over during the delayed response to the mouse click, so I know that the problem is not that the whole program is running slow, just the response to mouse clicks.
Also, just for debugging purposes, I have indicators of the iterations of all the main while loops in my program on the front panel, so I can see that there are no loops running abnormally fast either.
One thing I've tried is to turn off multi-threading, and this does seem to work - the response to mouse clicks is much faster. However, it has the side effect of making the main GUI while loop run less evenly. I was trying to get a fairly smooth waveform scrolling across the screen, and when multi-threading is off it gets a bit jerky.
Any other suggestion welcome..
(I am using LabVIEW 7.1, Windows 2000).
Regards,
Mark.

Hi Altenbach,
Thanks for your reply. In answer to your questions:
I am doing both DAQ board and serial data acquisition. I am using NIDAQ traditional for the DAQ board, and VISA for the serial. I have other similar versions of this program that do only DAQ board, or only serial, and these work fine. It was only when I combined them both into the same program that I ran into problems.
The multiple while loops are actually in separate VIs. I have one VI that acquires data from the DAQ card, another VI that acquires data from the serial port, another VI that processes the data and saves to file, and another VI, the GUI VI, that displays the data in graphs and charts. The data is transferred betwen the VIs via LV2 globals.
The GUI VI is a bit more complicated than I first mentioned. It has tab control, with 4 waveform charts on one page, 4 waveform graphs on another page, and 3 waveform graphs on another page. The charts have a history length of 2560, and 16 data points are added 16 times a second. The wavefom graphs are only updated once per minute.
I don't use the value property at all, but I do use lots of property nodes for changing the properties of the graphs and charts e.g. changing plot colours, Y scale range etc. There is only one local variable (for the Tab control). All the graphs and charts have data wired directly to their terminals.
I haven't done any profiling yet.
I am building arrays in uninitialised shift registers, but this is all well under control. As the experiement goes on, more data is collected and stored, and so the memory usage does gradually increase, but only to the extent that I would expect.
The CPU usage is 100%, but I thought this was always the case when using NIDAQ with DAQ cards. Or am I wrong about this? (As a side note, I am using NIDAQ traditional, but would NIDAQmx be better?)
Execution priority of the GUI vi (and all the other VIs for that matter) is set to normal.
The program is a bit large to post here, and I'm not sure if my company would be happy for me to publicise it anyway, so I suspect that this is turning into one of those questions that are going to be impossible to answer.
Just as a more general question, why would turning off multi-threading improve the user interface response?
Thanks,
Mark.

Anyway to speed up the response time of E62/E61?

I bought the E62 and found it is considerably slower than most smart phones specially when compared with Blackberry andsets. It really takes a while to open the mails or applications/folders.
Is there any way we can improve the response time for E62?

You aren't by any chance calling a function in your repeating frame that in turn goes back and queries the database, are you? If so ... don't. We regularly do 500+ page PDF-file reports, and one thing we discovered early on was that repeatedly going back to the database while generating the report output (in our case, in calculations that were being done on each line of a report) slowed the output down by an order of magnitude. Instead, we now retrieve all the data needed for each report up front (via functions or views called in the initial SQL for the report), and just use Reports to format the output. MUUUUUUUCH faster -- 200 page reports that used to take 15 minutes to complete now complete in just seconds.
One way you can visually see if this is part of your problem is to watch the report execute in the Report Queue Manager application. If it spends all its time on the "Opening" stage then breezes through each page, this is not your problem. If instead it seems to take a long time generating each page, I'd suspect that this may be at least part of your delay.
- Bill

How to improve the response speed

Dear Consultants,
In BI 7.0 EP Environment, displaying 40000 detailed records wasted 3 minutes, this speed is slowly.
How to improve the response speed ?
Please give me some proposals and methods to solve this question.
Thanks a lot & Best Regards
Ricky

Hello,
3min. is not so bad for 40000 rows of data. Firstly you can analyze where the time spent is it olap or DB. you can use RSRT for analysis.
Then,
1. Create aggregates
2. Use caching and precalculation
3. check 'Use Selection of Structure Elements' from properties of query in RSRT
4. Remove unnecessary calculations from query
5. remove unnecessary rows. try to make them free characteristics.
6. If there is unused data in infocube, you can archive this data.
regards,

Urgent:How to Speed Up the Response time for PDF Report of 500 pages

hi all
i am running the 9ias on Solaris and Generating some reports
Which fetches around 50,000 records and Display them in pdf format.
When i am ruuning the Query at Database level Response time is Very fast.
But when i Run the Report in Web Browser same report takes 7-8 minutes.
So it seems that the Conversion to pdf and Displaying it takes most of time.
Does any one has idea What parameter's needs to be changed/Caching ??? /
or any other ways or methods which can be used to Reduce the Response time.
(its once a monthly Report and User need to Download all the 500 pages as
a Single Document).
Any help / suggestion please
thanks
jai

You aren't by any chance calling a function in your repeating frame that in turn goes back and queries the database, are you? If so ... don't. We regularly do 500+ page PDF-file reports, and one thing we discovered early on was that repeatedly going back to the database while generating the report output (in our case, in calculations that were being done on each line of a report) slowed the output down by an order of magnitude. Instead, we now retrieve all the data needed for each report up front (via functions or views called in the initial SQL for the report), and just use Reports to format the output. MUUUUUUUCH faster -- 200 page reports that used to take 15 minutes to complete now complete in just seconds.
One way you can visually see if this is part of your problem is to watch the report execute in the Report Queue Manager application. If it spends all its time on the "Opening" stage then breezes through each page, this is not your problem. If instead it seems to take a long time generating each page, I'd suspect that this may be at least part of your delay.
- Bill

How to improve server response time...

we have two solaris5.8 machines with 4G of Ram in each of the them. So they are pretty big. We have round-robine load balancing... We are using loadRunner to monitor the performance of our applicaion.So far our applicaion has not even pasted 50 users load test. If we are performing the load test the site is not usable because it gets extremely slow. So we thought by
increasing the request thread (in both kxs & kjs)and connection pool size, we might increase the performance but it did just the oppsite. AS the number of user increases the response time inscreases as well...Our application framework is based on MVC. What is the best setting for application server for the large number of users....Currently in production our old application supports 200 users at a time(using loadRunner)
we are using oracle 8i database....
any help will be appreciated!!
Thanks

Hi,
we are having problems with server response on Solaris although this is with
an Informix database and we do not have load balancing set up. Our server
has 3GB of RAM. However the same app ran fine on an NT iPlanet installation
where the server only had 512MB RAM.
This has occasioned a lot of hard work trying to pin down the problem. We
are currently investigating the JDKs. JDK 1.3 almost completely eliminates
the problem we had. Using the java profiler we noticed that in JDK 1.2.2
most of the CPU time seemed to be spent in the socket read and socket accept
methods. I've attached the profile output for JDK1.3 and 1.2.2, there is
certainly a marked difference.
I would be really interested to see if you get similar results. I simply
added -Xrunhprof:cpu=samples to the JAVA_ARGS in iasenv.ksh.
Andy
"Mansoor Quraishi" <[email protected]> wrote in message
news:[email protected]..
we have two solaris5.8 machines with 4G of Ram in each of the them. So
they are pretty big. We have round-robine load balancing... We are
using loadRunner to monitor the performance of our applicaion.So far
our applicaion has not even pasted 50 users load test. If we are
performing the load test the site is not usable because it gets
extremely slow. So we thought by
increasing the request thread (in both kxs & kjs)and connection pool
size, we might increase the performance but it did just the oppsite.
AS the number of user increases the response time inscreases as
well...Our application framework is based on MVC. What is the best
setting for application server for the large number of
users....Currently in production our old application supports 200
users at a time(using loadRunner)
we are using oracle 8i database....
any help will be appreciated!!
Thanks
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Recording Audio and Midi at the same time in Logic 7 Express Can it be done

I am wondering if I can record audio and midi at the same time in Logic 7 Express. I am running my guitar thrugh a Roland GR 33, and a line out and using the GR 33 to trigger sounds in the Logic's synth section but cant seem to record all three tracks at once. If any one knows how let me know. Oh and I am running the GR Synth and Guitar into the Prosonus Fire Fox and have the GR 33 out midi to the Fire Box as well. So I guss the question is how do I sent up two audo tracks and one midi track to record in real time. Thanks Victor

I am wondering if I can record audio and midi at the
same time in Logic 7 Express. I am running my guitar
thrugh a Roland GR 33, and a line out and using the
GR 33 to trigger sounds in the Logic's synth section
but cant seem to record all three tracks at once. If
any one knows how let me know. Oh and I am running
the GR Synth and Guitar into the Prosonus Fire Fox
and have the GR 33 out midi to the Fire Box as well.
So I guss the question is how do I sent up two audo
tracks and one midi track to record in real time.
Thanks Victor
Try arming the audio tracks, select one of the tracks, then while holding down the shift key, select the midi track you want to record, arming the "r" on the midi track. Press "record".....
HL

Is there a way to speed up the response time from the dock

Is there a way to speed up the response time for external hard drives from the dock? I have three external HDs but when I click on the alias in the dock there is always hesitation before it opens. I'm leaning towards the fact that it is just a result of the fact that the speed of the Mac is what it is. But, maybe there is something I can do to speed it up. The drives are plugged via usb directly to the Mac and they have there own power source. The curious thing is that they once were plugged into a large separately powered USB hub and I don't recall a lag like I have now. Any thoughts? Thanks...
Message was edited by: gfann18

Have you got the drives set up to spin down when not in use?
Have a look at the Energy Saver settings in System Preference on the Mac.
Make sure the "Put the Hard Discs to sleep when possible" box is not ticked.

How to get the selection parameters from logical database into one of the t

Hi Sap ABAP Champians,
How to get the selection parameters from logical database into one of the tab in the tabstrip selection-screen.
Please help me for this
Thanks
Basu

Hi
Thanks, that will work, but then I'll have to insert code into all my reports.
I can see that "Application Server Control Console" is able to rerun a report.
This must mean that the Report Server has access to the runtime parameters.
But how?
Cheers
Nils Peter

How to suppress the Selection Screen of Logical Database

Hi,
I am using one Logical Database for my report.
I want to show my customized selection Screen.
How can I hide the Selection Screen of Logical Database?

Hi,
Check the attributes of the report program where you assign the LDB. You can see the parameter Selection Screen press the F4 and check the LBD is provided any Blank screen or not.
For some LDB's you can find the Report Category in the attribute section of the report. either you can create the new screen or standard screen might be provided with Blank.
Check there ..
If you don't find you can use LOOP AT SCREEN..ENDLOOP to hide the fields of LDB.
Which LDB you are using.

How to find the Response time for a particular Transaction

Hello Experts,
Am implementing a BAdI to achieve some customer enhancement for XD01 Transaction . I need to confirm to customer that after the implementation and before implementation what is the response time of the system
Response time BEFORE BAdI Implementation
Response time AFTER BAdI Implementation
Where can i get this.
Help me in this regard
Best Regards
SRiNi

Hello,
Within STAD, enter the time range that the user was executing the transaction within as well as the user name. The time field indicates the time when the transaction would have ended. STAD adds some extra time on using your time interval. Depending on how long the transaction ran, you can set the length you want it to display. This means that if it is set to 10, STAD will display statistical records from transactions that ended within that 10 minute period.
The selection screen also gives you a few options for display mode.
- Show all statistic records, sorted by star
This shows you all of the transaction steps, but they are not grouped in any way.
-Show all records, grouped by business transaction
This shows the transaction steps grouped by transaction ID (shown in the record as Trans. ID). The times are not cumulative. They are the times for each individual step.
-Show Business Transaction Tots
This shows the transaction steps grouped by transaction ID. However, instead of just listing them you can drill from the top level down. The top level will show you the overall response time, and as you drill down, you can get to the overall response time.
Note that you also need to add the user into the selection criteria. Everything else you can leave alone in this case.
Once you have the records displayed, you can double click them to get a detailed record. This will show you the following:
- Breakdown of response time (wait for work process, processing time, load time, generating time, roll time, DB time, enqueue time). This makes STAD a great place to start for performance analysis as you will then know whether you will need to look at SQL, processing, or any other component of response time first.
- Stats on the data selected within the execution
- Memory utilization of the transaction
- RFCs executed (including the calling time and remote execution time - very useful with performance analysis of interfaces)
- Much more.
As this chain of comments has previously indicated, you are best off using STAD if you want an accurate indication of response time. The ST12 (combines SE30 ABAP trace and ST05 SQL trace) trace times are less accurate that the values you get from ST12. I am not discounting the value of ST12 by any means. This is a very powerful tool to help you tune your transactions.
I hope this information is helpful!
Kind regards,
Geoff Irwin
Senior Support Consultant
SAP Active Global Support

Why is the response time when using clickwheel...

I've bought a new 60gb video and, in comparison to my 20gb 3rd generation, the response time when using the clickwheel (next track/pause/play/bak track) is annoyingly long on start-up. And the display takes seconds to catch up with what's playing sometimes freezing with half of the one 'page' showing and half of another. Should I expect this because of the larger capacity/more complex iPod?
Also, in an earlier post I noted that when the iPod first fires up, tracks seem to stop and start - just for a second or so, 3 or 4 times within the first 15 seconds. It's not the track on iTunes as it never happens on my 3g.
Dell Windows XP

Definately sounds like a faulty harddrive.
You could always try restoring it with the most recent updater, and reloading everything - kind of like a fragmented harddrive, I am noticing better performance since I last wiped it clean and relaoded it (due to another error - actually)....

Is is possible to open event lists from different tracks at the same time in Logic Pro 9?

Is it possible to open event lists from two difference tracks in an arrangement at the same time in Logic Pro 9?
When I switch between tracks the event list swiches as well. Thanks in advance.

If you deselect the litte chain link icon in the event list window, it will no longer follow your region selection and you can openas many as you need. Also you can select multiple regions and see the inthe SAME window if you select to show multiple regions, and you can have the notes shown in their respective track colors.

Minimizing the response time of the 10g Application

Hi,
We are developing an application using 10g iDs & Planning to deploy the app using 10g AS in on the internet.
While trying to test the deployment the forms are not responding as desired.
Please let me know if there are ways to minimize the response time so that the App run faster.
can we compress the traffic any way.
best regards
Arkesh

thanks for ur reply
Jinit version=1.3.1.22 is in place
I have checked the form making that as thinnest as possibe.
response time is still high.
I would like add few more information
1. The AS is having a Real IP.
2. Users are connected to that AS via Internet being located at a different site.
Users are annoyed with the responses they are getting from the application.
waiting for replies....
Arkesh

ACE 4710: Find out the response time of a real server

Hi to everyone,
I have a couple of ACE 4710 and I need to find out what is the response time of a real server.
Is there a way for this?
Thank you for any answer!
giorgio romano

Hi,
Kindly add the following line in your serverfarm configuration:
predictor response syn-to-synack
Suppose your serverfarm looks like this:
serverfarm host AAA_FARM
predictor response syn-to-synack
probe HTTP_PROBE
probe TCP9001_PROBE
rserver SC106
inservice
rserver SC107
inservice
rserver SC108
inservice
rserver SC109
inservice
rserver SC110
inservice
rserver SC111
inservice
rserver SC112
inservice
rserver SC113
inservice
rserver SC114
inservice
rserver SC120
inservice
rserver SC131
inservice
And then use the following command to see the average response time from your rserver as follows:
ACE1/prod# show serverfarm AAA_FARM detail
serverfarm     : AAA_FARM, type: HOST
total rservers : 11
active rservers: 11
description    : ServerFarm AAA
state          : ACTIVE
predictor      : RESPONSE
method            : syn-to-synack
samples           : 8
failaction     : -
back-inservice    : 0
partial-threshold : 0
num times failover       : 0
num times back inservice : 0
total conn-dropcount : 0
Probe(s) :
HTTP_PROBE, type = HTTP
TCP9001_PROBE, type = TCP
----------connections-----------
real                  weight state        current    total      failures
---+---------------------+------+------------+----------+----------+---------
rserver: SC106
x.x.x.x.:0        8      OPERATIONAL 2          1125       0
max-conns            : 4000000   , out-of-rotation count : 0
min-conns            : 4000000
conn-rate-limit      : -         , out-of-rotation count : -
bandwidth-rate-limit : -         , out-of-rotation count : -
retcode out-of-rotation count : -
load value           : 0
average response time (usecs) : 81   ----> thats what you might be looking for
From other day :
rserver: SC114
x.x.x.x:0        8      OPERATIONAL 70         10903      2
max-conns            : 4000000   , out-of-rotation count : 0
min-conns            : 4000000
conn-rate-limit      : -         , out-of-rotation count : -
bandwidth-rate-limit : -         , out-of-rotation count : -
retcode out-of-rotation count : -
load value           : 0
         average response time (usecs) : 1334                       ----> thats what you might be looking for
For Serverfarm BBB_FARM
serverfarm     : BBB_FARM, type: HOST
total rservers : 1
active rservers: 1
description    : ServerFarm BBB
state          : ACTIVE
predictor      : RESPONSE
method            : syn-to-synack
samples           : 8
failaction     : -
back-inservice    : 0
partial-threshold : 0
num times failover       : 1
num times back inservice : 1
total conn-dropcount : 0
Probe(s) :
----------connections-----------
real                  weight state        current    total      failures
---+---------------------+------+------------+----------+----------+---------
rserver: SC208
x.x.x.x:0        8      OPERATIONAL 0          0          0
max-conns            : 4000000   , out-of-rotation count : 0
min-conns            : 4000000
conn-rate-limit      : -         , out-of-rotation count : -
bandwidth-rate-limit : -         , out-of-rotation count : -
retcode out-of-rotation count : -
load value           : 0
         average response time (usecs) : 0   ----> thats what you might be looking for
Use more detials for response predictor:
http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_1_0/configuration/slb/guide/rsfarms.html#wp1068831
Configuring the Application Response Predictor
To instruct the ACE to select the server with the lowest average response time for the specified response-time measurement based on the current connection count and server weight (if configured), use the predictor response command in server farm host or redirect configuration mode. This predictor is considered adaptive because the ACE continuously provides feedback to the load-balancing algorithm based on the behavior of the real server.
To select the appropriate server, the ACE measures the absolute response time for each server in the server farm and averages the result over a specified number of samples (if configured). With the default weight connection option configured, the ACE also takes into account the server's average response time and current connection count. This calculation results in a connection distribution that is proportional to the average response time of the server.
The syntax of this command is as follows:
predictor response {app-req-to-resp | syn-to-close | syn-to-synack}[samples number]
The keywords and arguments are as follows:
•app-request-to-resp—Measures the response time from when the ACE sends an HTTP request to a server to the time that the ACE receives a response from the server for that request.
•syn-to-close—Measures the response time from when the ACE sends a TCP SYN to a server to the time that the ACE receives a CLOSE from the server.
•syn-to-synack—Measures the response time from when the ACE sends a TCP SYN to a server to the time that the ACE receives the SYN-ACK from the server.
•samples number—(Optional) Specifies the number of samples over which you want to average the results of the response time measurement. Enter an integer from 1 to 16 in powers of 2. Valid values are 1, 2, 4, 8, and 16. The default is 8.
For example, to configure the response predictor to load balance a request based on the response time from when the ACE sends an HTTP request to a server to when the ACE receives a response back from the server and average the results over four samples, enter:
host1/Admin(config)# serverfarm SFARM1
host1/Admin(config-sfarm-host)# predictor response app-req-to-resp
samples 4
To reset the predictor method to the default of round-robin, enter:
host1/Admin(config-sfarm-host)# no predictor
To configure an additional parameter to take into account the current connection count of the servers in a server farm, use the weight connection command in server farm host predictor configuration mode. By default, this command is enabled. The syntax of this command is as follows:
weight connection
For example, enter:
host1/Admin(config)# serverfarm SF1
host1/Admin(config-sfarm-host)# predictor response app-request-to-resp
samples 4
host1/Admin(config-sfarm-host-predictor)# weight connection
To remove the current connection count from the calculation of the average server response time, enter:
host1/Admin(config-sfarm-host-predictor)# no weight connection
You can use threshold milliseconds parameter which is optional Specifies the required minimum average response time for a server. If the server response time is greater than the specified threshold value, the ACE removes the server from the load-balancing decision process (takes the server out of service).
Enter an integer from 1 to 300000 milliseconds (5 minutes). The default is no threshold (servers are not taken out of service).
In case if you have measures the response time from when the ACE sends a TCP SYN to a server to the time that the ACE receives a CLOSE from the server use syn-to-close      (already discussed previously)
If you have to measures the response time from when the ACE sends a TCP SYN to a server to the time that the ACE receives the SYN-ACK from the server use syn-to-synack   (already discussed previously)
SAMPLES parameter is optional and specifies the number of samples that you want to average from the results of the response time measurement and response time is used to select the server with the lowest response time for the requested response-time measurement. If you do not specify a response-time measurement method, the ACE uses the HTTP app-req-to-response method.
Whenever a server's load reaches zero, by default, the ACE uses the autoadjust feature to assign a maximum load value of 16000 to that server to prevent it from being flooded with new incoming connections. The ACE periodically adjusts this load value based on feedback from the server's SNMP probe and other configured options.
Using the least-loaded predictor with the configured server weight and the current connection count option enabled, the ACE calculates the final load of a real server as follows:
final load = weighted load Ã— static weight Ã— current connection count
where:
â€¢weighted load is the load reported by the SNMP probe
â€¢static weight is the configured weight of the real server
â€¢current connection count is the total number of active connections to the real server
The ACE recalculates the final load whenever the connection count changes, provided that the (config-sfarm-host-predictor) weight connection command is configured. If the (config-sfarm-host-predictor) weight connection command is not configured, the ACE updates the final load when the next load update arrives from the SNMP probe.
If two servers have the same lowest load (either zero or nonzero), the ACE load balances the connections between the two servers in a round-robin manner.
HTH
Plz rate if u find it useful.
Sachin

Improve the response time of logical database

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