Program speeds up System time?

Hi, im writing an animation program in swing that loads and displays images in a seperate thread. there is a variable sleep time in between display times (because of a timestamp on the image).
the wierd thing is that when I output the timestamp to a string after sleeping for the appropriate time per frame, the time seems to be going faster. I thought this was just an internal bug, but when I go to http://www.time.gov/ the applet there shows the time being sped up while my program is running.
Is there a known issue with threads and sleeping that affects the system time? thanks

Huh?
"speeds up system time"? "time seems to be going faster"? Man, if you can make time go faster, let me know, because this Monday has already lasted several weeks.
Seriously, what are you saying? You tell it to sleep for 100 ms but it sleeps less? Or more?
If it's that the time is later than you expect when it wakes up, then that's no surprise, since sleep only guarantees that it will sleep at least that long (unles interrupted). It could sleep longer, depending on the vagaries of your OS's and VM's schedulers.
Or are you saying that after 10 seconds of real wall clock time have passed, your system clock has advanced 12 seconds?

Similar Messages

Program to Set System Time in Java

Is there any way to set the system time through Java. If there is can you help me some information.
Regards,
Shivakumar Thota

Hey Hey,
You could run Runtime.exec() to execute a command such as VBScipt to do it.
Other than that you may have to take a look at Java Native Interface(JNI) that will basically take control of doing anything you need.
Also, You may want to post this in "New To Java" or some other forum other than Java Web Start. You'll get more people to help ya.
Hope this helped,
--Ryan

How to change system time through java program

Hi
I want to know, how to change system time through java program.
give me a idia with example.
Thanks

There isn't any core Java API for this. Use JNI or call an external process with Runtime.exec().
~

How to set the system time in the program

Hi All,
How do we update the system time inside java programme.

AFAIK there is no easy (pure java) way: either you exec something (depending on your paltform) or use native code. Appropriate privileges will be necessary.

Time dead after changing system time

Hi,
I have read many posts on this but still can't find a perfect solution.
1. tried using thread.sleep(1000) to cause a method to run every 1 sec.. but after reading online.. it seems to be a lousy design as it depends on the system cpu speed. sometimes it will stop for more than 1 sec.
2. tried :
private ScheduledExecutorService scheduler
private ScheduledFuture task
public classname(){
scheduler = Executors.newSingleThreadScheduledExecutor();
task = scheduler.scheduleAtFixedRate(methodToRun,1,1,TimeUnit.SECONDS)
This works but if i changed the system time for multiple times, it will just stop my program...
Did i use ScheduledExecutorService or thread right ?

after reading online.. it seems to be a lousy design as it depends on the system cpu speed.God help us! Where on earth did you read that? It depends on the system clock, and it isn't guaranteed to retun in exactly the time specified.
sometimes it will stop for more than 1 sec.That's what its specification says.
This works but if i changed the system time for multiple times, it will just stop my program...No, it won't 'stop' your program, it will foul up the executor until it adjusts to the new time.
There is nothing in standard Java that guarantees exact timing. If you need that you need a real-time version of Java. But probably you don't need that at all. Impossible to say without some context.

A Extremely Fast Read Speed File System

Other day i was playing a game and get annoyed with the long loading times between levels, then i raise a question to myself...
There is no File System optimized for Read Speed?
I did not want one "bloated" with journaling, snapshots and all those nice all use optimizations.
I just want a plain Bare, Very simple, File System that is indisputably fast at Read Speed!
It can also be processor demanding, it is not a problem for this use case...
Someone know a File System Like that?
What is the viability(and complexity) to make one?
Sorry by the bad english!

This is just a guess here but how much data do you need to load?
If it is a lot of MB not even the best filesystem in the world can speed that up, to make things worse I'm guessing that you aren't loading the data from contiguous files on the HD.
To add another variable to the way hard disks perform there is the possibility of having some data compressed and this will make it depend on how fast is your cpu.
As far as I know some compression formats although very efficient can have a very big speed penalty, also the speed and configuration of you memory subsystem can impact performance as well. Also if the data is compressed in a way that you can't use multiple cores to decompress it then it doesn't matter if you have a system with a single core cpu of one with 100 cpus.
Sometimes having as much ram as you can will be the best option, sometimes having the fastest ram possible is best.
To make things worse, newer systems seem to add another degree of complexity to this as for some loads one type of memory association is better and for other loads other type of association is better (I'm thinking of ganged / unganged configuration in the bios).
In my experience, when using ext3, if you add noatime and nodiratime to the mount option you will get a bit better performance, of course different filesystems will have different performance when reading but as far as I know no filesystem is the best of all for everything, so consider your overall experience.
Is it worth having a system that can have a speed penalty when used in everyday tasks just for the sake of having one game load the levels faster? Also how long will you be playing that particular game? Is it worth all the trouble just for one game you will stop playing in a couple of months?
On the use of SSD hard drives .... I've been more tempted to get one before but .... although read speed and access times are first class it seems there is more to this kind of drives than what meets the eye, some drives seem to behave terribly when writing under certain conditions (typically when there are multiple write requests), again the overall speed of the system, not just when using one program.
After considering all the benefits and downsides if you still really want faster load times for that game then the best way to find out the faster filesystem is to try them all and time the load times.
Happy benchmarking .

How do I speed up system as I upgraded to Maverick and everything is running extremely slow-especially "pages"

How do I speed up system after upgrading to Maverick on my iMac?

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Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait about a minute. Then paste some other text, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
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How to change system time from Java

Could someone tell me if there is possibility to change the system time, from within a Java program. And how to do it.

In general, no.
You could do it using JNI if you're running your JVM
with sufficient system privileges.
It seems a highly questionable thing to want to do.
Why do you have a requirement for this?
Sylvia.Now there's an idea (thread now has a 'watch'), I think I'll drop the the idea of being a hacker and learn how to write viruses instead - happy days ahead ...

How to set system time from Terminal while booted from 10.6.3 server install disk?

I'm installing from a 10.6.3 server install disc onto a Mac Mini. However, the battery on this Mac Mini is pretty much dead, forcing the system time back to 1/1/2001. Through some research, this has created a problem in that I cannot move beyond the Welcome screen during setup of OS X server. It looks like the binary has issues with the system time being older.
But I'm stuck in that I don't know how to adjust the system time from the Terminal Utility on the boot CD. Can anyone help?

Hey, i just run in to something similar, tonight while trying to fix a computer.
The user set the time and date on his computer to 1998 and computer locked everything including time and date in system preferences, and his user account basicly making him from administrator to guest. he could not almost any program properly that required administrator privilages.
to fix this we used this comand in terminal " sudo date 201703162014 " todays time and date
20:17 03/16 2014
we tryed everything and this fixed in 2 seconds
ps: when you type sudo in terminal it whil give you a warning the improper use of this command is bad.... click continue.otherwhise you will not be able to execute the command.
thanks again for this post and have a great day

Merging a developer program into a system.

Hello Community
    Using Sharepoint 2010 Server with the UI you have web applications.
    Eventually you may want to add more applications but this time
you may want to create a web application developed by writing a program.
    Is it possible to add a web application developed and written by a program
to the Sharepoint system that was created using the UI web application and
if so how would you execute a web application written developed by writing
a program from the system created using the UI?
    Thank you
    Shabeaut

Hi Shabeaut,
I think you are refering custom application targetted for SharePoint, correct me if I am wrong.
There are different approaches for developing SharePoint application, usually if high degree of customization is required, we use Visual studio for creating site definiations, web parts, master pages, workflows, REST API, CSOM, JSOM, SSOM etc.,
If there are simple changes, then our choice of tool is SharePoint designer, which is used for master page customization, workflow development, list / content type customization etc.,
few cosmatics changes are done using SharePoint OOTB.
So it depends on level of customization you are looking for, here are few links which will help you to get started -
ALM SharePoint -
http://msdn.microsoft.com/en-us/library/office/dn567995(v=office.15).aspx
http://msdn.microsoft.com/en-us/library/office/gg604045(v=office.14).aspx
http://blogs.msdn.com/b/kaevans/archive/2013/08/15/alm-for-sharepoint-apps-implementing-continuous-integration.aspx
Developing SharePoint apps,
http://msdn.microsoft.com/en-us/library/ff648591.aspx
http://office.microsoft.com/en-us/sharepoint-designer-help/introduction-to-building-sharepoint-applications-HA010239046.aspx
http://blogs.msdn.com/b/uksharepoint/archive/2013/03/25/sharepoint-2013-development-apps-versus-solutions.aspx
http://msdn.microsoft.com/en-us/library/office/jj163230(v=office.15).aspx
Hope this helps!
Ram - SharePoint Architect
Blog - SharePointDeveloper.in
Please vote or mark your question answered, if my reply helps you

Program SAPLSBAL_DB taking long time for BALHDR table entries

Hi Guys,
I am running a Z program in Quality and Production system both which is uploading data from Desktop.
In Quality system the Z program is successfully uploading datas but in production system its taking very long time even sometime getting time out.
As per trace analysis, Program SAPLSBAL_DB taking long time for BALHDR table entries.
Can anybody provide me any suggestion.
Regards,
Shyamal.

These are QA screen shots where no issue, but we are getting very long time in CRP.
Regards,
Shyamal

How can eCATT used for testing of z program on DEV system &data on Quality?

Hello All,
Background - Custom object is (for e.g. any report program) which I want to test is present on DEV system and required data (e.g. data that will be passed to selection screen fields of program) on Quality system.
Question -How to do testing of program using eCATT without transporting my program to Quality box? Please anyone can give me any insights on this to fix the data availability issue.
My efforts - Created System data container specifying RFC connection for Quality system. Created Test Data Container with data available on Quality box. Here, I specified target system as 'Quality' for the data. Created Test script (for SE38 tcode ) and did the parameterization(giving program name as parameter , other selection screen fields) and set the Target system for each parameter to QUALITY. Created Test Configuration specifying with all required parameters .
When I ran the test script from Test Configuration, test script started to run on Quality system. But failed saying program/object does not exist on quality box.
Importance - This is required as no data available on DEV box, need to move program/object to Quality system. Hence, multiple transort requests are created.
Edited by: Tripti on Feb 26, 2012 9:29 AM

Thank you for your quick response, BalusC. I really appreciate your answer.
Yes, you are right. If I manually code the same amount of those components in the JSF pages instead of generating them dynamically, the server will still run out of memory. That is to say, JSF pages might not accommodate a great deal of concurrent visiting. If I upgrade the server to just allow 1,000 teachers making their own test papers at the same time, but when over 2,000 students take the same questionnaire simultaneously, the server will need another upgrading. So I have to do what you have told me, using JS+DOM instead of upgrading the server endlessly.
Best Regards, Ailsa

I need to get the system time in Micro second

Hi,
In the java API there is a static method �curentTimeMillis�, but I need
to get the system time in Micro second there is a equivalent method? Or
there exists any suggested solution?
Thanks
Dany

Why do you need such accurate timing ?
I'd be suprised if anyone seriously relies on millisecond timing in
Java, never mind calling through to JNI to get microsecond timing.
If that's even possible in native code.
The garbage collector can cause delays/pauses in a java program and
throw timings off by at least 500 milliseconds, probably more under big loads.
If you just want a more accuruate way to reset a random seed, there's probably other ways...
regards,
Owen

To get the system time in milliseconds

i want to get the system time in milliseconds
eventhough the MLS(milliseconds) is given in the select statement as follows,
sql>select to_char(sysdate,'MON:DD:YYYY.HH:HH:MI:SS:MLS') "NOW" from dual;
does not seem to work.
it throws the error that
ORA-01821: date format not recognized
please give a solution
thanks in advance
null

Hi,
Yes, any of Oracle tools could not provide the milliseconds.
Then why cant not use external procedures (RPC) and get a time string from OS.
These are steps:
1. Create a C shared library.
(Some times U have to go for OCI programs.)
Milliseconds provision is there in C. ( use tm struct). Make a string as ur format by using any string functions in C or sprintf(). By using return, return this string.
Here error may come, if u are using pure C. Better to go for OCI call back methods.
2. Create oracle library and attach this shared libary with it.
3. Create external procedure/function and connect this.
If u want code, I can post it here.
with regards,
Boby Jose Thekkanth,
Dharma Computers(P) Ltd.
Bangalore-India.
www.dharma.com.
null

Set system time in both unix and NT

i need to write a software to be run on the 2 platforms to set the system time if anyone know how to go about doing it please guide me along and provide me some code.
thanks in advance

You cannot set the system time using pure Java, so I guess you'll have to use JNI or Runtime.exec().
If you use JNI, you'll have to set up a native method and the build a different DLL for each platform. From my point of view this is the cleanest way.
Using exec() requieres to detect the system your program is running on, and then call the appropiate external program or command.

Program speeds up System time?

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