How to optimize the speed of execution of a specific piece of code?

Similar Questions

• How to optimize the performance of this code?

  I have two clips on a flash project. One of them is fixed and the other can be moved with the arrow keys of the keyboard. The two clips have irregular shapes, so HitTestObject and HitTestPoint does not work very well. I have a function that detects the collision of two clips using bitmap. I wanted to update the position of the Movie clip mobile so I put the function of collision detection under the ENTER_FRAME event listener code. It works fine, but when I add many fixed film clips (about 10 clips fixed in an image), the game (.swf file) becomes slower and slows down the performance of the PC. I thought that my collision detection function has a negative effect on the performance of the PC, so I used the class on this page: https://forums.adobe.com/thread/873737
  but the same thing happens.

  You told me how to do to speed up execution of my codes?

  Here's the part of my code:

  stage.addEventListener (Event.ENTER_FRAME, myOnEnterFrame);

  function myOnEnterFrame(event:Event):void

  {

  If (doThisFn) / / doThisFn is a variable to allow or prevent the kind of mobile film clip moved with arrow keys

  {

  If (left & &! right) {}

  Player.x = speed;

  Player.rotation = player.rotation - speed;

  }

  If (right & &! left) {}

  Player.x += speed;

  Player.rotation = player.rotation + speed;

  }

  If (up & &! down) {}

  Player.y = speed;

  }

  If (down & &! up) {}

  Player.y += speed;

  }

  The clips of film sets are wall1, wall2, wall3, wall4,... and so on
  the following code checks to see how many walls exist on each image and pushes them in table wallA

  for (var i: int = 0; i < 1000; i ++) / / you can put up to 1000 object of wall in the table wallA

  {

  If (this ['wall' + i]) / / if the wall object exists, push it into the table wallA

  {

  wallA.push (this, ['wall' + i]);

  }

  }

  for (i = 0; i < wallA.length; i ++)

  {

  If ( h.hitF (player, wallA [i]) | gameOverTest) / / this code checks whether or not the player (the mobile clip) hit the walls

  {

  trace ("second try");

  gameOver.visible = true;

  doThisFn = false;

  }

  }

  I think the following codes are easy to turn and run. I think that the performance problem is due to previous codes.

  
  

  If (player.hitTestObject (door))

  {

  Win.Visible = true;

  doThisFn = false;

  }

  If (key) / / if there is a key on chassis

  {

  If (player.hitTestObject (key))

  {

  Key.Visible = false;

  switch (currentFrame)

  {

  case 4:

  wallA [0] .visible = false;

  .x wallA [0] = 50000;

  break;

  case 5:

  wall14. Play();

  wall8.x = 430;

  break;

  }

  }

  }

  }

  }

  It's a simple question that doesn't usually have a simple answer.

  Here is an excerpt of a book (Flash game development: in a Social, Mobile and 3D world) I wrote.

  Optimization techniques

  Unfortunately, I don't know any way completely satisfactory to organize this information. In what follows, I discuss memory management first with sub-themes listed in alphabetical order. Then I discuss the management of CPU/GPU with subheadings listed in alphabetical order.

  This may sound logical, but at least, there are two problems with this organization.

  1. I don't think it's the most useful way to organize this information.

  2. memory management affects the CPU/GPU use, so that everything in the section of memory management can also be listed in the section CPU/GPU.

  In any case, I'll also list information in two other ways, from the easiest to the most difficult to implement and more for much less.

  Two of these later inscriptions are subjective and dependent on experience developer and capabilities, as well as environmental test and the test situation. I very much doubt there would be a consensus on the order of these lists.  However, I think that they are still valid.

  Easier to the more difficult to implement

  1. do not use the filters.

  2. always use the reverse for loops and avoid loops and avoid while loops.

  3. explicitly stop timers for their loan for gc (garbage collection).

  4. use the weak event listeners and remove headphones.

  5. strictly type variable when possible.

  6. explicitly disable interactivity mouse when interactivity smile not necessary.

  7. replace dispatchEvents with callback functions whenever possible.

  8 it would be gc stop sounds for the sounds and SoundChannels.

  9. use the DisplayObject most basic need.

  10. always use cacheAsBitmap and cacheAsBitmapMatrix with air applications (i.e., mobile).

  11. reuse of objects when possible.

  12 Event.ENTER_FRAME loops: use different listeners and different listener functions applied to DisplayObjects as little as possible.

  13. the pool instead of creating objects and gc objects ' ing.

  14. use partial blitting.

  15. use step blitting.

  16 use Stage3D

  Biggest advantage less

  1. Use the blitting Stadium (if there is enough memory system).
  2. Use Stage3D.
  3. Use partial blitting.
  4. Use cacheAsBitmap and cacheAsBitmapMatrix with mobile devices.
  5. Disable explicitly interactivity mouse when interactivity smile not necessary.
  6. Do not use filters.
  7. Use the most basic necessary DisplayObject.
  8. Reuse objects whenever possible.
  9. Event.ENTER_FRAME loops: use different listeners and different listener functions applied to DisplayObjects as little as possible.
  10. Use reverse for loops and avoid the do loops and while loops.
  11. The pool instead of creating objects and gc'ing.
  12. Strictly, type variable when possible.
  13. Use weak event listeners and remove headphones.
  14. Replace dispatchEvents by the callback functions whenever possible.
  15. Explicitly stop timers on loan for the gc.

  16 stop sounds for the sounds and SoundChannels be gc would be.

• How to increase the speed of the PC without adding RAM

  PLEASE HOW CAN INCREASE THE SPEED TO RUN THE PC WITHOUT ADDING MORE RAM

  Some reasons for the slow pace of the computer:

  1. computer has not been maintained - http://www.elephantboycomputers.com/page2.html#Maintenance

  2. the computer is infected with the malware - http://www.elephantboycomputers.com/page2.html#Removing_Malware

  3. the disk is too full. Remove useless stuff, uninstall unused programs. Do not forget to save!
  http://www.elephantboycomputers.com/page2.html#Backing_Up

  4. flaky third party software. Toolbars and modules are particularly guilty in this area. Uninstall toolbars (Google, Yahoo, ISP brand, etc) and look at what modules are in use in your browser (s).

  5. computer has too many unnecessary programs/processes running in the background. Manage your Startup:

  For XP - How to troubleshoot using the Msconfig in Windows XP utility - http://support.microsoft.com/?id=310560
  The free Autoruns program is very useful for managing your Startup - http://www.microsoft.com/technet/sysinternals/default.mspx

  For Vista/Windows7 - Start Orb > Search box > type: msconfig and when it appears in the results area above, right-click and choose 'run as administrator '. Autoruns is also very useful.

  6. the user runs an inflated/invasive such as Norton and McAfee antivirus program. Replace it with a better program. I recommend NOD32 (commercial) or Avast (free). Avira is also good, but the free version has an unpleasant reminder screen (Google for instructions on how to disable it). The user can also run several real-time antivirus/firewall/security programs.

  7. the user has installed new programs that are processor and/or memory-intensive (Photoshop, AutoCAD, Mathmatica or similar) and does not have the power of the equipment.

  8 drive fails and is in PIO Mode. It's very much slow (like being in 1985). See Hans-Georg Michna here information - http://winhlp.com/?q=node/10

  In addition to the above, see also http://miekiemoes.blogspot.com/2008/02/help-my-computer-is-slow.html

  Note: If the computer has always been slow, in addition to the above user may have bought a machine with a less powerful processor and not enough RAM (memory). The normal use of the computer, 512 MB to 1 GB is sufficient for XP; Vista should have a minimum of 2 GB; Windows 7 is less demanding than Vista, but the minimum of 2 GB should also be used. MS - MVP - Elephant Boy computers - don't panic!

• How to decrease the speed "duplicate"?

  How to decrease the speed "duplicate"? I use this script, but my eth0 show me 100 MB/s: run {allocate channel ch1 device type disk rate 10 m;}   allocate channel rates auxiliary ach1 devices type disc 10 m;   target database duplicate to dbtest02 of the active database. } What I did wrong?

  A transfer on the network will use all of the bandwidth is available. If you want to limit the consumption of bandwidth, check with the network team, if they can implement all controls using intermediate switches between the two servers.

  Hemant K Collette

• How to increase the speed of downloads

  How to increase the speed of downloads

  Everyone please help...

  Faster internet connection.

• How to lower the speed of writing for burning a DVD?  It gives me no other choice!

  How to lower the speed of writing for burning a DVD?  It gives me no other choice!

  Brand of the disc can be a problem.

  Most of us don't burn with yet. There were serious problems that several generations back and I never use to burn now other than for testing. Construction of an image and burn with ImgBurn if you're on PC; Toast if mac.

  I was also worried that discs that burn successfully to you run the risk of not to play well on all players.

• How to optimize the query with a join of virtual tables

  I'm working on a query that is get the data of virtual tables 2 and b
  one is formed by the Union, all say 4 queries and b is formed by the Union, all say 3 queries
  then these two virtual tables and b are joined on a column common and data are extracted from their part.
  Problem is that there is about 1 minutes each in the two virtual tables has and b. If individual a and b queries virtual takes about 5 seconds to retrieve data
  but the join on column takes about 25 seconds to retrieve data.
  Can someone guide me how to optimize the recovery of joining 2 virtual tables having large data
  
  Thank you

  Please read these:

  When your query takes too long
  When your query takes too long...

  How to post a SQL tuning request
  HOW to: Validate a query of SQL statement tuning - model showing

• Gateway XP is slow, how to increase the speed?

  My husband is using my old gateway with only 37gbs. to get the speed increase I can or should increase the ram with one of these $30... 00 plug-ins, all what he has on the gateway shortcuts website, no photos, music, files, etc., but it is slower, so you can imagine. It is using XP. two computer guys - Ha! says I need more ram and no more memory, they should me these tips that you just unscrew the back of the gateway and connect.

  * original title - will plug into one of these thingys increase speed ram? (adaral did nothing!) *

  Hello

  See the bottom of the articles that might help you improve the performance of the computer.

  Slow PC? Optimize your computer for peak performance
  http://www.Microsoft.com/athome/Setup/optimize.aspx
  How to make a computer faster: 6 ways to speed up your PC
  http://www.Microsoft.com/atwork/maintenance/speed.aspx

• How to optimize the WRT 400n for Internet TV

  I've been using a WRT 400n for awhile with 2 pc... a tower near him and a computer laptop about 50 ft, in another room. As much, I would say I am only using the 2.4 GHz to channel 11 band.

  We have just added a Sony Bravia HD TV and a Sony Blu - ray player VD (which is really, as far as I can see, a cool internet access device which can read the DVD). Favorite use is to watch TV shows and movies from Amazon. Problem is, the streaming is very uneven and sometimes what Amazon calls 'connection speed' (which I think is really the network bandwidth) gets so low that the buffering will fail and lose us everything we see.

  So, my question is, how to optimize?

  1. Can I configure the WRT 400n somehow so that the TV / DVD device combination uses 5.0 GHz and this could help. If this is the best option, where can I find detailed advice?
  2. Y at - it than available th firmware update might help?
  3. Could I consider an access point or a Repeater?
  4. Should I go for a router upgraded?
  5. Displacement of the top would REALLY help? I am very reluctant to do this - it is a major concern, but if it's the only option...

  As you can tell, I am naïve in these things and would really appreciate wise counsel!

  Thank you.

  1. the recommendation mentions of connection speeds, for example 10 Mbps. This has nothing to with the frequency band use for a Wi - Fi connection.

  2. the specifications for the BDP-S780 says: ' Wi - Fi built in: 802.11 b/g/n. It does not support the band 5 GHz. 5 GHz band is not an option.

  3 once again: the best solution is to ethernet wiring.

• How to increase the speed of the laptop

  my laptop runs slow I want to increase his speed, how do I make it possible?

  Hello

  You can install more RAM.

  Make sure that your machine can do:

  http://www.crucial.com/USA/en/systemscanner

  If Windows 7 32-bit max RAM, you need to have is 4 GB

  ___________________________________

  If your machine has only a quantity of small-medium of RAM already installed, there is ReadyBoost:

  http://www.bleepingcomputer.com/tutorials/using-Windows-ReadyBoost-to-increase-performance/

  ___________________________________

  See if this helps you improve performance.

  Search for malicious software with the FREE version of this program.

  This is the right link to download included.

  And does not accept the option "Pay for the version" trial installation

  Download, install, update and scan your system with the free version of Malwarebytes AntiMalware:

  http://www.Malwarebytes.org/products/malwarebytes_free

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  You can clean your hard drive using these two methods.

  "Delete files using Disk Cleanup"

  http://Windows.Microsoft.com/en-us/Windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=Windows-7

  Using the free CCleaner program:

  http://www.Piriform.com/CCleaner

  In NO case use the registry cleaning Option in CCleaner

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  And it is not recommended to use a register or a program of cleaning/TuneUP/utilities they can do more harm to your any good operating system that they claim to be able to do.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  Make sure you have the latest updated drivers:

  Access the site on your computer or equipment manufacturing > Driver and Software Support Section > search your computer or hardware model number > then your operating system > locate the correct drivers > download and install.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  What are the other steps, which does not include some of the above:

  "Optimize Windows for better performance.

  http://Windows.Microsoft.com/en-us/Windows/optimize-Windows-better-performance#optimize-Windows-better-performance=Windows-7

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  It would be a good idea also run the System File Checker tool to check that everything is correct in the system files.

  "How to use the System File Checker tool to fix the files on system missing or corrupted on Windows Vista or Windows 7"

  http://support.Microsoft.com/kb/929833

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  1. Open an elevated command prompt. To do this, click Start, click principally made programs, Accessories, right-click guest, and then click run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click allow.
  2. Type the following command and press ENTER:
     sfc/scannow

     The sfc/scannow command analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  See you soon

• How to regulate the speed of the fan on Satellite Pro L650 - 15 c?

  I can regulate the speed of the fan in my laptop (Satellite Pro L650 - 15 c)?

  The reinstallation of Windows 7 the fan is always moving up. How can I set this fan?

  greeting of the developing countries

  Hello

  Open windows power management and settings for the management of the power supply you use. You will find the advanced power option. Open it and you will find Toshiba power saver options.

  Open all the available option and check the settings of the cooling method. Set to optimized battery option.
  This should reduce the speed of the cooling fan.

  Please test and validate the results.

• How to control the speed of the fan on Satellite A660 - 11 M?

  Please any body know how to control the fan speed its always of 69% and making bad noise and the cpu use is 3% no to treatment high I try avancΘs power but still runing high speed

  Advanced power settings go to Toshiba power Saver saver > cooling method. There are minimum level. Change back to your power management for a second power plan, and the fan must be much quieter.

  I did it on my Satellite A660.
  Before changing PC Toshiba, health monitor showed CPU temperature 41% and the speed of the fan was 67%. After changing the method of cooling fan speed is 0%.

• How to adjust the speed of the fan on Satellite L450D?

  My L450D has been making warm lately (~ 100) and I need to know how to change the fan speed enough desperately. I'm on the last BIOS v1.33 and still no change.
  SpeedFan simply doesn't work.

  Can I get help?

  Hello

  Mobile computers to control the cooling fan is quite limited and on Toshiba laptops, you have an option only. Enter power options advanced power profile that you use and you will find option methods of cooling options.
  Put please the optimized battery and it must reduce the speed of the cooling fan.

• How to increase the speed of data acquisition?

  Hey, currently I using 6210 OR of data acquisition and control switch. I used labview to periodically check the 7 switches and read data from 7 channels in the meantime (1 sample on request). I ran 70 loops for 10 groups of data, the cost of the time looked like 2.2 seconds.

  I would like to end a 700 loops in 2 seconds, is it possible to improve?

  Thank you

  PEM

  Look at the Terminal stop of the DAQ Assistant Express VI. You are starting and stopping of the task for the acquisition of data on each iteration of the loop.

  Starting from the help file:

  Stop

  Specifies to stop the task and release device resources when this Express VI ends execution. For ongoing tasks, this entry is FALSE by default, which means that the task is running until the application terminates. To stop the task, you can use the device again in the same application, wire control wire you the Conditional stop this entry to the same terminal of the while loop. For single-point and finished tasks, this entry is TRUE by default, which means work stoppages after all samples are acquired. To optimize the performance of single point when using this Express VI into a loop, wire control wire you the Conditional stop this entry to the same terminal of the while loop.

  Also from the help file:

  Continuous single point of entry or exit, the of VI Express DAQ Assistant cannot allow optimal operation. See Acq & chart voltage-Single Point optimization VI in examples\DAQmx\Analog In\Measure Voltage.llb for an example of techniques to create more powerful applications, single point of I/O.

• Problems with the speed of execution on my T420

  I'm not very tech savvy, so bear with me please if I have forgotten something or doing something wrong.

  Just to clarify, my laptop is a Lenovo ThinkPad T420i, Type 4178. It is about 2 years old.

  I have Windows 7 64 bit.

  My laptop takes about 2-5 minutes to turn on, sometimes it turn on at all. The screen freezes every 15 seconds, but I'm still able to move my cursor. He accused some too. For example, type 'how to download google chrome' will take me sometimes a whole minute, because the only parts of the sentence will be displayed on the screen at once. My keyboard responds very well. The problem is not with wireless internet, because even if the wireless is off the laptop computer is still incredibly slow. It is impossible to watch videos because the screen freezes so.

  I had this problem with the speed of my laptop for about 2 months now. I had finished it wiping back to factory settings, downloaded every scanner malware and virus known to man (none of them found no problems with it) and updated all my drivers.

  I don't really know how to do much on my laptop other than the use of the internet. I would really appriciate instructions step by step.

  Thank you.

  Hello. I did it all at once (up to 8 GB, SSD of RAM HARD disk and reinstall Windows), that's why I can't answer you, how did each of them, but after all, my absolutely BRILLIANT T420 representation!
  Chip graphic is now the weak link, and, unfortunately, it cannot be replaced.