Why is wireless performance faster than wired WRT54G v8?

Have you checked the different wired computer..? or on all the wired computers are having same problem...?

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Wireless speed faster than direct hookup E4200

Have high speed cable and find that the wireless speeds using Speedtest.net are faster than when hooking directly into the E4200. Do I have something set incorrectly?

Have you tried checking the cables or the specs of your LAN card?
You see, the e4200 router is a gigabit router. This means, your LAN card must also be a gigabit adapter to have a better wired connection.
"Don't fix it if it ain't broken."

Strange AIR performance; == faster than ===

Hi.
I have been hunting down some strange memory usage in one of our games, and tracked it down to numbers being compared to 0.0 in a loop.
I have concentrated the observations down to a small profile snippet.
Observations:
1) I expected the first two profiles to take the same amount of time as everything is typed. But comparing a Number that is a natural is a LOT faster. (only true on desktop and android).
Why is this, is the jitted versions storing Numbers that are natural (whole numbers) as integers, and thus causing a log of type conversion (and memory allocations)?
2) I have been told (and experienced on iOS) that using the === operator is faster than == when a type coercion is possible, test 1+2 vs. 3+4 shows that this is not always the case on some of the platforms.
Is this normal? have I messed up something when building my air apps? If this is reproducible, can somebody with better knowledge of the internals of the AIR runtime explain when it's better to use === over == (for performance).
private var _unused:Number = 0;
private function profileNumberCompare():void
   var t0:int = getTimer();
   _unused += profileEqEqEq(0.1);
   var t1:int = getTimer();
   _unused += profileEqEqEq(1.0);
   var t2:int = getTimer();
   _unused += profileEqEq(0.1);
   var t3:int = getTimer();
   _unused += profileEqEq(1.0);
   var t4:int = getTimer();
   trace(t1 - t0);
   trace(t2 - t1);
   trace(t3 - t2);
   trace(t4 - t3);
private function profileEqEqEq(inc:Number):Number
   var x:Number = 0.0;
   var z:Number = 0.0;
   for(var i:int = 0; i < 10000000; i++)
   if(x === 0.0) z += 1;
   x += inc;
   return z;
private function profileEqEq(inc:Number):Number
   var x:Number = 0.0;
   var z:Number = 0.0;
   for(var i:int = 0; i < 10000000; i++)
   if(x == 0.0) z += 1;
   x += inc;
   return z;
Results:
Desktop, adl (E5530 @ 2.4GHz):
1411
171
68
71
ipad4:
52
53
53
55
nexus5:
1230
373
148
146

Since your iPad is only 4 months old, I'd make an appointment at your local apple store and have them check it out.

Why does audio run faster than video after burning my iMovie project in iDVD?

I created a project in iMovie HD and shared it to iDVD 6. When I played the finished disc, I noticed that the audio ran much faster than the video. I rechecked my movie and audio clips in iMovie to make sure they were matched correctly, and I saw no problem there. I burned the disc again through iDVD and got the same problem when I played it in a DVD player.
I have never had this problem before and I've been working on dvd projects all week. I think the only difference with this movie project is that I had movie clip audio and background audio playing at the same time at some parts of the movie, but I don't know if that's the issue.
Any suggestions?

Hi
And just to add to OT-s brilliant suggestions - really - Do a Save as a DiskImage ! IMPORTANT !
• When free space goes down on the Start-Up hard disk to 5Gb or less - strange things occurs - Yes even audio out of sync - to not working DVD at all.
I secure a minimum of 25Gb free space when using SD-video to iDVD - if HD material I would guess 4-5 times more as it has to be re-calculated into SD and this needs space.
DVD - is as standard SD-Video (as old time CRT-TVs) - even if You use DVD-Studio Pro or iDVD or Roxio Toast™ - That's what it is and using HD material doesn't improve a bit (may be even give a lesser result)
Yours Bengt W

WRT54GS v4 - Weird! Wireless Faster than Wired - Please help!

Hi There,
My wireless Linksys router is throttling the bandwidth of all WIRED connections. I know this because the wireless gets me speeds up to about 10-11Mbps, but Wired only gets about 4.5mBps. When the PCs are wired directly into Cable modem, the speed is up to the RoadRunner promised 10mbps.
Does anyone know of a fix for this so my Wired PCs can utilize the extra bandwidth I am paying for?
BTW - my router has the latest firmware (1.06.3)
Thank you!
-Mark

Please upgrade the fimrware of the Router.
www.linksysbycisco.com/downloads
Follow these steps to upgrade the firmware on the device: -
Launch a web browser on your computer, and enter the Router’s default IP address, 192.168.1.1, in the Address field. Then, press Enter
Leave username blank & in password use admin in lower case...To upgrade the firmware, click on the Administration tab and then click
the Upgrade Firmware sub-tab. Click the Browse button and select the .bin firmware file. Finally, click the Upgrade button and follow the on-screen instructions.
Firmware Upgrade/Reflash
Follow these steps to upgrade the firmware on the device: -
Open an Internet Explorer browser page.In the address bar type - 192.168.1.1
Leave the username blank & in password use admin in lower case...
Click on the 'Administration' tab- Then click on the 'Firmware Upgrade' sub tab- Here click on 'Browse' and browse the .bin firmware file and click on "Upgrade"...
Wait for few seconds until it shows that "Upgrade is successful" After the firmware upgrade, click on "Reboot" and you will be returned back to the same page OR it will say "Page cannot be
displayed".
Press and hold the reset button for 30 seconds...Release the reset button...Unplug the power cable from your router, wait for 30 seconds and re-connect the power cable...Now re-configure your
router...
But just for the Concern did you check when you connect your wireless Laptop hard wired to the Router how much speed do you get on the Laptop on the local area connection atleast you will get a better picture where is the problem, as you are gettings a good speed on on the laptops wirelessly.

Why is Firefox slow on Wireless but fast on Wired?

I have an HP Laptop 6730b which was given to me from my company. When I am at work, and connected to our LAN by an Ethernet Cable, Firefox runs perfectly fine and starts up super fast.
Then when I come home and turn on the Wireless on the laptop, Firefox takes like 20 seconds to startup and 20 seconds on every click. Whether clicking on a link of the same website or clicking on a favorite in my favorite tab, it takes 20 seconds to "Think" first then it loads quickly. This "thinking" part is what's killing me and it ONLY HAPPENS ON WIRELESS!!!

Actually, here is exactly my problem: I bring my work laptop home with me. I connect to my wireless at home and my internet works just fine. Through Internet Explorer 6.0 that is.
But with Firefox, its super slow. Takes 20 seconds to open, and 20 seconds on any link or favorite I click on.
And here is the confusing part: the problem goes away when I log into my company's network through the VPN client. Once logged in there, Firefox is back to normal and fast again.
Only when I'm not on VPN at home, does Firefox give me this problem. I have Firefox on my personal computer at home and it goes fast, so why does it give me a problem here on my work computer. Heck even IE 6.0 works normal on my wireless. It's just mind boggling. I would normally install Safari but my company won't allow it at this time.

Infinity HH3 wireless performance - worse than HH1...

Back in May we signed up for the 6 month free Infinity trial.
Whilst wireless speeds in the room in which the hub is placed are OK (approx 30-35mbps), speeds throughout the rest of the house are much lower.
We have a TV with wireless connection on which we want to watch using iPlayer. We have also tried the Wii and PS3. iPlayer worked fine (on standard resolution - no chance on HD!) when we had the HH1, but with the HH3 we get buffering and interruptions even on low resolution. Speedtest on a tablet next to the TV shows speeds of less than 1 up to about 8, yet even when the higher speeds are shown we still get occational buffering on low res.
The HH3 is in the same room that the HH1 used to be (albeit not identical positions due to cabling restrictions) - and unfortunately this is at the opposite end of the house to the living room and TV.
Is there anything that we can do to improve the wireless reception? I'm thinking of channel settings or something to boost the signal. I can't easily move the HH3 without having a lot of trailing wires, and am not willing to pay out for new devices. I'm fairly technically competent, but am a novice in terms of WiFi.
We have a couple of months left on the free trial. If we can't sort out something, then I think we'll be going back to the old service at a third of the price of Infinity. At least we can then watch iPlayer again.
Thanks.

If you are paying for a fast connection, then to make full use of the speed, you are better using Ethernet cables or powerline adapters.
There is some wireless help here.
Wireless connection problems
and some alternatives here
Network connection problems and possible solutions
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Why is wireless connection slower than PC?

I just received my new Macbook Pro today but the wireless download speed is about 1.6 mbps compared to about 5.0 mbps on a Dell notebook I have. Both are at my house on the same network. Is there an adjustment I need to make to the MAC?

I have a wired comcast modem that I run through a router to an airport (original). I get wildly different results on broadband speed depending on the test service I try.
I just found one called "Speakeasy" (http://www.speakeasy.net/speedtest/) that lets me test my speed to different cities. I live in the Philadelphia area. My speed was greatest (4.7 Mbs) to Washington DC, abou 4 MBS to NYC, 3 to Atlanta and only about 1.2 to San Francisco. These values were reproducible. Upload ranged between 684-715.
Before I got a new modem from Comcast (my old one was from the time they started service here about 6 years ago) my speed was MUCH slower.
Also, using my son's 12"PB G4 his speeds are slower, too, possibly because of the signal/antenna issue.
So, for me I would say to try several services to find one that is reproducible, then test both your machines again. If the PC is plastic then it will get better reception than the Aluminum MBP. Otherwise, some of the other answers here (e.g., change modem) may be useful.

Why AWT apps are faster than Swing apps?

I have written applications using both AWT and Swing. While running under Windows, I feel that AWT apps are much faster and smoother. In contrast, Swing apps fare terribly. Regardless, I can not go back to AWT because of thier limited capabilities.
I love Java APIs, it is great for programmer. But what about the consumers? Consumers do not care whether it is written in Java or Visual C++?
I am having a mid-"programming" crisis. I do not want to but, but would be forced to use VC++ for desktop apps abandoning Java.
I would like to know if you are a serious desktop programmers, what is your motivation for using Java, not VC++ or something?
Thanks.

well, for me, it's that one it's Platform Independent. and that does come in handy when your work uses macs instead of normal PCs. Second, it's free to use, unlike VC++ and Pseudo Code (Visual Basic), you don't have to pay unbeleivably large sums of money to get a good compiler. And then there's the whole "Swings Apps are Slower", yes they are, however, if you program them write, they only take a while to initialize, once that is done they run as fast as any Native Program unless you have a tremendous amount of calculations and dynamic generation of components. And also the no Excecutables, true, and... not true, creating a Jar File is almost the same as making a making an EXE, only Jar Files are... platform independent.... and unlike C++ which gives you enough rope to run around the world three times, jump over the moon and hang yourself for actually using it, Java is a clean programming language, not a whole lot of those nasty characters and styles that ugly up your code. at least these are the reasons why i pick Java as the language to come out on top of all others.

Why Foxit reader is faster than Adobe Acrobat ?

I see Foxit open faster pdfs than Adobe, do you have the same better open time ?

What version of Adobe Acrobat? Or is it the free Adobe Reader?

Macbook is faster than my Macbook Pro?

I did a quick test running the Universal Binary of Firefox and surfing a few sites.
Why is my Macbook faster than my MBP? Both have the same 2 GHz core clock.

It could be the power management system. I don't know the numbers but if you download CoreDuoTemp. you will see when you are just woing a little web surfing the mhz are not always at 2.0ghz. Do a test see what the mhz are doing the same task on both.

Why is Wireless G router slower than Wireless B?

I have a wireless B router (BEFW11S4 V4) that is dropping my internet connection sometimes on a daily basis. To restore it, I have to unplug the power and plug it back in. It's a pain and interferes with my work, so I purchased a wireless G router (WRT54G2) to replace it. Setting it up was quick and painless, but slowed my internet to a crawl. I know that wireless connections are slower than wired, but a direct connection was about 10 times faster (according to several online speed tests) which I find unacceptable.
I have since removed it and gone back to the older faulty router to restore my internet connect to a speed that at least allows me to do my work. I was not unhappy with my connection speed before. I only replaced the router because it was dropping the connection, but I cannot understand why the new router was so much slower.
Any thoughts, hints, or suggestions before I return the new router to the store?
Thanks!

1) What Internet connection speed are you paying for?
2) What Internet connection speed do you get when you wire your computer directly to your modem?
3) What Internet connection speed do you get when you wire your computer to the WRT54G2?
4) What Internet connection speed do you get through a wireless connection to the WRT54G2?
5) Is your computer's wireless adapter a wireless b? g? n?
There are many causes for poor wireless connections, and many solutions:
First of all, give your network a unique SSID. Do not use "linksys". If you are using "linksys" you may be trying to connect to your neighbor's router. Also set "SSID Broadcast" to "enabled". This will help your computer find and lock on to your router's signal.
Poor wireless connections are often caused by radio interference from other 2.4 GHz devices. This includes wireless phones, wireless baby monitors, microwave ovens, wireless mice and keyboards, wireless speakers, and your neighbor's wireless network. In rare cases, Bluetooth devices can interfere. Even some 5+ GHz phones also use the 2.4 Ghz band. Unplug these devices, and see if that corrects your problem.
In your router, try a different channel. There are 11 channels in the 2.4 GHz band. Usually channel 1, 6, or 11 works best. Check out your neighbors, and see what channel they are using. Because the channels overlap one another, try to stay at least +5 or -5 channels from your strongest neighbors. For example, if you have a strong neighbor on channel 9, try any channel 1 through 4.
Also, try to locate the router about 4 to 6 feet above the floor, in an open area. Do not locate it behind your monitor or near other computer equipment or speakers. If you have external antenna, they should be vertical.
Also, in the computer, go to your wireless software, and go to "Preferred Networks" (sometimes called "Profiles" ). There are probably a few networks listed. Delete any network named "linksys". Also delete any network that you do not recognize, or that you no longer use. Delete your current network (this will remove any old settings.) Reboot computer. Return to "Preferred Networks" and re-enter your current network info (SSID, encryption (if any), and key (if any) ). Then select your current network and make it your default network, and set it to automatic login. You may need to go to "settings" to do this, or you may need to right click on your network and select "Properties" or "settings". Reboot computer. You should connect automatically (it can take up to 2 minutes). If you have trouble connecting, in the computer, temporarily turn off your computer software firewall, and see if that helps.
If the above does not fix your problem, download and install the latest driver for your wireless card.
Some users have reported improved wireless performance by switching from WEP to WPA encryption.
If you continue to have problems, try the following:
For wireless g routers, try setting the "Transmission Rate" to 54 Mbps.
If you still have trouble, download and install the latest firmware for your router. After a firmware upgrade, you must reset the router to factory defaults, then setup the router again from scratch. If you saved a router configuration file, DO NOT use it.
Hope this helps.
Message Edited by toomanydonuts on 01-07-2009 05:14 AM

Why is JVM faster than CLR?

hi
i wrote a N-body algorithm in both Java and C# (shown below). i executed it using .NET CLR and JDK1.4.1. in JDK it is twice as fast as .NET (on win2000). now i am trying to find out why is it so??
the interesting thing is that i ran some other algorithms like FFT and graph alogrithms, and they are faster in .NET. so i want to find is there some operation in the below algorithm that is making it run faster in JDK.
in general, what can the possible reasons be for JVM to run faster than CLR?
thanks
double G = 6.6726E-11;
double difference = 0.0;
for(int i=0; i<numBodies; i++)
     accelarations[i] = 0.0;
     for(int j=0; j<numBodies; j++)
          if(i != j)
          difference = radii[i] - radii[j];
          if(difference != 0)
          accelarations[i] += masses/(Math.pow(difference, 2));
     accelarations[i] *= G;

Interesting N-Body problem that treats accelerations as scalars.
Anyway, if there is no optimisation for small integer powers in the Math.pow() method, then I'd expect almost all the time is used there or in its equivalent in .NET. Hardly a meaningful test of relative performance.
Try using (difference * difference) instead.
Sylvia.

Firefox slow wireless but fast wired. No issues running IE wireless. Tried system restore, fact. reset, turned off accl, disabled addons, run in safe mode.....

So i have an HP e118dx running on windows 8.1 with very little software on it. Currently running FF 37.0.1 and in wireless mode it always hangs up, runs slow, or times out. When plugged in it runs just fine. Can get on net using IE via wireless and no issues. So it seems to be something specific to FF on the wireless side. Thought it might have been my wireless card but running IE just fine seems to rule that out.
Have already tried system restore a few times, factory reset, turn off hardware accel., run in safe mode(FF), disabled add ons and nothing seems to help. If i have tabs open while wired, then go wireless and refresh the pages or browse on the already open pages i tend to get a couple minutes of trouble free experience before it slows to a halt again.
To recap....FF on wireless=slow and wired=fast. No difference when using IE wireless---always fast.

Not sure what you mean by # of connections being made. Not sure if that means tabs open, or folks using the actual wireless network. A while back when i was going through this with the isp i got a crash coarse on how to go into the modem and check a bunch of different stuff, as well as reset things. When looking in there only 1 or 2 computers showed on the network. The network is password protected......i guess protected only to the extent that a pswrd can. Not certain if someone nefariously connected somehow.....didn't show up when looking for users on the network though.
The first bullet point......Not sure how to do any of that so i'd say no.
Second bullet point......Yes, did lots of clearing temp files, caches, history, etc. along with systems restores and factory resets. although not exactly sure what you mean by dns cache. Might have done this but don't recall specifically seeing that.
Third bullet point.....It doesn't make any difference on this end whether its on no proxy, auto proxy, manual proxy. While i have no idea what all this stuff does/affects performance i played with it on all different settings and nothing changed here. Put it back to no proxy.
The thing is even when my wireless FF is acting up other devices in the home can be on the wireless with no issues. Think the other devices are using Chrome and some phone wifi hookup. Keep in mind if i switch to IE on the same device with FF windows open the IE will run just fine. At any given time there should only be 1-4 devices on the network so i'm guessing that shouldn't overload anything. Besides none of the other devices ever seem to come into this issue.
There always seems to be some issue that pops up after updates. Can't ever just leave working things alone.

Why would oracle 9i drivers faster than oracle 10g drivers against a 10g?

I'm skeptical of the claim but we have a system at work and tests have been done that apparently is showing that the older oracle 9i thin jdbc driver is performing a fetch faster than the 10g driver. This for a query that is currently doing a full table scan.
Is there a default setting in 10g vs 9i that can explain why the perceived query performance is faster with the older thin driver?

steffi2 wrote:
What was observed was that when they started using the old Oracle 8.1.7 8i client jar against this 10g data the actual execution plan changed dramatically to use indexes where was previously it was not doing so and it was doing a full tablescan.
Why would the introduction of the old 8i jar have this affect?Maybe the test is flawed. For example one test was run with the network was loaded while the other wasn't. Or different connection parameters.
That said I believe somewhere the claim has been made that Oracle drivers changed from one API to another somewhat recently. Thus that could be the source.
Or maybe something to do with hints.

Why is wireless performance faster than wired WRT54G v8?

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