initial thoughts, wifi tests - Asus Eee Pad Transformer Prime

picked it up from gamestop tonight. Dallas northpark location. manager said they were told today that docks would be coming from asus in about 2 weeks. he said asus has not even released them yet.
let me know if you have any other questions.
good build everything seems to be running properly. games and everything seem to be working as they should. screen appears fine.
the gamestop apps seem to be easily removable. under apps uninstall was available for all added on apps
ran wifi analyzer on three tablets, xoom running tiamat rom, my wifes stock transformer, and the prime that I updated fully. all numbers are in negative mv for those unfamiliar, lower is better.
order is t1, prime, xoom
20 feet from router, t1 52, tp 52, xo 53
upstairs, 30 feet from router, 2 walls 51, 60, 54
same floor 40 feet away, no walls 52, 60, 55
outside, 35 feet, brick wall 68, 74, 70
the prime is a little lower, but not a ton.

Thanks for the test results.

Related

Higher Data Speeds

Whenever I do the speed test with my phone, the highest score I've been able to get is 1.27 mbps, but on average its about .80. I live near chicago so I figured I'd get better speeds and I noticed many people are getting up to 5 mbps.
Is there a radio update I need or is this the phone, or is it the area? I test it when i'm outside with clear skies and it stills only shows that much.
I usually get great speeds. My maximum has been near 7 mbit/sec down., and my average is 3 mbit/s.
When I hold my phone tightly, the signal goes down, but I never lose a call or any bandwidth. Try putting the phone on a table.
When I had my G1 I was having crappy speeds (maximum 1.5 mbit/s down, average 0.8 mbit/s) compared to what T-Mobile is capable of. Your problems could be location. Maybe, just maybe, it's the device, but I highly doubt that.
have u try to installed Lagfix? just my 2 cents.
Yes I did. Its been great for the overall function on the phone, but hasn't really affected the date speed.

64GB Prime Performance

Good day folks. I spent over an hour this morning going through the forum looking for a "performance thread" on the 64GB Prime specifically.
I just shipped my 32GB model back to the vendor for GPS/WIFI perf issues. GPS didn't work, and Wifi perf was ½ of the TF101 off the same WAP and less than ½ of the other tablet in the house - a Samsung Galaxy 10.1.
On first impressions the 64GB Prime appears to have been held back from the retail channel - I don't know if it simply wasn't ready or did ASUS do a little more work on it before release.
Does anyone here have the 64GB Prime now, and are you experincing issues with it similar to the 32GB model that's been out for 45 days or so?
I've got a 64GB Prime on order that I'm told will ship on January 24th, and I'm trying to decide whether to go with it or just cancel it and go with another.
I got a 64GB model - and I don't have any WiFi problems. Back home I can get over 40Mbps down and 5Mbps up (my max) within 10 feet of my router where I usually sit. At 30 feet it does drop to around 15Mbps, but that beats my phone and is almost on par with my old Eee book. It also connects fine to the WiFi on my phone and at work without any problem, and with good signal.
My GPS sucks. But it is of no use to me, so I haven't really played around with it much at all. Haven't tried any of the suggested fixes for it.
But I don't think the 64GB model is more or less prone to the issues described than the 32GB model.
I've had a 64GB model for almost a month now.
It most certainly does have the same weak/inconsistent WiFi as the 32GB model. I don't have a TF101 to compare it to, but unless I'm very close to my router, it definitely pulls speeds slower than my iPad1 and Galaxy Nexus.
If you're expecting better WiFi than your 32GB version, you're probably going to be disappointed.
Also, as far as GPS, it's just as screwy on the 64GB as the 32GB.
My 64gb has been fantastic. I don't have any issues besides the gps but no matter to me. In fact when I was inthe same room as my router I got 21mbps when my computer got 16mbps at the same time (Which I'll admit is odd because our internet is only supposed to be 12mbps). So far I love it and as far as I'm concerned with the resolution its basically a 720P display on a 10" screen when a 720P 32" TV can still look great this should be great looking when playing HD movies even if it isn't 1080 resolution.
Just ran another test:
Computer 14.03mbps
Prime: 14.67mbps
Overall, I do love my Prime, and the WiFi is adequate for my use cases. If you want more details on the WiFi performance on my 64GB model, check out the first post in this thread. The tests mentioned were all done on my 64GB Prime:
http://forum.xda-developers.com/showthread.php?t=1445717&highlight=disparity
My wife's 32 gb was delivered on Dec 19. My 64 GB was delivered on Jan 3. Both were ordered on 11/22.
Both perform exactly the same.
Cancelled the order.
I guess I'll get another TF101 or wait.
The_FNG said:
Cancelled the order.
I guess I'll get another TF101 or wait.
Click to expand...
Click to collapse
Mine both perform great. The only problem I have is the SD card pops out and GPS is very weak.
Here are my test results compared to the Samsung Galaxy Tab 10.1v (Vodafone version, not to be confused with the current 10.1)
Asus Transformer Prime Grey 64Gb ICS 4.0.3
Netherlands
Officiale release Januari 06 2012
Preorder Januari 06
Delivery Januari 10
Serial BCOKAS1XXXXX xx
Test 1a: Speedtest.net - SGT 10.1v (HC 3.01) vs ATP Grey 64Gb (ICS 4.0.3)
Computerroom
50 cm (1.5 feet) away from Router on table.
SGT 10.1v has cover on!
SGT 10.1v results are on the left.
01 39ms 72ms 22.20 Mbps 24.91 Mbps
02 35ms 67ms 24.01 Mbps 24.58 Mbps
03 36ms 68ms 22.74 Mbps 24.54 Mbps
04 37ms 66ms 21.48 Mbps 24.62 Mbps
05 34ms 68ms 15.41 Mbps 23.89 Mbps
06 34ms 71ms 22.61 Mbps 25.19 Mbps
07 38ms 70ms 22.20 Mbps 24.08 Mbps
08 37ms 73ms 22.73 Mbps 24.43 Mbps
09 34ms 69ms 23.78 Mbps 24.46 Mbps
10 36ms 67ms 21.73 Mbps 24.61 Mbps
Test 2a: Speedtest.net - SGT 10.1v (HC 3.01) vs ATP Grey 64Gb (ICS 4.0.3)
Bedroom opposite of the computerroom, seperated by a small hall and 2 doors.
9-10 meters (27-30 feet) away from Router on table.
SGT 10.1v has cover on!
SGT 10.1v results are on the left.
01 39ms 67ms 22.09 Mbps 12.91 Mbps
02 40ms 71ms 23.48 Mbps 11.90 Mbps
03 39ms 68ms 23.57 Mbps 10.41 Mbps
04 37ms 68ms 21.84 Mbps 10.87 Mbps
05 38ms 69ms 22.07 Mbps 11.64 Mbps
06 38ms 67ms 23.40 Mbps 11.95 Mbps
07 36ms 68ms 22.36 Mbps 13.90 Mbps
08 36ms 69ms 22.75 Mbps 12.23 Mbps
09 39ms 66ms 23.45 Mbps 12.70 Mbps
10 38ms 67ms 19.97 Mbps 14.51 Mbps
Test 3a: Speedtest.net - SGT 10.1v (HC 3.01) vs ATP Grey 64Gb (ICS 4.0.3)
Downstairs Access Point
9 meters (28 feet) away from AccesPoint in livingroom.
SGT 10.1v has cover on!
SGT 10.1v results are on the left.
01 37ms 68ms 20.97 Mbps 11.42 Mbps
02 38ms 74ms 13.03 Mbps 11.50 Mbps
03 37ms 69ms 15.19 Mbps 10.66 Mbps
04 40ms 76ms 14.74 Mbps 17.63 Mbps
05 37ms 70ms 14.93 Mbps 17.06 Mbps
06 37ms 68ms 15.51 Mbps 18.98 Mbps
07 35ms 69ms 15.35 Mbps 16.04 Mbps
08 35ms 71ms 19.83 Mbps 16.88 Mbps
09 39ms 71ms 22.44 Mbps 15.27 Mbps
10 34ms 72ms 16.92 Mbps 15.15 Mbps
Test 4: Speedtest.net BT File Transfer - ATP Grey 64Gb (ICS 4.0.3)
Computerroom
50 cm (1.5 feet) away from Router on table.
First 5 runs of speedtest.net without BT activated.
01 69ms 21.59 Mbps
02 67ms 25.35 Mbps
03 67ms 24.81 Mbps
04 67ms 24.12 Mbps
05 68ms 24.56 Mbps
BT activated, transfering 11.45 Mb MP3-file to my HTC Wildfire (Buzz)
01 74ms 14.67 Mbps
02 70ms 15.14 Mbps
03 74ms 17.21 Mbps
04 68ms 13.28 Mbps
05 70ms 14.07 Mbps
06 69ms 16.97 Mbps
07 67ms 15.98 Mbps
08 70ms 24.76 Mbps! (File transfere completed)
*************************************************************
GPS
Indoors my TP finds occasionally 2 sats but no fix, most of the time it finds nothing.
My SGT 10.1v on the other hand finds almost instantly 10+ sats and 7-10 fixes.
Outdoors my TFP finds within 1-2 minutes or so 10-13 sats and 7-10 fixes.

WiFi speed experiment

There have been quite a few threads on Prime's WiFi speed. However, I believe no-one has done a test, results of which I show below. I wanted to compare WiFi speed of the Prime and my Dell laptop. Speedtest.net measures internet speed, which is bound to fluctuate as server load and access time change. So, I decided to measure things locally. The methodology is as follows.
First, I created five text files with randomly generated ASCII characters. Each of these files was 50 Mb (52428800 bytes) in size. Then, I placed them on a local HTTP server. Since I don't have any program/app both on Windows/Android to precisely measure download time/speed, I used a simplified approach, consistent on both devices. I opened Chrome browser and measured how long it takes to download each file using a stopwatch. I did not ask Chrome to "save as" file, as it can start pre-loading the file before I confirm. I created a simple web page with links to all five files and clicked them one by one, waiting until entire file was open in the window. I simply watched the indicator in the tab, until it stopped spinning. By using five separate files I avoided problems with caching. In order to rule out any trend in our local server speed, I alternated the files, downloading the first file to the Dell and then to the Prime, then the second file and so on.
This is not the most accurate method, but sufficient enough for this purpose. I repeated the experiment five times, so I could estimate measurement errors. The results (download time, in seconds) are presented below:
Dell Latitude E6500 with Windows 7, 4 GB RAM
Transformer Prime, S/N C10KAS######, build .14
Dell Prime
----------
39.4 101.0
37.1 102.4
40.8 101.7
38.7 102.8
38.9 100.0
which converted into speeds (Mbytes / s) gives:
Dell Prime
----------
1.27 0.495
1.35 0.488
1.23 0.492
1.29 0.486
1.26 0.500
As you can see, there is not much variability in either sample, and the mean speed (with standard error) is 1.28(0.02) and 0.492(0.002) Mbytes per second, for Dell and Prime, respectively. Ergo, the Dell is about 2.6 times faster downloading (large) files than the Prime.
I leave the reason for this rather huge difference open to discussion. Is it the WiFi adapter in the Prime? Is it processor speed? Memory? Storage? I don't know. The fact is that download speeds on my Prime are much slower than on my Dell.
I haven't done experiment like this before .14 upgrade, so I have no idea how it looked like before.
Edit: In the follow-up to the discussion below I have done internet speed tests. This is all done on a fast university network, which shows speeds of up to 500 Mbps, when measured from a wired desktop. The result is interesting: both laptop and the Prime show similar speeds of about 2.3 Mbytes/s. This is much faster than local download speed. I can only guess that speedtest.net is streaming data and counting arriving packets, so it measures the actual WiFi speed. My download test involved opening the file in the browser, which requires lots of memory and some processing. Perhaps processing data in the browser takes a lot of time, hence the difference.
What about distance from the router?
What distances were these done at. What about varying the distance?
The Prime is known to have the Achilles heel of quickly dropping off throughput when you distance yourself from the router. I would be curious a) What distance these tests were done at, and b) to see what they are like at even further (or perhaps closer as well) distances.
No doubt about it though; the numbers you are getting from your Prime are not too swift. Question. Are you affected by any usability issues, such as buffering etc., when streaming video? How is overall performance?
SmartAs$Phone said:
What distances were these done at. What about varying the distance?
Click to expand...
Click to collapse
Both devices were sitting on the desk next to each other. The distance to the nearest router is about 3 meters. The router is on the ceiling with nothing in the line of site.
SmartAs$Phone said:
No doubt about it though; the numbers you are getting from your Prime are not too swift. Question. Are you affected by any usability issues, such as buffering etc., when streaming video? How is overall performance?
Click to expand...
Click to collapse
I don't have any particular usability issues. The tablet feels positively quick and responsive when using the interface, playing games and so on. However, web browsing is rather sluggish in compare with the Dell. Web pages that open almost instantaneously on the Dell can take quite a few seconds on the Prime. On the other hand, I can stream video clips, for example from BBC news, with no problems.
What kind of ping times to the router from each of the devices?
barryflanagan said:
What kind of ping times to the router from each of the devices?
Click to expand...
Click to collapse
Good question. I get about 2 ms on the Dell and about 8 ms from the Prime, to the local server. But these results are quite variable and I haven't done proper statistical processing.
You should specify the WNIC in laptop, rather than the laptop itself.
You're testing for the optimal case (close-range, no obstruction). A test of 10+ meters, ie one or two rooms away, with some obstructions, would be more representative. Rather than finding that the laptop performs better than the Prime, which is pretty much a given, it would be more informative to see how the Prime does with respect to distance & obstruction.
Since speed bottleneck typically involves video content (streaming) or large file transfer, it would be more accurate to larger non-compressible files for transfer, or streaming. A good test would be to stream 1080p, and gradually stretching the distance until drop-offs are noticed.
e.mote said:
You should specify the WNIC in laptop, rather than the laptop itself.
Click to expand...
Click to collapse
I'm not sure. Device manager says "Intel WiFi Link 5100 AGN".
e.mote said:
Since speed bottleneck typically involves video content (streaming) or large file transfer, it would be more accurate to larger non-compressible files for transfer, or streaming. A good test would be to stream 1080p, and gradually stretching the distance until drop-offs are noticed.
Click to expand...
Click to collapse
I'm not sure how to measure streaming speed (apart from spotting drop-offs, but that's subjective). I picked a simple method to measure file transfer speed on both machines under optimal conditions.
The 5100 is an older draft-N dual-band unit with a 1x2 (1 xmit, 2 rcv) arrangement, supposedly capable of 300Mb/s. Most laptop wifi are 1x2 or 2x2, with a few 3x3. In constrast, most mobiles are 1x1, with smaller antennas. So it's a given that laptops will have better wifi reception. You don't need to test for that. Test for something you don't already know about.
e.mote said:
The 5100 is an older draft-N dual-band unit with a 1x2 (1 xmit, 2 rcv) arrangement, supposedly capable of 300Mb/s. Most laptop wifi are 1x2 or 2x2, with a few 3x3. In constrast, most mobiles are 1x1, with smaller antennas. So it's a given that laptops will have better wifi reception. You don't need to test for that. Test for something you don't already know about.
Click to expand...
Click to collapse
I don't know what "1 xmit, 2rcv" is and how it affects transfer speed. If by "reception" you mean received signal strength, this is not an issue as I am sitting very close to the router and have a very strong signal both on the Prime and the laptop. And yet the tablet is much slower in file transfers.
Are you suggesting this is due to less capable WiFi component (antenna, adapter, whatever it is)?
1x2 = one antenna is used to transmit, and two to receive; it means max 150 Mb/s uplink and 300 Mb/s downlink (downlink speed matters more, as you'd expect). These are theoretical speeds, and real throughput is substantially less.
Antennas in mobile devices are smaller and less robust than those in laptops, and there usually is only one for wifi (hence 1x1), whereas in laptops you have two ants. Mobile devices also use SDIO interface that reportedly limits speed to 30-40 Mb/s.
I'm saying that wifi in mobile devices (phones, tablets) is inherently limited, and can't be expected to perform on par with laptops. Comparison against other mobiles, or against itself with varying distance, would be more fruitful.
In any case, it's an academic exercise, since you can't change out for a different antenna or wifi module. There was talk of the Prime being able to run Ethernet USB adapters, and I had asked for some to try out wifi USB adapters, but none responded. I take that to mean USB wifi isn't currently operable w/o a custom kernel.
I recently had 2 primes. They both showed equal signal strenght with wifi analyzer but speedtest.net shows 1 getting half the speed as the other. I returned that one even though it had a 90% working gps (was still off by 30+ ft and didnt track me well during turn by turn).
For sure its hardware (maybe pogo pins not making good contact or bad PCB) since I updated both to ICS .14 and it didn't affect speedtest results.
I have no server, but performed a very similar test.
I used WiFi File explorer PRO to transfer a large file from my computer. To do this I connected my laptop to the router with cable. I placed the Prime close to the router, something like half a meter. Result:
File size 726581248 bytes, time 298 seconds.
If I calculate well this means 19000 kbps or 2.325 MB/s. Not bad...
I was testing this exact method two nights ago. I'll do it again and post the results. I'll have three devices... evo4g, evo3d and my prime at a distance of about 30 feet. I'll even throw in laptop speed just for fun.
Sent from my Transformer Prime TF201 using Xparent Blue Tapatalk
I realize that you wanted to test your wireless speed, not your internet connection speed. The results you got on the Prime translate to roughly 4-5 Mbps.
Do you have a fast intenet connection (Cable Modem) that's capable of, say, 10+ Mbps?
What kind of speeds do you see on the Prime at speedtest.net? Assuming that your internet connection is not a bottleneck, I'd expect that you'll see something similar to your simple wireless tests. I'm particularly curious if you see significantly higher speeds at Speedtest. This wouldn't jive well with your wireless tests.
My speedtest.net results tops around 11000 kbps after running it several times. Unfortunately only in the same room with the router. This is OK since this is the maximum of my net.
ok here are my tests. I will start with my Asus G73jh laptop..
My Evo3D
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My Evo4G
TFP C20KAS
Here is TFP right at the router, about 1.5 feet away
Like I said before, this is 30 feet away through a wall and a LCD tv. I have no problems with WiFi. I think I have a newer model, not sure.
e.mote said:
1x2 = one antenna is used to transmit, and two to receive; it means max 150 Mb/s uplink and 300 Mb/s downlink (downlink speed matters more, as you'd expect). These are theoretical speeds, and real throughput is substantially less.
Antennas in mobile devices are smaller and less robust than those in laptops, and there usually is only one for wifi (hence 1x1), whereas in laptops you have two ants. Mobile devices also use SDIO interface that reportedly limits speed to 30-40 Mb/s.
I'm saying that wifi in mobile devices (phones, tablets) is inherently limited, and can't be expected to perform on par with laptops. Comparison against other mobiles, or against itself with varying distance, would be more fruitful.
In any case, it's an academic exercise, since you can't change out for a different antenna or wifi module. There was talk of the Prime being able to run Ethernet USB adapters, and I had asked for some to try out wifi USB adapters, but none responded. I take that to mean USB wifi isn't currently operable w/o a custom kernel.
Click to expand...
Click to collapse
Well, I suppose it's more or less still messing with the kernel... But WiFi adapters have been made to work with the Prime.
http://forum.xda-developers.com/showthread.php?t=1484339
This is getting weird. As I mentioned in the original post, I intended to measure WiFi transfer speed, not internet speed. But since I have done it on a fast network at my work (university), I thought I might give an internet test a try.
Speedtest.net app shows speeds around 17-19 Mbps, which is about 2.3 Mbytes per second. This is over 4 times faster than my local download speed. This is rather unexpected, and unless speedtest.net is lying, there is an issue with our local transfers.
I believe speedtest.net streams down some data and measures it as it arrives. Perhaps streaming is done in a different way than downloading a big file? Or perhaps downloading requires further processing - storing in local storage, which might slow things down. I have just realized that I was actually opening a 50-Mb web page in the browser. This might be the real reason for much slower speeds of the tablet. I guess I would have to done the test differently, downloading a file directly into storage, though this would still be slowed down by the lack of processing power.
I have edited the original post to include these comments.
PS: At work, my wireless laptop shows a very stable 20 Mbps, and my desktop, which is wired, shows speeds varying widely from 50 to 500 Mbps.
PS2: I tried speedtest.net on the tablet again, standing directly under the WiFi repeater. This gives speeds almost 20 Mbps. I think our WiFi network is limited to 20 Mbps.
@ Felisek
You may try with WiFi File Explorer PRO. It seems there is a bottleneck somewhere in your test environment. This is just an idea.

Anyone else having WIFI problems?

On my laptop I get 30 ms ping times and 20 mbps speed. My View sitting right next to the laptop gets 300 ms ping times and 6 mbps download.
In other words, it sucks.
Any ideas?
Huh.
Tried forgetting my wifi connection and reconnecting. This seemed to help quite a bit. Ping time dropped way down to 52 and speed increased to 11 mbps.

Observed/Timed Download Speeds

I read most of the posts here; but, seldom post. I wanted to determine how badly my WiFi drops off, if it in fact does. What follows is the result of my unscientific testing.
My Prime is serial BCOKASxxxxx.
I have a Linksys E4200 Wireless unit on the second floor of my wood framed house in Anchorage, Alaska.
With the prime approximately 4 feet from the router, I downloaded a 37Mb PDF two times and timed the process. One took 43 seconds, the the second took 41 seconds. I quickly went out of the house onto the edge of the street approximately 50 feet from the router and downloaded the same file two more times (from the same server). This time, the downloads took 124 seconds and 132 seconds. Browser used was Dolphin.
That seems to be a significant difference; but, I don't know what the numbers really mean.
I next repeated the test with my Dell XPS Laptop running the latest FireFox with a download accelerator running and obtained 19 seconds, and 23 seconds.
Out to the street (exact same location), and the times were 27 seconds and 32 seconds.
I did some math, and determined that the Prime took 3 times longer to download the same file at 50 feet from the router, than it did at 4 feet.
The Dell took 1.4 times as long.
Of course, there are variables (different browsers and a download accelerator); still, that seems to verify (at least to me) that the WiFi in the Prime is somewhat weaker than other devices (based on only a sample of one).
Jerry in Anchorage
I have a c2oka series prime. Made a comparison downloading a 37 MB file from my providers website (mysql.netvisao.pt) about 10 mts away from my belkin 600 router with my sgs2 and my prime, using Dolphin HD in both cases. The results were very clear! The prime took 1 min 25 secs to complete the download while the sgs2 did the same job in 40 seconds.
There is no doubt that something is very wrong with Prime's wifi.
1) this is a known issue, you could have posted this in the "known issues with prime" thread on the main page
2) time of download is irrelevant for this, why not just use the speedtest app that tells you how much bandwith you are getting in Mb/s? Test it at different distances 3x each distance, average the #s you have a good idea of exactly how much Mb/s bandwidth you lose/foot or w/e you want to do with the math.

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