Database Users

Speed issues with tethered 8525

I'm having a tether problem that I'm hoping somebody can help me with. Getting the actual tethering to work is no problem, I've been able to tether via DUN, Bluetooth, PDANet and also with Internet Sharing on the new ROM.
The problem I have is with speed. I'm in an HSDPA area and am getting HSDPA data (this is definate). Tethering using any of the above methods to my XP Pro PC with a USB cable (USB 2.0 ports) gives me a peak speed of roughly 600kbps - like clockwork (Bluetooth, of course, is slower.) For the longest time I believe the problem was something with the phone but then when I connected my phone to another PC I got the speed I expected (1 - 1.1 Mbps) consistently. That guys phone also get similar speeds on his PC. Connect his phone to my PC and the speeds go to 600 kbps.
I've updated every driver and piece of software that I can think of but I can not get the problem fixed. I'm pulling out my hair (and don't have alot to spare anymore.)
Any ideas???
Bob

Anybody have any ideas? This is driving me nuts. I hate to have to go get an aircard when I know that this can work.
On a side note, I borrowed an AirCard and got as high as 1800 on the download (3 blocks from the tower . . . ) which was cool.
Thanks!

Fixed - needed to increase the RWIN value (per dslreports.com). See http://www.howardforums.com/showthread.php?t=1116230
Thanks,

Unbelievable! works like a charm!

Low speed wifi - HTC HD

I have a wireless router(Asus WL-600G) in my room that support:
802.11g:6,9,12,18,24,36,48,54 Mbps
802.11b:1,2,5.5,11 Mbps
My PC connected to this router with wired lan and ofcource my HTC-HD connected to this router with wireless connection.
But in my phone's wireless LAN setting, in the box of Tx-Rate shows 54Mbps and in the box of Rx-Rate shows 1 Mbps(usually)(some times shows 54Mbps and then change to 1Mbps)
ofcource, I set power save mode to Best Performance.
When I use Resco File Explorer to transfer my files like .avi files, from my pc to my phone, my speed is up to 300KByte/s and it taking too long time, transfering my files.
And I can't watch my movies directly from my local Lan and continiusly my movie player(Core Player) buffering when i want to watch my movie so i can't use it to watch my movies directly from my LAN.
My question is, why my phone's rx-rate is 1Mbps when I have a router that support up to 54Mbps and why my transfer speed is up to 300Kbyte/s
Note: my devices are not so far(1 meter), and my signal progress bar is about 80%, although my Laptop in the same distance has VERY GOOD signal.

Have you tried the following http://forum.xda-developers.com/showthread.php?t=471910

i checked it, don't have any effect on my device !!!

have you tried changing the power settings to better perfomance??

zuadao said:
have you tried changing the power settings to better perfomance??
Click to expand...
Click to collapse
As i wrote before, I set power save mode to Best Performance !!!

In the thread to "make the wifi faster", they got a "wonderfull" speed up to 1900kbps... kiloBITS per seconds ! As kiloBYTES (the only interesting measure) it's an incredible ~240kB/s. It's just BAD for this kind of connection...
The WiFi on HTC devices is just there to be on the description of the device, cause it's just slower than a good HSDPA (around 4Mb/s or 500kB/s).
I can confirm I only got around 300kB/s using my G router. It's just not useable (you can expect a minimum of 1MB/s for a WiFi G and a max of 700kB/s for a B).

lpaso said:
In the thread to "make the wifi faster", they got a "wonderfull" speed up to 1900kbps... kiloBITS per seconds ! As kiloBYTES (the only interesting measure) it's an incredible ~240kB/s. It's just BAD for this kind of connection...
The WiFi on HTC devices is just there to be on the description of the device, cause it's just slower than a good HSDPA (around 4Mb/s or 500kB/s).
I can confirm I only got around 300kB/s using my G router. It's just not useable (you can expect a minimum of 1MB/s for a WiFi G and a max of 700kB/s for a B).
Click to expand...
Click to collapse
Thx Ipaso
I want to know in this device we don't have a real speed wifi !!? or all other pda like omnio, Xpersia and iphone have same wifi speed
And with 200 kByte/s i can't see my movies from my LAN? because Core player continiusly buffering
It is important for me, I can watch my movies with my HTC-HD device
do u know any other solution to watch my movies directly from my LAN without pouse ?

dr1361teh said:
Thx Ipaso
I want to know in this device we don't have a real speed wifi !!? or all other pda like omnio, Xpersia and iphone have same wifi speed
And with 200 kByte/s i can't see my movies from my LAN? because Core player continiusly buffering
It is important for me, I can watch my movies with my HTC-HD device
do u know any other solution to watch my movies directly from my LAN without pouse ?
Click to expand...
Click to collapse
I totally understand your problem, cause I'm trying to do the exact same thing (transfert avi and watching vids on my phone from my server using WiFi).

Yes - have exactly the same problem!!!
Router G mode, wifi G patch on HD, and speed about 200-300kB

I have the same speed problem with my home router ASUS WL-500w + sometimes it keeps disconnecting and connecting every 2 seconds.
I tried different WIFI router (Huawei) and it seems to work fine.
Tx-Rate shows 54Mbps and Rx-Rate shows 54 Mbps too.
+ with this router it was working on really long distance.
So i think the problem is in my ASUS router.
Today I'll try to use alternative firmware in my ASUS router. Maybe it will help.

Tried with 3 different radio roms, and with each ones, never more than ~300kByte/s... We don't even need WiFi G for this speed !

I wonder... is it because the device is defaulting to 802.11b instead of 802.11g?
one test could be to set your router to ONLY 802.11g......

[Q] USB tethering

Is there a way I can USB tether my tablet to my phone? I believe 3.1 has USB host support, so if I got the USB adapter for my tablet would it be able to use it for internet? I don't want to buy the adapter before knowing if it's going to work.
The reason I'm asking is that I've always used USB tethering on my Evo 4G when tethering to my laptop, and I get great speeds. However, I tried wifi tethering for the first time today with my Galaxy Tab and found that download speeds won't go above 250 kilobits/sec, while upload speeds are 1.2Mbit/sec. From my phone the speedtest still shows 6-7Mbit/sec download speeds, which is the same that I get over USB tethering. Wifi tethered download speeds are also this slow when using my laptop. I tried disabling encryption and disabling CPU scaling (ie set min and max freq at 1Ghz) in case the phone was CPU bound, but it had no effect. The actual load on the phone was minimal during a wifi tethered speed test (3% usage). So there must be something wrong with wifi tethering on my phone.

Ingenium13 said:
Is there a way I can USB tether my tablet to my phone? I believe 3.1 has USB host support, so if I got the USB adapter for my tablet would it be able to use it for internet? I don't want to buy the adapter before knowing if it's going to work.
The reason I'm asking is that I've always used USB tethering on my Evo 4G when tethering to my laptop, and I get great speeds. However, I tried wifi tethering for the first time today with my Galaxy Tab and found that download speeds won't go above 250 kilobits/sec, while upload speeds are 1.2Mbit/sec. From my phone the speedtest still shows 6-7Mbit/sec download speeds, which is the same that I get over USB tethering. Wifi tethered download speeds are also this slow when using my laptop. I tried disabling encryption and disabling CPU scaling (ie set min and max freq at 1Ghz) in case the phone was CPU bound, but it had no effect. The actual load on the phone was minimal during a wifi tethered speed test (3% usage). So there must be something wrong with wifi tethering on my phone.
Click to expand...
Click to collapse
<<would also like to connect tab to evo using tether ( my tablet sees it and displays "connected" but nothing loads in a browser.

[email protected] said:
<<would also like to connect tab to evo using tether ( my tablet sees it and displays "connected" but nothing loads in a browser.
Click to expand...
Click to collapse
Hmm, I wonder if logcat and/or dmesg have any useful info. It could be an issue of the usb networking driver not being present, or it could be something simple like the tablet not using dhcp to ask for an IP or DNS server.

[Q] What's the connection speed with your WiFi N router?

Hi,
I recently got myself a new Type N WiFi router. On my old B/G Wifi router my SGS connected with 54MBit/s as it is supposed to do.
I was expecting to see a connection speed of 300MBit/s now (I'm not talking about the effective transfer rate, just the connection speed) but instead my SGS connects with very variable speeds to the router but never exceeding 65MBit/s.
Is this normal or do I have to do some specific settings in the phone or in the router?

my notebook computer connected at 300Mb/s while my SGS is at 72Mbps. HD(720p) playback through network is smooth.

its normal, sgs has only one antenna, look it up, for 300 Mbit u need 3 antenna.
Sent from my GT-I9000 using XDA App

no matter what kernel or rom i have on my i9000 I am getting on my N router maximum of 6-7Mbits (using wifi file explorer)

s3icc0 said:
no matter what kernel or rom i have on my i9000 I am getting on my N router maximum of 6-7Mbits (using wifi file explorer)
Click to expand...
Click to collapse
You are talking about the transfer rate, I asked instead about the connection speed. You might be able to see this logging into your router. Your slow transfer speed probably depends of the fact that you are connected with your PC through Wi-Fi too. Connect the PC by cable and your transfer speed will at least double.
Sent from my GT-I9000 using XDA App

my all-time maximum is 72Mbps
and its not even effective
when transferring files it uses about half of that speed
720p is indeed smooth

WiFi speeds

Is it just me or are WiFi speeds on these tablets very slow? If anyone know Of a fix it would be appreciated.
Sent from my Nexus 7 using xda premium

I've seen other posts where people have found a small gap in the shell resulting in poor contact inside for the wifi leads. Some were able to squeeze the shell tighter to help and some opened the back and tried to carefully adjust the pins to make better contact. At least one person broke a contact pin, so be careful if you try that. My wi-fi connection and speeds are very good.

I can download a 100 Mb file in less than a minute, and web pages take less that 3 second to load.
Though, I have a 30 Mb/s connection from Charter that I can constantly get up to 45 for some reason.

Last night I transferred GBytes of data via ADB (i did a full tablet wipe and a bunch of restores) and couldn't help but notice that sustained data transfer via (wired) ADB is only about 1.4 Mbytes/sec. Sort of pathetic waiting around for a half-hour to transfer a 2.5 GB file.
Anyway, not to jack the OP (which is about WiFi), but I wanted to try and figure out what my best options are for high-speed backup (I have a 32 GB N7!) - including WiFi as an option.
Ran a couple of file transfer trials this morning using a ROM file that was 150,137,068 bytes.
Results first, more detail on each setup follows. (The results are compared in terms of data payload per second; in the cases where protocol overhead is high, the wire-speeds would be higher than calculated)
[1] SMB/CIFS write via WiFi : 518sec => 2.32 Mbits/sec. UGH (best of three trials)
[2] FTP put via WiFi : 109sec => 11.06 Mbits/sec
[3] FTP get via WiFi : 121sec => 9.9 Mbits/sec
[4] adb pull via USB : 78sec => 15.4 Mbits/sec
[5] adb push via USB : 117sec => 10.3 Mbits/sec
[6]* OTG VFAT write via USB: 33sec => 36.4 Mbits/sec
[7]* MTP copy via USB 13sec => 92.4 Mbits/sec
In the WiFi cases:
- Linksys WRT54G (802.11g) router circa 2006 [ 802.11g theoretical bw 54 Mbps ] 6' away -35 dBm signal
- SMB/CIFS "server" Windows Xp SP3 laptop on 100 Mbps Ethernet segment attached to router
- N7 SMB client app ES File Manager
- FTP Server app (Andreas Liebig) on N7
- FTP client app Windows Xp default ftp app for both push and pull
- Windows box on Ethernet, N7 only on WiFi.
In the OTG case:
- 8 GB Sandisk Class 2 microSD card on a card reader attached to OTG cable; single partition, empty card, VFAT formatting.
In the ADB case:
- adb v 1.0.31, Win 7 Pro x64, Quad-Core i5, USB 2.0
Observing the WinXp task manager performance tab during CIFS or FTP transfers, the wired (Ethernet) link would show a high degree of variability, oscillating between 5 Mbps to 15 Mbps instantaneous rates. Hard to say whether this is a router performance issue or something else (11 Mbits/sec approaches 1000 pkts/sec at a MTU of 1500 bytes).
* The numbers for the OTG and MTP transfer tests are possibly questionable as the role of file caching is unknown - the times given here are only the times that the file transfer dialog(s) remain on-screen. (The writes could be completing in the background out of cache with nothing showing on the screen) In particular, note that the OTG copy involved a "Class 2" microSD card - and yet the write speed seemed closer to 4.5 Mbytes/sec, rather than 2 Mbytes/sec
The SMB/CIFS transfer times are quite pathetic; but as with all performance measurements, any participant in the test could be the long pole in the tent. For instance, the issue might be the ES File Manager app. I did not test with a N7 CIFS-capable kernel.
Also, it would also appear that performance of ADB for file transfers are quite poor - well, in comparison to MTP anyway. Too bad MTP doesn't preserve file timestamps (as well as all sorts of other oddities).
Apologies in advance for using file transfer as a network benchmarking method - my connection to the outside world (DSL) peaks at only 3.8 Mbits/second, so I would need to set up some kind of LAN server to benchmark network performance in absence of flash-memory or hard-drive writes.
Anybody have any performance numbers to share for:
- OTG mounts of hard drives or SSD devices with NTFS or ext4 file systems
- CIFS/SMB network mounts with CIFS-capable kernels
- WiFi speed tests when remote server is via FiOS or U-Verse fiber connection?
========================================================================
[Edit] -- Added some network-only test results.
FWIW, I ran a couple of tests using the "netcat" tool to evaluate the same setup without writing files to mass storage devices. It turned out that a terminal emulator app that I have has a busybox with netcat built in, so I booted the WinXp laptop into a Ubuntu Live CD (10.04LTS), and ran netcat TCP write tests in both directions. I also used "iptraf" to look at peak bit rates.
Result? Peak observed speeds were about 16.6 Mbits/second, and sustained-average results were in the 11-12 Mbit/second range. From that I conclude that that the FTP transfer tests were probably network-limited, as testing involving file writes were really no slower than this. Whether that means the "N7 is WiFi limited" or something else is not deducible from the data I collected. In this case, it takes three to tango (N7 - router - laptop).
I do note however that blahman179 said above "100 MB in less than a minute" - 100 MB in 60 seconds is about 14 Mbits/second. Only a little faster than what I observed - right in the same neighborhood.
Note that I had my WiFi router set to G-only. I suppose that the basic bit rate with huge signals in the -30 dBm range means that the radios are indeed transferring packets at a 54 Mbit/sec bit rate - but with a duty factor of less than 30%.

@OP:
fwiw, I did a little searching. Some XDA N7 users with high speed ISP connections report peak download rates of 20-30 Mbps when connected to networks that can do much better than this using PCs.
That "speedtest.net" app reports peak values recorded over short intervals - I suppose that sustained (average) transfer rates are somewhat worse than this.

bftb0 said:
@OP:
fwiw, I did a little searching. Some XDA N7 users with high speed ISP connections report peak download rates of 20-30 Mbps when connected to networks that can do much better than this using PCs.
That "speedtest.net" app reports peak values recorded over short intervals - I suppose that sustained (average) transfer rates are somewhat worse than this.
Click to expand...
Click to collapse
Also Comcast and probably others boost your speed for the first part of your download making burst speeds optimistic.
Sent from my SCH-I605 using xda premium

I have 60 megabit, ive not sat and worked it out, but I often get speeds of 5500kb/s on torrents over wifi. Maybe not making use of all my bandwidth, but the downloads come in quick enough for me.
Sent from my Nexus 7 using Tapatalk HD

Having trouble with all wifi connections on my nexus 7... When i am on my home wifi I get 5mbps where all other g connected devices pull 25mbps. That's not so much of a problem. When I am tethered to my cellphone via wifi I get 600kbps with the nexus 7, but my cellphone tethered via wifi to my pc is 4mbps. I'm concluding something is wrong with the link speed on my nexus 7 but don't know what to do about it. Any help would be appreciated cause I really need more then 600kbps when not at home, especially when my phone regularly pulls 10mbps in my area.

I agree with the WiFi connection being slow with the n7.IMho I've seen better download speeds with my galaxy tab 2. I've also noticed with certain kernels the WiFi is faster.stock to me is the best and now I'm running the faux kernel and it ain't too bad.

I just tried the speedtest.net app and averaged about 9.4Mbs down and .68 up. Stock rom, rooted JB.