why am I only getting 580kb/sec on my ftp transfers? I'm using mocha ftp server and on the pc I'm using Flashfxp...have I reached the microSD speed limit? Also, opera only gets around the same speed when using dsl reports with wifi.. pocket ie gets like 1400-1500kb.. and I've already messed with the wifi power settings..can someone help
I'd also like to add that when I use the usb connection and disable wifi I'm still able to ftp using active sync's IP...and still get around 500 BOTH ways.. I could swear that when I had a microSD card reader that I could xfer quicker, so I'm leaning against a read/write speed problem...
http://forum.xda-developers.com/showthread.php?t=333310
seems not all ftp clients are created equal
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.
How to Transfer Data from Nexus 4 in a fast way ? ?
I'm facing problem with transferring data from my nexus 4 as its full..
By connecting to USB it detects as portable device and data transfer speed is so slow rate.
I tried to download through Airdroid app n it takes more time too.
So is there any faster n safer way to transfer data from nexus 4 or any other good app which supports me for this in fixing issue..
Would be helpful n appreciate help !!
Use WiFi Direct if supported by your PC.
You can use es file manager and share a folder on your computer and share through Wi-Fi but will probably be like air droid
Sent from my Nexus 4 using Tapatalk
The easiest application to use for copying through Wi-Fi is through these applications :
*superbeam
*Wi-Fi file explorer
*Wi-Fi file transfer
Unleashed by my Nexus 4
Xender appears to be included in the marshmallow stock rom....after playing with it a bit and using it to transfer some TWRP backups from my phone to my pc it appears to work really well. Was curious what results others were getting?
I uninstalled it as I use OTG to get things on and off my phone to my pc. I think I might give it a shot if it's faster.
Xender works ok, I've been using AirDroid for a while with no issues, simple to use.
Works great for me. I can easily transfer files from my Chromebook and tablet. Fast speeds for me as well.
I am trying to copy files through LAN using ES file explorer and it is painfully slow.
That said, my wifi appear to be fast enough (I get 54Mbps up/down which means, it should write at few MB/s)
Does not matter whether I am writing to the internal storage or external storage.
Not just ES file explorer, midnight commander also is having an issue.
I am wondering whether Nougat upgrade breaks SMB access/stack for some reason.
Can someone confirm/verify?
Just checked and downloads from my cloud account is not affected so it isn't my SD card speed issue nor the wifi issue (I get solid 3.5MB/sec download from cloud).
Just tried to copy the same file on my windows tablet and I can do solid 7-8MB/sec transfer so it isn't the source speed either.
I just can't pinpoint what the issue may be. I can swear that the speed was just fine prior to Nougat upgrade.
BTW, when I say "painfully slow", it is like 2-300KB/s speed.
I just read that same thing was happening with Galaxy Note 7 as well. Very slow access to SMB/CIFS.
I enabled FTP access to my NAS and it is now transferring at around 9MB/sec.
I wonder why the SMB/CIFS access is slow.