File transfer on LAN

hie...i made a program for file transfer.But i need to check the CPU usage and its advantage over normal file sharing and transfer on windows XP.Plz.. help me
if someone wrk on this and better if i have some another algo to do the same(file transfer)

This is not network question. Go to JNI forum and ask how to find CPU usage.
In two words - there is no way without native API.

Similar Messages

Skyp file transfer on LAN slow for windows and Mac...

Hi,
We are extensively use skype and since we upgrade skype to 6.18 and above ... file transfer on LAN is super slow... to transfer file 200MB it took over 15 minutes but when i'm skype 6.16 it took about 45 seconds... can anyone lemme know to fix it or tweak it on both Mac and windows so i can speed up file transfer on LAN....

I've been experiencing the same issue. I keep having to downgrade to 6.16 and cancel automatic updates for this same reason. It's really frustrating as my work involves sendig and receiving files via Skype. Versions 6.18 and up not only are too slow (a large file, for example, that would normally take 18 hours or less to transfer takes 1 week! on 6.18 and higher) but also slow down my whole connection while surfing. 6.16 allows me to transfer at a fast speed and I can watch videos and have a 256k livestream radio going, be on a skype call and still have enough speed to download from the Internet without slowing anything down. This is completely unacceptable. I see that no one has replied to this and nothing has been done to fix this issue. I wonder if Skype even browses through these.

New to MacBook - slow LAN file transfer problem

My new MacBook is painfully slow when wifi-ing to my house LAN.
I turned in my old G4 iBook for a MacBook (2GHz C2D, 2GB, 10.4.9, all updates). I have a LAN that consists of a wired 1G Ethernet backbone (a Mini and a Powermac G5 are wired in) and a Snow AEB that provides 802.11g wifi access to the LAN. The wired LAN connects to a D-Link GB Ethernet switch so the wired systems can exchange files fast. The switch connects to a D-Link EBR2310 router that connects to a cable modem to ComCast. The router has the latest firmware (1.05, it's an 'A' version router).
The Mini, G5, and MB are static IPs on the LAN. The D-Link router passes out DHCP addresses >100, with addresses <101 reserved for static LAN IPs. I use static IPs for network reliability when recovering from power outages and other unforeseen glitches. The LAN has worked very well in this configuration, with fast file transfers among machines and good stability.
With my old 802.11g G4 iBook, I was able to watch DVDs that are stored on an external FW drive connected to the Mini. No stalls, no pauses, no dropouts - MenuMeters showed an average throughput of about 700KBytes/sec on the iBook when viewing a DVD. I used both VLC and DVD Player with good results.
With my new MacBook, I can't view my DVD files. 802.11g network transfer rates to the MB (indicated by MenuMeters and by Activity Monitor) vary rapidly from a high of about 1.1 MBytes/sec to 20 KBytes/sec. Movies stall, skip, etc.
Simple file copies from one system to another are also much slower with the MacBook - an average of ~100KBytes/sec vs. ~ 1.5 MBytes/sec with my old iBook. In short, the MacBook is dog-slow in file transfers from the other machines compared with my old iBook when using the wifi connection, with no change to the network infrastructure in going from the old laptop to the new. I would like to fix this.
My AEB is set up in bridge mode (simple access point) with WPA2 security. All three Macs are completely current with latest updates, as is the Snow AEB. The MB has 4 bars of signal strength. Slow file transfer problem does not change when moving the MB to or from the AEB.
Curiously, when I download a large file (like the Intel 10.4.9 combo update), the MB shows a steady ~800KBytes/sec download speed, with none of the speed variation it shows with file transfers from either the Mini or the G5. File transfers to/from the MB to either of the other Macs are very slow.
Both the Mini and the G5 have Airport cards: when I switch them from wired Ethernet LAN to wifi LAN, they transfer files between each other at ~ 2MBytes/sec - about what you'd expect from an 802.11g protocol. So the slow file transfer doesn't seem to be due to the AEB, it seems to be specific to the MacBook. When I connect the MB using its hardware Ethernet port, files transfer just as fast as the other systems.
I have tried these measures, without effect on the problem:
- power off/restart of every component in the system;
- changing the AEB to an open network mode;
- changing the MB from static IP to DHCP;
- toggling IPv6 on/off;
- running no applications other than Finder on all systems;
Activity Monitor on the MB doesn't show anything sucking up CPU cycles during file transfers. I have plenty of RAM. The only thing I've changed in the network is the swap of the iBook for the MacBook.
Can anyone suggest what else I can try to make acquisition of this nice shiny MacBook a step forward, rather than a step back? Thank you!
G5 DP 1.8, Mini CD1.83 GHz, MacBook C2D,2GHz Mac OS X (10.4.9)
G5 DP 1.8, Mini 1.83 GHz, G4 iBook Mac OS X (10.4.8)
G5 DP 1.8, Mini 1.83 GHz, G4 iBook Mac OS X (10.4.8)

Hi,
Did you want to use the Live Migrations for that?
We recommend that you configure separate dedicated networks with gigabit or faster speed for live migration traffic and cluster communication, and these networks should be separate from the network used by the management operating system, and from the network
used by the virtual machines.
For more and detail information, please refer to:
http://technet.microsoft.com/en-us/library/ff428137(WS.10).aspx
Regards.
Vivian Wang

4500EA LAN File Transfer Speed

My XBOX started complaining when I began using Windows Media Center to stream videos from my PC to my XBOX. I found out that I had a wireless G router provided by verizon which wasn't fast enough to stream videos. SO, I went out and purchased a 4500EA router expecting it to be the fastest thing I had ever seen.
Now it seems a bit slow when trying to stream video from my laptop to the XBOX and i'm a tad bit confused as to why. So I did a file transfer from a desktop wired directly to the router from a laptop in the same room wirelessly connected to the network and my speed is about 4mbps. 4MBPS!? This device is supposed to be capable of moving packets LAN side at 450MBPS.
Both of my PC's are quad core, newer model PCs. I've tried moving files now for several hours with the same results. I've toyed around with my wireless adapters, changed power settings, full duplex, half, changed mtu sizes, changed security settings. I'm out of ideas.
Is getting about 1% of the advertised bandwidth normal? Or is something wrong?

1. Without knowing the wireless adapters you use it's impossible to say how much you might get under very good circumstances.
2. The advertised 450 Mbit/s is as usual with networking the theoretical boundary which would be possible only under absolutely ideal circumstances not using 802.11. In reality a compatible adapter might get maybe 1/2 of that under very good circumstances.
3. In reality you often won't get a 450 Mbit/s or 300 Mbit/s connection rate (which is only an indicator for the signalling and encoding used) but only a 144 Mbit/s connection at least for the 2.4 GHz band because there is too much interference.
4. Toying around with settings usually makes things only worse, in particular if you don't carefully revert all settings back to the original settings.
5. What connection rate did you get with your desktop? What adapter is in the desktop?

File transfer protocol over LAN

Hello every wizards of this world...i extemely need ur help...plz...can i ask for ur helping hands to give us a running codes for file transfer. on socket programming over LAN(local area network)..we nid this codes for our project...we find hard searching for it on the internet...there are lots of examples but it doesn't work...

FTP

Slow file transfer speed on OS X / Windows LAN

I have a Mac Mini with OS X Server (Yosemite) on a network of 5 Windows 7 PCs, the server hosts FileMaker Server 13 and also some files in a shared folder.
I notice the file transfer speed when copying a file from one PC up to the server's shared folder is around 350KB/second, is this an acceptable speed? how could I improve it?
Thanks for your help.

I'm having the same issues.. I recorded a bunch of video with the 4s.. now i'm copying them to my windows 7 pc with it peaking out at 900KB/sec. My corsair thumb drive in the same port gets 5-10x this speed. any luck getting faster speeds?

Which is the best way to transfer the file through the LAN

I need to transfer files of Size in MB from one PC to another. I have done it by File Copy function with the file path "\\Receiver\C:\File.txt". but it takes 1 Sec approximately for the 10KB of file size. I also need to monitor the file transfer progress. Please suggest the best way to transfer file faster.

Thanks for the Valuable feedback.
Actually the File format I have to tranfer is *.vlf (these file are taken for printing) which is of few MB of size I didnt try to transfer this format file. For the testing purpose I have tried with text files.
Please tell me how to address the destination path (administrative
share of C$ ). I dont know about UNC path.
In my Code:
After transferring files to the destination path (path - which is always accessed by the Printer). I have to send command to the PLC that triggers the printer then printer take these files. After these cycle complete, I replace the files with the File Copy Function then again printer is triggered by the PLC - command. If the PLC command sent after the file transfer sequence, the PLC will immediately triggers the printer to print the file. I have nearly 500ms of time to transfer two of these files.
All i want to know is File Copy function completes its job after transfer or it just commands to do so. I should not give the command to plc while file tranfer in progress.
Also please tell me is it possible to monitor the file being transfered ?
Thanks & Regards
Sridhar

IChat File Transfer/Video Chat won't work... :(

Hi Everyone,
I am trying to get ichat to allow file transfers/video chatting on my Mac, I have a feeling that the setup through the routers that we have are not allowing it to function as it is constantly giving me errors. My set up is a Cable Modem hooked into a Netgear WGR614 v6 and then an ethernet wire running from that router to a Linksys WRT54G v8. I have the WRT54G set up with the following settings:
IP: 192.168.1.136
Subnet: 255.255.255.0
Gateway 192.168.1.1
Static DNS 1 and 2: Are my IP's DNS servers
Static DNS 3 is blank
Local IP address is .199 with a subnet of 255.255.255.128
I have DHCP enabled starting at .200 with 30 users
My computer is also set up statically at port .233.
The Netgear WGR614 v6 is set up with the following settings:
Get IP/DNS dynamically from ISP
DHCP Range from 192.168.1.2 to 192.168.1.51. Router is on a subnet of 255.255.255.0 the linksys is set up statically to the Netgear
SO, this brings me to my issue, I am trying to get ichat file transfer/video to work, I have followed the instructions for setting up portforwarding from portforward.com for ichat on both the netgear and the linksys. On the linksys, i set the IP address to forward to as my computers (.233)
On the netgear, i set the ip address to forward to as 192.168.1.136 (the static IP of the linksys).
Anyway, I am hoping someone can point out what I am doing wrong as I am still getting this error: An AIM error has occurred. Unable to talk directly to your buddy. I am also getting this error: An AIM service error occurred. The server message was: Serv:RequestTimeout.
My OS X firewall is off.
THANK YOU SO MUCH FOR YOUR HELP IN ADVANCE!!

Hi,
I am not sure I have understood your Networking here.
You say the Netgear is getting an IP (Via DHCP) from the ISP.
You go onto say it is at 192.168.1.1
It issues IP addresses from 192.168.1.2 through 192.168.1.51 and the Linksys has an IP outside this range at 192.168.1.136
Your computer is at 192.168.1.233
As both devices are using the 192.168.1.xxx group and doing DHCP (even with restricted groups) how does the computer know which one to connect to ?
You should be able to change the group that each device is using for it's own network (I would suggest the Netgear)
You should also turn Off DHCP (to the LAN) in the Netgear so it's own network (subnet) only goes as far as the Linksys.
Similarly in the Linksys make sure DHCP is Off or change the Mac to use Manually (Static) with DHCP.
Both devices can do UPnP found in the Administration tab in the Linksys and the WAN page of the Netgear.
Turn Off/disable all Port Forwarding in both devices.
It may also pay to copy across the Linksys and Computer the DNS server IPs from the Netgear.
2:47 PM Wednesday; August 29, 2007

Port 548 Shutting Down File Transfer Over Network

OK, nobody laugh, but I am trying to transfer some old work files from an ancient PowerBook 3400 (including many on Zip disks) running OS 8.1 to one of our newer machines so we can look through them at our leisure later and save those of interest.
On the PowerBook, I have successfully connected to both of the new machines (see below) via Chooser and started to copy files to those machines. In the middle of the copy, after a few minutes, I get the following message: 192.168.1.xx:548 "The file server connection has closed down". 192.168.1.xx is the LAN IP address of the receiving machine. Personal File Sharing is allowed, and file permissions have been given to Others in the receiving folder. Do I need to do authorize something on Port 548 to allow the transfer?
Thanks in advance for any suggestions.
Bob

Hi Ralph
I can see where that might be the case, but file transfer worked flawlessly BEFORE I went wireless using the same modem. The only way to unblock ports on my router is to turn NAT off - it creates a DMZ, so it permits unhindered 2-way traffic...
It's a pretty confusing piece of kit. Maybe I should just get a Netgear anyway!
I have a laptop on the wireless network as well, and file transfer works a treat between it and the iMac. All I can think of is that because I'm now working on a LAN, there's a blockage to get out to the "Real World" - even though it's easy for video to pass through.
I'll check my unblocked ports again, just to be sure. I'm unfamilar with the term "Jabber" - is that what Apple decided to call one of the elements of iChat? Excuse my ignorance...!

File Transfer Speeds

I know this topic has already been covered in some of the posts but it was replied that the latest version i.e., 6.20 would solve the bug. Which obviously it failed to do hence this post.
The latest version of skype 6.20 still gives a maximum speed of upto 4Mbps even if the clients are on Gigabit LAN connection. Version 6.18 used to stuck at 1.5 Mbps. Earlier versions (6.9) used to provide full LAN speed via skype.
Secondly, earlier versions of Skype didn't pass on the sounds of programs running on one of the clients but as I tested today, version 6.20 passes client sounds (and I'm not talking about speech) like music etc etc.
Is this really how upgrades are supposed to behave? Or is it poor quality assurance testing before making release public?
Disappointments since MS acquired this brilliant service.

Been having issues with file transfers for a while, didn't find out til I went to post here that Skype is now up to 6.21 (I was on 6.20.x but 'checking for updates' didn't find anything) so I uninstalled, installed fresh, and tried again. Still no good.
Not sure what the aforementioned previous discussions covered, but when sending a file my local connection gets saturated on the upload side. So my connection properties dialog shows my connection uploading faster than my internet can (somewhere around 800KBps, while my net upload is ~100), with everything else net related predictably slowing down. And the file transfer itself slows to a crawl.
Uninstalled the latest/current version of Skype, back to 6.16.0.105 as I read in some other advice, and am currently sending a file at my normal speed without any issue at all.
So if this was supposed to be fixed it most certainly isn't.
Note this isn't an anti-MS rant - I didn't install Skype until MSN/Windows messenger no longer worked. For my needs (IM, file transfer) messenger worked perfectly. Skype has been ok until recently with this issue.

OS X Server Messages Server Jabber Proxy65 File Transfer Solution

Like many others, I'm running OS X 10.9 Server behind NAT, and finding that Messages (aka iChat) which uses Jabber/XMPP is hit-or miss when doing file transfers between LAN and WAN clients.
The solution I found was here: messages server proxy65 behind NAT?
The problem : by default, the proxy65 config (which handles Jabber file transfers) binds to the server's IP address. In a NAT setup, this would be a LAN address. When the file transfer initiates, this LAN address is advertised to the clients, and if they are on the WAN, it's not a routable address.
You might think you could use the WAN IP address instead - but this fails within the proxy65 setup with this error:
twisted.internet.error.CannotListenError: Couldn't listen on 64.XXX.XXX.XXX:7777: [Errno 49] Can't assign requested address.
The solution, as per the post, is to comment out one line in the proxy65.py file and use an actual DNS name in the com.apple.proxy65.plist file.
Although that solution was written for 10.6 this seems to work well for me in 10.9.

FYI, I've submitted this as rdar://19926772

Windows 7 network file transfer absurdly slow

I know there are plenty of other posts about slow network file transfer. Here, elsewhere, I can't say I read them all but most are referring to slow down to 1MB/s.
I am getting <20KB/s.
If I transfer a very small file (less than 100KB) it would start quickly then slow down to <20KB/s. all subsequently network file transfer would be slow, a reboot is needed to reset this. If I transfer a large file it would be stuck on calculating for
a long time and then begin with <20KB/s immediately.
This is a fairly newly built desktop. Realtek gigabit on-board LAN of ASRock Extreme3 gen3. I have tested network file transfer to and from a Windows 7 laptop and a MacBook Pro, so I am fairly certain it is the desktop's problem. The slow speed only happens
with one direction, outbound from the desktop, regardless of whether I initiate the file transfer action from the origin or the destination. Inbound network file transfer and internet speeds are fine, so I don't think this is a hardware issue.
Remote Differential Compression is off. Drivers are up-to-date from ASRock's website. I am getting 74.8MB/s internet upload speed from speedtest.net (http://www.speedtest.net/result/1852752479.png). Inbound network file transfer I can get around 10-15MB/s.
I looked everywhere and can't find symptoms that fits my case well. I'd be cheering if I can get 1MB/s. Well, maybe not, but at this point it is more efficient for me to upload everything to the Internet and download them again than to use local file transfer,
which is just absurd.
I am hoping this community has some insight for me to troubleshoot this. I don't see anything obviously related from the Event Viewer, and beyond that I just don't know where else to look.
Any suggestions are greatly appreciated, thank you in advance.

Hi,
Firstly, would you please try again to install the HotFix instead of disabling TCPAuto-Tuning and Windows Scaling heuristics via netsh manually.
If issue persists, please try following:
1. Test the issue in Safe Mode with Networking.
2. Disable "Large Send Offload".
How to:
1) Open an elevated command prompt and press Enter:
netsh int ip set global taskoffload=disabled.
2) Disable and re-enable the network interface or reboot your system.
3) Run the following command in an elevated command prompt to confirm the command above is successful:
netsh int ip show offload
3. Check the value of “Speed & Duplex” is Auto in Advanced Properties of the NIC. If not, please let us know your value.
4. Check if “Flow Control” is disabled in Advanced Properties of your NIC.
5. Go to your Start Menu, search for “Local Security Policy“ and run it as administrator. Under Security Settings -> Local Policies -> Security Options.
1) Open “Network security:Minimum session security for NTLM SSP (including RPC based) Clients”,
unselect “Require NTLMv2 session security” and “Require 128-bit encryption”.
2) Do the same operation to “Network security:Minimum session security for NTLM SSP (including RPC based) Servers”.
3) Open
the policy “Network Security LAN Manager authentication level“. Locate and select the option “Send LM & NTLM – use NTLMv2 session security if negotiated“. Click Apply, and close out of all
policy management windows.
Hope this helps.
If a post solved your problem, click “Mark as Answer” on the post. If a post helped you, click "Vote As Helpful" on the left side of post.

Can't Complete File Transfer to iDisk

I have a large (210 MB) PDF file I am trying to load onto my iDisk to transfer it to someone else. The file transfer goes rapidly, displays "Copied 209.6 MB of 209.6 MB (Closing file...) -- Please wait..
And this is displayed forever. It only stops being displayed when I force Finder to quit.
I thought it might be a permission problem but they are set appropriately. I can transfer a file <1MB without problems, although the closing time is longer than I would expect.
Any suggestions?

Well, since I use Earthlink through Time Warner, I am running on similar circuits. Do not have another option. That may be part of the problem.
Apple's interface is another. I consider it to be uninformative. The window appearing causes it to seem that the file transfer took place quickly however if you look more closely and think about it, the transfer rate for the display is too great to be true.
Oh, I wish I had a T-1 line but....
Part of the problem may be that my internet connection is through Airport. An Airport network is not that fast.
After a long period of frustration in transferring files between my computer and that of my wife using Airport, I decided to heck with it and connected us and our printer through an ethernet Gigabit LAN. The speed is great!!
One of these days I will get around to drilling holes in the wall to run the cables through closets, etc., rather than along the hall.

NIO Network File Transfer Seriously Underperforming

I've written a networked collaboration tool that implements client/server file transfer, and exhausted every NIO I/O option I can think of, yet my file transfers continue to run quite slowly on a 100-BT LAN.
All SocketChannels are set to NON-BLOCKING mode. I started with FIleChannels and ByteBuffers using the following server code:
// file transfer is running in its own thread
File = new File(filePath);
RandomAccessFile inputFile = new RandomAccessFile(file, "r");
FileChannel fileChannel = inputFile.getChannel();
ByteBuffer bb = ByteBuffer.allocateDirect(8192);
int bytesRead = 0;
while( fileChannel.read(bb) != -1 ){
     bb.flip();
     channel.write(bb);   // channel is the client SocketChannel
     bb.compact();
     Thread.sleep(20);
}The client side code is basically the same. This implementation transfers to the client at about 500k/second. Next I tried using a MappedByteBuffer to map the file into memory on the server:
File = new File(filePath);
RandomAccessFile inputFile = new RandomAccessFile(file, "r");
FileChannel fileChannel = inputFile.getChannel();
MappedByteBuffer mbb = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
while( mbb.remaining() > 0 ){
     channel.write(mbb);   // channel is the client SocketChannel
     Thread.sleep(20);
}The MappedByteBuffer actually works quickly, but only for small files. I can transfer an MP3 file in less than one second. This is the kind of performance I'm looking for. I can get 100-BT speeds on 10 or 20MB files. However, if I attempt to transfer a large file (500MB) using this method, I get the following exception calling channel.write(mbb):
java.io.IOException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full
I'm assuming this is because the call is attempting to write far too many bytes to the client SocketChannel, but I thought SocketChannel.write() would only write as many bytes as possible to a non-blocking SocketChannel, so I'm a bit confused as to why it would overflow the SocketChannel's buffer.
I tried one more implementation, using FileChannel.transferFrom and TransferTo. Here's the code on the server side:
File = new File(filePath);
RandomAccessFile inputFile = new RandomAccessFile(file, "r");
FileChannel fileChannel = inputFile.getChannel();
long written = 0;
long fileSize = fileChannel.size();
while( (written += fileChannel.transferTo(written, 8192, channel)) < fileSize ){
     Thread.sleep(20);
}This performs slightly faster than the first implementation using FileChannel and ByteBuffer, but only by 1MB/second or so on LAN. I changed the code to
fileChannel.transferTo(written, fileSize, channel)But I get the same exception during runtime:
java.io.IOException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full
So... I'm lost as to how to get acceptable LAN performance on a network file transfer. If the MappedByteBuffer implementation didn't throw an exception, then I'd be set. But I have no idea what is causing the exception and cannot locate any information on it.
Any input or suggestions would be greatly appreciated. Thanks much!

A point of interest? When you tried the
fileChannel.transferTo(written, fileSize, channel)
and got the IOException (buffer too small etc) where you using non-blocking IO? If so try it with the Socket
Channel set to Blocking mode (might help to narrow down the problem)
Also have you checked the CPU usage of your program when its transfering data?
as pkwooster said it could also be an issue with diskIO. There are many free apps on the net that will
measure the throughput your hardisk can sustain.
matfud

IChatAV and file transfer over wireless network

Hi there...
I'd like to let you in on my predicament. Firstly, a bit of background.
I decided to buy my folks an old iMac from eBay in Australia - and pay for their broadband connection - so that I could video chat to them from the UK, and they could see my 5 year old son for the first time in 4 years. Cute, eh?
Well, everything was working fine until I decided to go wireless in my home about 3 months ago. I have a static IP address, and purchased a nice new Airport Express to integrate into the system. I allocated my G5 iMac it's own network address (10.0.1.2), and the base station the master address (10.0.1.1). From there, the base station communicates to the router via the static IP... Sound ok?
Anyway - NOW (or, for as long as I can recall), I CANNOT for the life of me send files over the connection. Video chat and audio chat are fine (although OCCASIONALLY it takes a few goes to be able to see THEM on my computer - I think their bandwidth isn't THAT stable at 512Kbps down and 128Kbps up) - however, the correct ports have been unblocked on the OSX firewall AND the Airport Express base station.
And just so that you know it's not the folks' fault - I can't send documents/images over the network to friends I KNOW are competent (or, at least more competent than my parents!). There's always an error message at the receiver's end, and the file I'm attempting to send just times out.
Has anyone any suggestions as to how I might be able to resolve this problem before I expire from old age?!?
Your thoughts are REALLY appreciated!

Hi Ralph
I can see where that might be the case, but file transfer worked flawlessly BEFORE I went wireless using the same modem. The only way to unblock ports on my router is to turn NAT off - it creates a DMZ, so it permits unhindered 2-way traffic...
It's a pretty confusing piece of kit. Maybe I should just get a Netgear anyway!
I have a laptop on the wireless network as well, and file transfer works a treat between it and the iMac. All I can think of is that because I'm now working on a LAN, there's a blockage to get out to the "Real World" - even though it's easy for video to pass through.
I'll check my unblocked ports again, just to be sure. I'm unfamilar with the term "Jabber" - is that what Apple decided to call one of the elements of iChat? Excuse my ignorance...!

File transfer on LAN

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