Interesting ftp client speed issue
I've come across the poor ftp speeds on my home lan while the net.inet.tcp_sockthreshold = 0 instead of the normal 256. I had set it to 0 so I can force the send/recvspace mibs to 32768 for better internet operation and efficiency. I had no idea I would be sacrificing ftp speed on my lan. More detail: Lan is 100MBFD (verified), with sockthreshold =0, I get 1.8mb/sec on ftp transfers, with it set to the default of 256, the speed jumps to 8.8mb/sec. These speed ratings are produced at the end of the file transfer via the ftp client. I'm not sure if anyone else has seen this, I discovered it while trying to tweak some AFP/SMB copy speed settings.
Power Mac G5 Dual 2Ghz/iBook G4 1.42Ghz Mac OS X (10.4.6) 2.5 Gig, Rad 9800 Pro 256M
No, I've never enabled that. I got samba tuned nicely with the SO_RCVBUF and SO_SNDBUF at 32768 (confirmed by tcpdump), but my ftp get is still pretty slow, I guess I'll stick to smb to transfer data.
Similar Messages
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Hi,
This problem only started occurring from yesterday, but I'm getting very poor FTP download speeds.
I use a dedicated server to store my work files then download at home but I'm finding it impossible now.
Speeds no higher than 150kb/s even though I have 80mb unlimited.
If I download any test files over HTTP I get full speed, its just an FTP issue (port 54630)
I've rebooted router / reconnected etc... With no luck
Can anyone help?
Much appreciatedAre you sure you are not getting confused with Mbps (Megabits per second) and MBs (Megabytes per second)?
Megabytes are Megabits divided by eight.
So a download speed of 17Mbs equates to an actual data transfer rate of 2.125MBs (Megabytes), which is what you are getting.
Download managers usually use megabytes and not megabits, so there is nothing wrong with your connection.
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. -
We have a fairly large set of users that will be soon upgrading from version 8 client to hopefully 10g. I was looking at implementing the Instant Client, as that's much easier to script and deploy to multiple users. Our software development team is concerned that there will be a performance hit on the client side from not having a full version of the Oracle client installed. Some of the software can be database intense, but I don't see the real difference between full and instant if they're just making calls to the database. Has anybody noticed any noticeable speed or performance issues with the Instant Client that they don't get with the full client? Thank you.
Hi,
>>How about anybody that switched from full client to the instant client? Things seem to work the same?
There is no problem.
Instant Client allows you to run your applications without installing the standard Oracle client or having an ORACLE_HOME. OCI, OCCI, Pro*C, ODBC, and JDBC applications work without modification, while using significantly less disk space than before.
Here is a good article for you:
http://www.databasejournal.com/features/oracle/article.php/3371561
Cheers -
IWeb integrated ftp won't connect. Settings confirmed via standard ftp client
I am nable to ftp via the iWeb integrated ftp interface. I have tested the settings via a standard ftp client without issue.
Any ideas?
Thanks! JoeiWeb is kind of unusual in that it publishes a folder containing the website files and an external index.html that opens the home page. There's also a copy of this index.html file inside the folder.
This arrangement is to suit publishing to the Apple server - MobileMe - and is kind of illogical when publishing else where.
Uploading using the iWeb built in FTP means that the URL has the folder name in the path...
http://www.domain-name.com/Site-Name/Page-Name.html
To avoid this, the site needs to be published to a local folder using the second method on the page I referred to above and the files inside the folder uploaded to the root on the server....
http://www.iwebformusicians.com/iWeb/URLs-Favicons.html -
Issue with Ftp Client / Server using Sockets
I have developed a Ftp Client and a Ftp Server. The client Connects to the Ftp Server and sends files to the ftp server. It is a multi threaded server and can have multiple clients connecting to it.
If a client goes down...the server waits till the client comes up
Similarly the client waits if a server goes down and reconnects when the server is again up and running
i am having a strange issue here. When two clients go down and reconnect to the server...They take a long time to connect and transferring of files takes a long time...
Other wise in all other scenarios the duo work properly.
Any feedback and suggestion about this strange issue from all you java gurus out there will be deeply appreciated.
Here is the client code
import java.net.*;
import java.net.Socket;
import java.net.InetAddress;
import java.io.*;
import java.io.File;
import java.util.*;
import java.lang.*;
import java.lang.Object;
import javax.crypto.*;
import java.util.regex.*;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.File.*;
import java.nio.channels.FileLock;
public class FTPClient {
public static void main(String[] args) throws Exception
Timer timer = new Timer("Test Timer");
timer.scheduleAtFixedRate(new TimerTask()
private int counter = 0;
public void run() {
try {
System.out.println(counter++);
Socket soc=new Socket("xxx.x.x.xx",5217);
System.out.println("Socket Initialised.");
transferfileClient t=new transferfileClient(soc);
t.SendFile();
System.out.println("run complete.");
catch(Exception ex)
}, 10000, 40000);
static class transferfileClient
Socket ClientSoc;
DataInputStream din;
DataOutputStream dout;
BufferedReader br;
transferfileClient(Socket soc)
try
ClientSoc=soc;
din=new DataInputStream(ClientSoc.getInputStream());
dout=new DataOutputStream(ClientSoc.getOutputStream());
br=new BufferedReader(new InputStreamReader(System.in));
catch(Exception ex)
//encrypto routine starts
class DesEncrypter {
Cipher ecipher;
Cipher dcipher;
// 8-byte Salt
byte[] salt = {
(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
// Iteration count
int iterationCount = 19;
DesEncrypter(String passPhrase) {
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
SecretKey key = SecretKeyFactory.getInstance(
"PBEWithMD5AndDES").generateSecret(keySpec);
ecipher = Cipher.getInstance(key.getAlgorithm());
dcipher = Cipher.getInstance(key.getAlgorithm());
// Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
// Create the ciphers
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
// Buffer used to transport the bytes from one stream to another
byte[] buf = new byte[1024];
public void encrypt(InputStream in, OutputStream out) {
try {
// Bytes written to out will be encrypted
out = new CipherOutputStream(out, ecipher);
// Read in the cleartext bytes and write to out to encrypt
int numRead = 0;
while ((numRead = in.read(buf)) >= 0) {
out.write(buf, 0, numRead);
out.close();
} catch (java.io.IOException e) {
public void decrypt(InputStream in, OutputStream out) {
try {
// Bytes read from in will be decrypted
in = new CipherInputStream(in, dcipher);
// Read in the decrypted bytes and write the cleartext to out
int numRead = 0;
while ((numRead = in.read(buf)) >= 0) {
out.write(buf, 0, numRead);
out.close();
} catch (java.io.IOException e) {
} //encryptor routine ends
void SendFile() throws Exception
try
String directoryName;
// File object referring to the directory.
String[] files; // Array of file names in the directory.
//directory = new File ( "C:\\FTP\\" ) ;
File directory1 = new File("C:\\FTP");
boolean successmk = directory1.mkdir();
if (!successmk) {
// Directory creation failed /Already Exists
File directory = new File("C:\\FTP\\ftpc");
boolean successmk1 = directory.mkdir();
if (!successmk1) {
// Directory creation failed /Already Exists
//directory = new File ( "E:\\FTP-encrypted" ) ;
if (directory.isDirectory() == false) {
if (directory.exists() == false)
System.out.println("There is no such directory!");
else
System.out.println("That file is not a directory.");
else {
files = directory.list();
System.out.println("Files in directory \"" + directory + "\":");
for (int i = 0; i < files.length; i++)
String patternStr = "xml";
Pattern pattern = Pattern.compile(patternStr);
Matcher matcher = pattern.matcher(files);
boolean matchFound = matcher.find();
if (matchFound) {
System.out.println(" " + files[i]);
String filename;
filename=files[i];
File f=new File(directory,filename);
FileLock lock = null;
FileOutputStream fos = new FileOutputStream(f, true);
lock = fos.getChannel().tryLock();
if (lock == null) {
System.out.println(" Failed to get the file lock: means that the file is locked by other instance.");
fos.close();
else
InetAddress addr = InetAddress.getLocalHost();
// Get IP Address
//byte[] ipAddr = addr.getAddress();
String ip= addr.toString();
// Get hostname
//String hostname = addr.getHostName();
System.out.println(" Lock Acquired.");
lock.release();
fos.close();
dout.writeUTF("SEND");
dout.writeUTF(ip);
dout.writeUTF(filename);
//String msgFromServer=din.readUTF();
DesEncrypter encrypter = new DesEncrypter("My Pass Phrase!");
// Encrypt
FileInputStream fino=new FileInputStream(f);
encrypter.encrypt(fino,
new FileOutputStream("ciphertext.txt"));
fino.close();
FileInputStream fin=new FileInputStream("ciphertext.txt");
int ch;
do
ch=fin.read();
dout.writeUTF(String.valueOf(ch));
while(ch!=-1);
fin.close();
String option;
option=din.readUTF();
if((option.compareTo("Delete")==0))
boolean success = (new File("ciphertext.txt")).delete();
boolean success1 = f.delete();
if (success) {
System.out.println("File Sent ...");
if (success1) {
System.out.println("--File deleted from Client ...");
for (int j = 0; j < 999999999; j++){}
}//pattermatch loop ends here
else
{ //System.out.println(" " + "Not an XML file-------->" +files[i]);
for (int jb = 0; jb < 111999999; jb++){}
}// for loop ends here for files in directory
}//else loop ends for directory files listing
System.out.println("sendfile finished...");
return;
} catch(Exception ex) {ex.printStackTrace();}
}//sendfile ends here
public void displayMenu() throws Exception
System.out.println(" Send File");
SendFile();
return;
And here is the server code...
import java.net.*;
import java.io.*;
import java.util.*;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.text.DateFormat;
import java.text.Format;
import java.lang.Object;
import java.lang.*;
import javax.crypto.*;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec;
public class FTPServer
{ public static void main(String args[]) throws Exception
{ ServerSocket soc=new ServerSocket(5217);
System.out.println("FTP Server Started on Port Number 5217");
while(true)
System.out.println("Waiting for Connection ...");
transferfile t=new transferfile(soc.accept());
class transferfile extends Thread
Socket ClientSoc;
DataInputStream din;
DataOutputStream dout;
transferfile(Socket soc)
{ try
{ ClientSoc=soc;
din=new DataInputStream(ClientSoc.getInputStream());
dout=new DataOutputStream(ClientSoc.getOutputStream());
System.out.println("FTP Client Connected ...");
System.out.println("External IP of Client ..." + ClientSoc.getInetAddress());
//System.out.println("FTP Client Connected ..." + ClientSoc.getRemoteSocketAddress());
start();
catch(Exception ex)
//encrypto routine starts
class DesEncrypter {
Cipher ecipher;
Cipher dcipher;
// 8-byte Salt
byte[] salt = {
(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03 };
// Iteration count
int iterationCount = 19;
DesEncrypter(String passPhrase) {
try {
// Create the key
KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
SecretKey key = SecretKeyFactory.getInstance(
"PBEWithMD5AndDES").generateSecret(keySpec);
ecipher = Cipher.getInstance(key.getAlgorithm());
dcipher = Cipher.getInstance(key.getAlgorithm());
// Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
// Create the ciphers
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
} catch (java.security.InvalidAlgorithmParameterException e) {
} catch (java.security.spec.InvalidKeySpecException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
// Buffer used to transport the bytes from one stream to another
byte[] buf = new byte[1024];
public void encrypt(InputStream in, OutputStream out) {
try {
// Bytes written to out will be encrypted
out = new CipherOutputStream(out, ecipher);
// Read in the cleartext bytes and write to out to encrypt
int numRead = 0;
while ((numRead = in.read(buf)) >= 0) {
out.write(buf, 0, numRead);
out.close();
} catch (java.io.IOException e) {
public void decrypt(InputStream in, OutputStream out) {
try {
// Bytes read from in will be decrypted
in = new CipherInputStream(in, dcipher);
// Read in the decrypted bytes and write the cleartext to out
int numRead = 0;
while ((numRead = in.read(buf)) >= 0) {
out.write(buf, 0, numRead);
//added later on
in.close();
out.close();
} catch (java.io.IOException e) {
} //encryptor routine ends
//not implemented right now as we arent using the ftp server to download stuff...can be activated later on if we want
void SendFile() throws Exception
String filename=din.readUTF();
File f=new File(filename);
if(!f.exists())
dout.writeUTF("File Not Found");
return;
else
{ dout.writeUTF("READY");
FileInputStream fin=new FileInputStream(f);
int ch;
do
ch=fin.read();
dout.writeUTF(String.valueOf(ch));
while(ch!=-1);
fin.close();
dout.writeUTF("File Received Successfully");
String Compare(String filename) throws Exception
///dout.writeUTF("entering compare");
String dateTempString=new String();
Date dateValue=new Date();
SimpleDateFormat formatter = new SimpleDateFormat ("hhmmss");
dateTempString = formatter.format(dateValue);
File dir1 = new File("C:\\FTPnew");
boolean success2 = dir1.mkdir();
if (!success2) {
// Directory creation failed /Already Exists
File dir = new File("C:\\FTPnew\\server");
boolean success = dir.mkdir();
if (!success) {
// Directory creation failed /Already Exists
File ftemp=new File(dir,dateTempString + filename);
File fnewtemp=new File(dir,"new-enc-"+filename);
// Create encrypter/decrypter class
DesEncrypter encrypter = new DesEncrypter("My Pass Phrase!");
FileOutputStream fout=new FileOutputStream(fnewtemp);
int ch;
String temp;
do
{ temp=din.readUTF();
ch=Integer.parseInt(temp);
if(ch!=-1)
fout.write(ch);
}while(ch!=-1);
fout.close();
//dout.writeUTF("written temp en file");
// Decrypt
encrypter.decrypt(new FileInputStream(fnewtemp),
new FileOutputStream(ftemp));
//String Option;
dout.writeUTF("Delete");
System.out.println("File Upload Successfull--Duplicate file with timestamp Created");
boolean success1 = fnewtemp.delete();
return "hello" ;
void ReceiveFile() throws Exception
String ip=din.readUTF();
System.out.println("\tRequest Coming from Internal IP Address : "+ ip);
String filename=din.readUTF();
if(filename.compareTo("File not found")==0)
return;
// Destination directory
File dir11 = new File("C:\\FTPnew");
boolean success22 = dir11.mkdir();
if (!success22) {
// Directory creation failed /Already Exists
File dir = new File("C:\\FTPnew\\server");
boolean success21 = dir.mkdir();
if (!success21) {
// Directory creation failed /Already Exists
File f=new File(dir ,"enc-"+filename);
File fe=new File(dir,filename);
String option;
if(fe.exists())
//dout.writeUTF("File Already Exists");
String compvalue = Compare(filename);
//dout.writeUTF(compvalue);
if(compvalue.compareTo("hello")==0)
//dout.writeUTF("Transfer Completed");
return;
option=din.readUTF();
else
//dout.writeUTF("SendFile");
option="Y";
if(option.compareTo("Y")==0)
// Generate a temporary key.
// Create encrypter/decrypter class
DesEncrypter encrypter = new DesEncrypter("My Pass Phrase!");
FileOutputStream fout=new FileOutputStream(f);
int ch;
String temp;
do
{ temp=din.readUTF();
ch=Integer.parseInt(temp);
if(ch!=-1)
fout.write(ch);
}while(ch!=-1);
fout.close();
// Decrypt
encrypter.decrypt(new FileInputStream(f),
new FileOutputStream(fe));
boolean success2 = f.delete();
dout.writeUTF("Delete");
System.out.println("File Upload Successfull");
else
return;
public void run()
while(true)
try
String Command=din.readUTF();
if(Command.compareTo("SEND")==0)
System.out.println("\tSEND Command Received ...");
ReceiveFile();
continue;
catch(Exception ex)
//System.out.println("\tClient Terminated Abnormally ...........");
continue;Please note that this is not an FTP client and server. FTP is defined by a standard IETF protocol and this isn't it.
Then, move the following lines:
din=new DataInputStream(ClientSoc.getInputStream());
dout=new DataOutputStream(ClientSoc.getOutputStream());
System.out.println("FTP Client Connected ...");
System.out.println("External IP of Client ..." + ClientSoc.getInetAddress());
//System.out.println("FTP Client Connected ..."+ClientSoc.getRemoteSocketAddress());from the constructor into the run() method. i.e. don't do anything with the socket in the thread which handles the accept(). -
Issue with vlc steaming through dolphin ftp client
I am not sure if i should post this here or in the multimedia section excuse me if i am mistaken. I have been using archlinux in almost 4 weeks with gnome 3. I have installed kde today after removing gnome(pacman -Rscn gnome). I have a small home server running ftp server where i have some media files(.mkv). In gnome i usually used nautilus to access the ftp folder(sftp://servername.dyndns.org/srv/) and run vlc to stream the medias. Tried to do the same with kde dolphin with no luck.
First i was not able to view the folder with dolphin. I researched abd found this thread with a solution:
http://forum.kde.org/viewtopic.php?f=18 … 5&start=15
Now i am able to access the folder, but can't stream any media using vlc.
The following errors are from vlc:
Your input can't be opened:
VLC is unable to open the MRL.
sftp://servername.dyndns.org/srv/filename.mkv
Check the log for details.
Going into tools->messages gives the followings:
main error: open of
sftp://servername.dyndns.org/srv/filename.mkv failed:(null)
I suspect something is wrong the ftp client configuration in dolphin. This bug report also bothers me also :
http://old.nabble.com/-Bug-274170--New% … 05158.html
Other thing is that i am able to open the media files using other media players(dragon player, mplayer), but then the files are automatically downloaded into the local folder /var/tmp/kdecache-username/krun/filename.mkv. The media player then loads the file from there. Its the same if i open a text file in the server, edit it and save it. Its first downloaded to the /var/ folder then asked to upload back to the server when closed.
Its my conclusion that the ftp client in dolphin does not work properly or KDE KIO works different then whatever is used in gnome/nautilus. I hope i have explained the issue as good as possible and would appreciate any help or lead to how to solve this.Thanks for your reply, after checking some ideas I found that to get the ftp to work I needed to use the internal IP 10.0.0.1 for it rather than the old normal IP like before the firewall(probably a very beginner error sorry for that). And I discovered the exact issue causing clients to not see their characters if not using Hamachi.
Hamachi treats everyone join to the network as though they are local I believe, so when the server send character info via Hamachi it thinks it is sending the info locally and then Hamachi itself sends it out to the extrenal client, while tracing the data I found that the login process sends a 33 byte packet of data to the client via TCP from port 5051 out to the client on a rnadom port usually in the range of 40000-50000 telling the client to send a request to the other process to ask for the character information.
Now for some reason I see when a client logs in through Hamachi that packet is sent correctly to their Hamachi IP and recived fine.(sent from 10.0.0.1:5051 to the Hamachi IP:40k-50k) but when a client tries to log in using a normal IP with Hamachi turned off, the log in process does send the 33 byte packet from 10.0.0.1:5051 to the client WAN IP through the usual port but the client never recieves this packet and as such doesn't not request the character information.
So my guess is something on the 5505 is disallowing the log in process to send the data externally to the clients WAN IP's? Though this is very odd because it does allow the client to actually log in to the account and seems to recieve at least part of that information fine.
If any help that might resolve this for me can be given I would very much appreciate it, this issue is limiting my client base and as such my income and business as a whole. Thank you in advance for any help given. -
FTP issues with DW CS5 that don't happen with an FTP client or MX
On a mac OS 10.6.4, using DW CS5 to login to an existing site using FTP. It connects fine but then all I get is a .txt file with a note indicating that FTP can't be used when Frontpage extensions are activated. I checked on my webserver status (at 1&1) and they aren't active. So I tried with an FTP client like cyberduck and all the files are there. Likewise, I used an old version of DW (think it was MX vintage 2002) and all the files show up server side just fine - (I just can't download the site due to version incompatibility so DW rejects it). Does anyone know what could be going wrong here? As far as I know the site was created by DWMX (think that was 2004). Thanks
I assumed that if I was using an older version of DW then it wouldn't download pages authored with a later version but I guess it's just code...
Yep - it's just text files containing HTML, CSS, javascript, and links to other files.
When using FTP through DWMX I see the server side of the site
You can see the files listed on the remote server?
I can send you the details if you wish, I'm not sure what's going on here...
You can try sending to forums at domain dot com (replace 'domain' with 'great-web-sights') -
Hi all.
Let me go through the issue I have come across tonight. I have a WRT54G version 7 cable router, and I have Telewest as my ISP, with the 4Mb service. My computer is hard wired into the router, and have no wireless clients connected at the time. I get packet loss, (quite a bit) and my download speeds are abismal. Setting my computer to dhcp or fixed IP makes no difference. I even forced 100 Full duplex on the LAN card just to be sure. I phoned up TW tech support, and they were pretty helpful, and asked me to bypass the router, and plug directly into the modem and turn dhcp on my pc and reboot the modem.
All works fine, no speed issues, download test from here is perfect. They asked me to download something off their server here http://gamefiles.blueyonder.co.uk and I am getting full 480kB/s And here is the test plugged right into the modem http://www.thinkbroadband.com/speedtest/results/id/117018476054017621619.html
Happy days, right? Problem with the router, right?
Well.. It gets interesting.
I then do a firmware update on the router, reset it to factory defaults, and re-run the test going through the router. Here is the pitiful result., which is the same as before. http://www.thinkbroadband.com/speedtest/results/id/117018491367303621734.html
Ok... so problem with the router still... right?
I tried the blueyonder file download, and guess what... 480KB/s again, downloaded a 5 meg file in about 12 seconds.
What I have tried:
Forcing the LAN to 100Meg full duplex
Firmware upgrade on the router
Reset router to factory defaults
Rebooted pc, router and modem at the same time.
Use a static IP with correct settings (same speed)
Use DHCP through the router
Connected directly to the cable modem and use DHCP (works fine)
PC windows xp SP2 fully patched.
No software firewalls. (at any time)
Disabling UPNP on the router
Turned flow control off on the LAN adapter (shouldnt be on in the first place, thats half duplex >.)
I cant see why my computer downloads from blueyonder fine with no speed issues at all, and yet any other website, I get extremely poor performance. This router has been working fine for about a month now, just needed a few reboots once in a while, but which router doesnt. My upload speeds seem pretty constant, and dont seem to vary regardless of router or not. Seems like inbound traffic is getting jammed.
Anyone able to shed some thought? Sorry for the wall of text, just thought I would let you know everything on the first post instead of having to reply a dozen times.try TCP Optimiser .. This should adjust the MTU settings of the NIC on the PC ...
-
Hi guys,
This question is specifically about "Transmit" for mac but I think it might be generic enough for any FTP client.
According to Speedtest.com, on a bad day I should still be getting .8 or.9 Mbps on upload speed. FTPing into my server with transmit is currently topping out at ~100KB/s ….
It's also making doing anything else online almost impossible.
What are the factors I should be looking for to see if I can speed this up? Is it software? the router? my host? Anyone got a good troubleshooting path for this?Hi,
As you are using your own application on client system to send files, it may cause difference in uploading files via FTP when using buid-in FTP server or a third party FTP server.
First please test to disable Windows Firewall or any third party firewall on both client and server side to see if slowness issue still exists.
Meanwhile, FTP commend line does not support passive mode FTP connection. If your application works like FTP.exe, it could also be the cause. Have you tried to upload files via Internet Explorer? Have a try with enable passive mode FTP:
Check the box in IE settings - Tools - Internet Options - Advanced - "Use Passive FTP"in "Browsing" section.
Also disable Folder View for browsing in IE for passive mode to function in Advanced - "Enable FTP Folder View". Uncheck it.
Also there is a known issue with a hotfix:
FTP client does not establish a passive-mode FTP connection to an IPv4 FTP server in Windows 7 or in Windows Server 2008 R2
http://support2.microsoft.com/kb/2754804/en-us
If you have any feedback on our support, please send to [email protected] -
FTP client is not working in active mode
Hi,
I have a ftp issue trying to download iweb files.
My provider enabled me a ftp access.
I tried to connect to it with transmit or rbrowser ftp client (passive mode disabled). The connection works well but i can not retrieve the list of files.
However using my PC and filezilla ftp client in active mode, the connection did work properly.
Any idea to help make this connection work on my mac ?
ThanksPerhaps this will help...
http://slacksite.com/other/ftp.html
"The main problem with active mode FTP actually falls on the client side. The FTP client doesn't make the actual connection to the data port of the server--it simply tells the server what port it is listening on and the server connects back to the specified port on the client. From the client side firewall this appears to be an outside system initiating a connection to an internal client--something that is usually blocked." -
How can FTP users access my NAS system via FTP client?
I recently purchased a 2 bay, 4TB Buffalo Link Station DUO in order to solve some FTP issues. I have about 50 users outside my LAN that need to connect drop files on my NAS, however nobody seems able to connect via FTP client. If they login using the Web Access Dynamic DNS address they can read and write via their web browser, but it's clunky and slow.
My NAS system has been given the IP adress of 192.168.1.254 which seem to me that it's a local IP adress, not a public/static IP. Do I need to manually assign an IP adress to my NAS system in order fot users to log into that specific IP and go directly to the shared folders on the NAS system?
Thanks in advance!Your NAS is getting that IP because it is behind your Router, which is the normal way to use it and as it should be.
You can not ASSIGN a public IP you your NAS. Only your ISP can do that and usually that incures an extra cost for more than 1 Public IP address. Usually included with a Business account and most of the time only available with a Business account. ISP do not want home owners running FTP or Mail servers on a residential acounts.
As noted you have to forward the noraml FTP port, port 21, in your Router to the IP of the NAS. Since you already have that port forwarded to your Mac, which I have no idea why you did that, you have to either change that port forwarding to the NAS IP or make the FTP server on the NAS respond to some other port and forward that on the router to the IP of the NAS. The to access the NAS FTP server you have to enter the piblic IP address of your router followed with a :and port #. XXX.XXX.XXX.XXX:22 or whatever port # you assign to the FTP server on the NAS. -
Iteration Speed issue when Indexing 3D array wried to a while-loop
Brief Description of my Program:
I am working on the real-time signal generation by using LabView and DAQmx (PCI-6110 card). My vi reads the big data file (typically 8MB txt file containing about 400,000 samples (complex double precision). Then, the signal is pre-processed and I end up with a huge 3D array to feed while-loop (typically 3D array dimension is N x 7 x M where N & M >> 7). Inside the loop, that 3D array is indexed and processed before the results are written to the DAQmx outputs. I have a speed issue when indexing the large 3D array (i.e, 3D array having a large sub-array size). My while-loop could not run fast enough to top-up the DAQmx AO buffer (at the output rate of 96kHz). It could run faster only if I use smaller 3D array (i.e, smaller-sized sub-arrays). I do not quite understand why the size of 3D sub-array affects the rate of looping although I am indexing same sub-array size at each iteration. I really appreciate your comments, advices and helps.
I include my 3D array format as a picture below.
Question on LabView:
How does indexing an 3D array which wires to the while-loop affect the speed of the loop iteration? I found that large dimension of sub-arrays in the 3D array slows down the iteration speed by comparing to indexing the same size of sub-array from smaller-sized sub-arrays of the 3D array to perform signal processing inside the while-loop. Why? Is there any other way of designing LabView Program to improve speed of iteration?
attachment:Thank you all for your prompt replies and your interests. I am sorry about my attachment. But, I have now attached a jpg format image file as you suggested.
I had read the few papers on large data handling such as "LabVIEW Performance and Memory Management". Thus, I had already tried to avoid making unnecessary copies of data and growing arrays in my while-loop. I am not an expert on LabView, so I am not sure if the issues I have are just LabView fundamental limitations or there are any other ways to improve the iteration speed without reducing the input file size and DAQ output rate.
As you request, I also attach my top-level vi showing essential sections such as while-loop and its indexing. The attached file is as an image jpg format because the actual vi including Sub-VIs are as big as 3MB in total. I hope my attachment would be useful for anyone who would like to reply my question. If anyone would like to see my whole vi & llb files, I would be interesting to send it to you by an e-mail privately and thus please provide your e-mail address.
The dimension of my 3D array is N x 7 x M (Page x Row x Column), where N represents number of pages in 3D array, and M represents the size of 1D array. The file I am currently using forms 3D array of N = 28, & M = 10,731. Refering to the top-level vi picture I attached, my while-loop indexes each page per iteration and wrap-around. The sub-VI called "channel" inside the while-loop will further index its input (2D array) into seven of 1D arrays for other signal processsing. The output from that "channel" sub-VI is the superposition of those seven arrays. I hope my explaination is clear.
Attachement: 3Darray.jpg and MyVi.jpg
Kind Regards,
Shein
Attachments:
3Darray.jpg 30 KB
MyVI.jpg 87 KB -
Looking for a specific feature in an FTP Client
Hello!
I am looking for a "simple" feature in any FTP client for OS X.
I have tried Fetch, Transmit, CyberDuck and Interarchy 7.x and none had the ability to throttle uploads/downloads. I work with a limited bandwidth and sometimes have to download files (or upload) in the background but at a very slow speed (because the peer has a poor connection).
None of these nice (and they are nice!) ftp programs can do this. I have to either use wget via the command line (wget --limit-rate=xx) or use Total Commander for Windows inside a Parallels Virtual Machine.
Does anybody know about a Mac FTP client that can throttle and enqueue items easily?
Thanks in advance!Look at "lftp". It as about a zillion parameters that can be set. One of them is "net:limit-total-rate"
Quoted from the Docs....
limit transfer rate of all connections in sum. 0 means unlimited. You can specify two numbers separated by colon to limit download and upload rate separately. Note that sockets have receive buffers on them, this can lead to network link load higher than this rate limit just after transfer beginning. You can try to set net:socket-buffer to relatively small value to avoid this.
Find lftp here lftp.yar.ru It is also in thr Fink archive. http://fink.sourceforge.net/ -
FTP Clients on E72: can't get any to work
Hello again.
So, I've been trying to get FTP Client functionality on my Nokia E72. I guess I'm just doing something wrong, but I cannot figure it out.
I tried:
* SIC! FTP (native Symbian App)
* PaderSyncFTP (Java)
* MobyExplorer (Java)
None of the applications work on my E72. They do work however (with the same SIM card) on my Nokia 6120 classic.
The applications seemingly try to connect on the E72, however it never actually initiates a packet data connection at all. As if there wouldn't be an application trying to access the Internet.. I also tried to set up WLAN as my primary access point. Works for everything else, but not for those FTP clients.
I tried several FTP servers on different ports (21, 666, 667). All work on 6120 classic, none work on E72. Also tried to switch from passive to active mode to no avail.
Funny thing is: When I use my PuTTY SSH Client on E72 to just probe an FTP servers port, that works! I can see the connection attempt in my FTP Servers logfile, and I can see the Server responding in PuTTY!! But with the actual FTP clients i never even get out into the network, wether I try to use WLAN or 3.5G..
I'm lost. Everything else works. SSH2 using PuTTY works, Skype works, webbrowsing works.
What could be prohibiting all those FTP clients from initiating a connection?! For MobyExplorer I even tried all of its four "connection modes" that they have for "buggy firmwares". Doesn't make a difference at all.
Also: Those apps never ask for an Access Point on the E72, even if the AP is configured to do so.
I have no idea what to do... Any advice would be appreciated! Maybe it's just some strange configuration issue..
Thanks.k-lite is a free codec that makes windows media player 11 work and it has its own player.
T430u, x301, x200T, x61T, x61, x32, x41T, x40, U160, ThinkPad Tablet 1838-22R, Z500 touch, Yoga Tab 2 Windows 8.1, Yoga Tablet 3 Pro
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How to get the FTP clients to work?
This is something that (to me at least) should be trivial but I just can't
get it to work at all.
How do you get an FTP client to work?
I've tried several GUI clients as well as the terminal FTP command and they
all seem to get stuck entering passive mode - according to the log entries
they send the command.... And then nothing or a timeout, the following is
from the terminal FTP command:
Titania:~ susan$ ftp ftp.apple.com
Trying 17.254.16.11...
Connected to ftp.apple.com.
220 17.254.16.11 FTP server ready
Name (ftp.apple.com:susan): anonymous
331 Anonymous login ok, send your complete email address as your password.
Password:
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
501 EPSV: Operation not permitted
227 Entering Passive Mode (17,254,16,11,223,157).
200 PORT command successful
421 Service not available, remote server timed out. Connection closed
ftp>
In my System Preferences -> Network panel in the Proxies tab, I have the
"use Passive FTP mode (PASV) checked.
I also have checked the FTP firewall option (but I think that is only if I'm
acting as an FTP server).
I am connected to the internet via a Netgear wireless router.
I also have an old Windows laptop that also uses the same wireless router
and it can FTP quite happily!!!!!
Any suggestions would be gratefully received.
Susanejn - thanks for your continued assistance.
I've tried turning the firewall off but this does not appear to make any difference(*). Also, I have Parallels installed and I'm sharing the internet connection with this (even though Parallels itself is not currently running). Turning this sharing off doesn't seem to change anything either.
I have noticed some entries in the ifpw.log file that coincide with some of the ftp actions. Given the following terminal session:
Titania:~ susan$ ftp ftp.apple.com
Trying 17.254.16.10...
Connected to ftp.apple.com.
220 17.254.16.10 FTP server ready
Name (ftp.apple.com:susan): anonymous
331 Anonymous login ok, send your complete email address as your password.
Password:
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
501 EPSV: Operation not permitted
227 Entering Passive Mode (17,254,16,10,245,46).
200 PORT command successful
421 Service not available, remote server timed out. Connection closed
ftp>
at the time the "200 PORT command successful" is displayed, the ifpw log starts showing:
Sep 5 09:11:21 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:24 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:27 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:30 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:33 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:36 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
Sep 5 09:11:42 Titania ipfw: 12190 Deny TCP 17.254.16.10:20 192.168.0.5:49162 in via en1
which makes sense as the system tries to go for an active transfer.
(*) Actually, while I've been writing this, I've been playing on the terminal as well. I've found the combination of:
1) turning off the firewall
2) starting ftp
3) issuing the 'passive' command to turn off passive mode
4) issuing 'ls' etc. works
Looks like I've not been waiting long enough for the ftp client to get sick of trying the passive transfer and switching to an active one with the firewakk turned off!
Still doesn't answer the question - why does passive mode not work?
Susan
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