Lesser bandwidth while copying files from 1 RHEL server to abother.

 
Thread Tools Search this Thread
Operating Systems Linux Red Hat Lesser bandwidth while copying files from 1 RHEL server to abother.
# 1  
Old 04-06-2017
Lesser bandwidth while copying files from 1 RHEL server to abother.

I am facing an issue of getting lesser band width while copying file from RHEL server to another RHEL machine.In our system , there are 4 no of RHEL 5.9 Enterprise server and 2 network interface in each servers are bonded.
Out of 4, 2 machines (Server A and Server B) are with in same network and other 2s (Server C and Server D) are in different network connected via WAN link in some other location.These 2 server in other location is also inside the same network.
Now when I am copying file through SCP from Server A to Server C or Server A to Server D, it copies files at speed of 15 MB/Seconds.
But when I am copying files from Server B to Server C and server B to Server D, I am getting 2 MB / Second. Bonding conf. files are identical for all the 4 server and all 4 servers Ethernet interfaces are showing 1 GBPs 9sseen through ethtool). I am not able to find out the way how to troubleshoot this issue.Can somebody can give some clue to troubleshoot the issue.
# 2  
Old 04-06-2017
Just a few things that come to mind:
  • Are the files the same files and size, are they identical (servers A and B)?
  • What filesystem are they being copied from, are they identical (servers A and B)?
  • Are there low level errors (ethernet packet drops) or higher level errors (tcp/ip retransmits) (server B)?
  • Is LACP configured well at the switch level (server B)?
  • Are all ethernet cables well connected (server B)?
  • Are all interfaces at the right speed (server B)?
  • Do servers A and B have the same default route ?
# 3  
Old 04-06-2017
Other things to consider:-
  • Is the network port settings correct, i.e. matching your NIC settings? (preferred and actual) Have a look at the output from ethstat or ethtool or whatever it is for your OS.
  • Is there is any packet shaping/smoothing being done? There could be all sorts of network rules in play that would be invisible to you.


I hope that these help,
Robin
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Copying files to remote server

I am trying to copy code to remote server, doing something like this However it is copying one file and than the script exits i=0; j=0 while read fn; do dir=${fn%/*} # Gets directory path fnm=${fn##*/} # Gets filename excl. path rgx_nwk="s/${nwk}/${nwk}.sac/g" ... (2 Replies)
Discussion started by: kristinu
2 Replies

2. Shell Programming and Scripting

Copying the files to Windows server from UNIX server

Hi Team, I had a requirement to write a shell script which automatically transfer the files from unix server to windows server. I can able to unix to unix using Scp command. I am not sure how to do unix to windows. I am very new on this concept. Could you please help me or guide in... (4 Replies)
Discussion started by: gvkumar25
4 Replies

3. Shell Programming and Scripting

Copying files from one server to another server?

Hi all, In Server1, one directory contains files now. In this directory, based on some operations, daily some files will generate and store regularly. Now i want to copy the files to Server2 through SFTP/FTP command on daily based on the previous day present data(i.e based on the latest file... (1 Reply)
Discussion started by: venkat6134
1 Replies

4. UNIX for Dummies Questions & Answers

Copying files from one server to another

I need to copy huge set of data(files & floder) from one server to other. Can any one guide me.I have tried throught ftp mget but it is vain...floder are not moving...... Do suggest me any good method (12 Replies)
Discussion started by: kkalyan
12 Replies

5. UNIX for Dummies Questions & Answers

Copying files from different server

Is there any option to copy files from a different server other than using an SCP command??? thanks,:b: Arun manas (2 Replies)
Discussion started by: arunmanas
2 Replies

6. Shell Programming and Scripting

Copying files from one server to other.

Any one advice here- need to copy some files from one server to other server thru shell programming. (8 Replies)
Discussion started by: samkhu
8 Replies

7. UNIX for Dummies Questions & Answers

Copying a list of files from one 'server' to another?

I have two servers. I would like to copy some files from one directory on server A into the same directory on server B. Its not all the files in in the directory, just some of them. Is there a way to make a file list in a txt file and then somehow copy all the files in that list in one go to... (6 Replies)
Discussion started by: Sepia
6 Replies

8. Shell Programming and Scripting

copying files from one server to another server

Hi, I want to transfer files from one linux server to another linux server using shell script using sftp. But I dont won't that while connecting one server to another server it will ask for password , it should be part of script. I wont to know how password should be included in the... (4 Replies)
Discussion started by: manoj.solaris
4 Replies

9. UNIX for Dummies Questions & Answers

copying .profile files to a new server (SCO)

Hello Intelligent Life Forms (I hope) This should be a snap for some of you. I need to copy the /usr .profiles from 1 sco system to another. Migrating to a new server. I've tried a recursive copy to the target system with a NFS mount point from the source. Wouldn't do it permissions... (2 Replies)
Discussion started by: sighbrrguy
2 Replies

10. UNIX for Advanced & Expert Users

Copying files between 2 Unix server

Is there a simple way to copy data from one server to a different server? Seems that if 2 servers are on the same network, there should be a simple way to copy between the two. Not just one file. I need to copy a whole directory with subdirectories from one server to a different one. I... (9 Replies)
Discussion started by: Docboyeee
9 Replies
Login or Register to Ask a Question