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Old 12-05-2007, 05:32 PM   #1
uncle-c
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Diagnosing reasons for slow transfer speed when transfering files from XP to Linux ?


Hi there !
I've got a linux box connected to an XP machine (crossover cable) and have got Samba working. Today I was viewing my XP share using Konqueror and decided to transfer files from XP to my linux desktop using drag and drop.
The transfer speed was ridiculously slow, slipping down to 16Kb/s, usually it is 450 Kb/s. Could anyone help in how to elucidate and diagnose this and similar problems. How could I find out what is causing this slow network file transfer. Help with any methods / techniques / commands to solve problems such as these would be very much appreciated.

Thanks again !!!!

Uncle
 
Old 12-05-2007, 06:15 PM   #2
sydney-troz
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If you ping your xp box, is there significant packet loss?

Even 450kb/s is slow for a LAN, do you know why its that slow normally?
 
Old 12-06-2007, 06:37 AM   #3
uncle-c
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Thanks for the reply sydney-t.
When I transfer a file form XP to Linux using the pscp ( Putty Secure Copy ) command transfer speed is between 400-450 on average. I can ping from Linux to XP and no packets are dropped

Code:
[uncle@localhost ~]$ ping 192.168.0.1  pinging my XP box 
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=128 time=0.679 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=128 time=0.664 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=128 time=0.666 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=128 time=0.668 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=128 time=0.660 ms

--- 192.168.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 0.660/0.667/0.679/0.023 ms
When I ping my Linux box I get this odd output. I used the windows command line ping command and a GUI based ping program and get the same output.

Code:
C:\TMP ping -n 5 192.168.0.11  pinging my  Linux  

Pinging 192.168.0.11 with 32 bytes of data:

Reply from 192.168.0.11: bytes=32 time=1ms TTL=64
Reply from 192.168.0.11: bytes=32 time<1ms TTL=64
Reply from 192.168.0.11: bytes=32 time<1ms TTL=64
Reply from 192.168.0.11: bytes=32 time<1ms TTL=64
Reply from 192.168.0.11: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.0.11:

    Packets: Sent = 5, Received = 5, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 1ms, Average = 0ms
As you can see I don't get any actual informative data / numbers from the windows to linux ping output.
Would really like some help/advice to diagnose this little dilemma. Does this indicate problems on the "network." I only have one XP pc connected to one linux box so I'm not sure if that could be classed as a fully fledged network.
Just to add that I use ICS from my XP to my Linux and speeds for net downloads are not affected. Download speeds onto my linux are exactly the same as the download speeds on my XP.

Thanks again !

Uncle

Last edited by uncle-c; 12-06-2007 at 07:05 AM. Reason: addition of material
 
Old 12-06-2007, 08:26 AM   #4
jiml8
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I have seen this problem with some Windows TCP/IP stacks, if not all stacks were identical versions. Of course, this is the situation here since one of the boxes is Linux. I never have sorted it out.

What version of XP? What service pack?
 
Old 12-06-2007, 09:43 AM   #5
strick1226
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What is the speed of a raw samba copy (not using SCP)?
 
Old 09-03-2008, 01:35 AM   #6
kendyke
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pls, check that crossover cable is or not configured ok
 
  


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