[wplug] SMB connection slowing down

[Jason Jerome]

I had something similar to this a long time ago (so my knowledge is
limited).  In my case when the file neared completetion, it never
finished.  I eventuallly figured out it had to do with my Samba server,
something to do with the size of files and bandwidth.

It may be a dead end, but it couldn't hurt to check.



--- Alexandros Papadopoulos <apapadop at alumni.carnegiemellon.edu> wrote:
> I'm copying a 130MB file from an SMB-mounted partition on a remote
> NT4 
> server, to my linux box. The server has a 100MBit NIC, the linux box
> is 
> on a 11MBit wireless link. They're both practically on the same
> switch.
> 
> Ping from my linux box to the NT server reports:
> 7 packets transmitted, 7 received, 0% packet loss, time 6056ms
> rtt min/avg/max/mdev = 3.312/3.426/3.684/0.139 ms
> 
> Although right after issuing the cp command, a couple megabytes get 
> transferred quickly (the first 10MB take less than 30 seconds), it's 
> now 4,5 hours (four and a half HOURS) later, and it has transfered
> 97MB 
> of the file in question. With a back-of-envelope calculation, that 
> works out at roughly 6KB/sec, which is pathetic for a LAN.
> 
> I stopped and re-issued the command, while sniffing with Ethereal. I 
> singled out the TCP stream, and then graphed for throughput, which
> gave 
> about 250KB/s. It's slowing down as it goes.
> 
> I don't have the first idea how to troubleshoot this, any
> suggestions?
> 
> Thanks
> 
> -A
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> 


=====
http://jjerome.com/resume


		
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