[Samba] Horrendously slow transfer speeds in FC3 is driving me crazy!!! Please help...

Peter Szmrecsanyi peter at totallinux.com.br
Fri May 13 14:24:25 GMT 2005

I have a 3Com 10/100 switch, it's not too expensive but I wouldn't 
classify it as cheap... But that has never been the problem as I can 
acheive good rates between Windows machines (I have XP on a laptop and 
2000 on a desktop). My probem is specifically SAMBA 3 running on FC3 on 
a ProLaint 2500... Next time I'm at home (probably this weekend) I'll 
try setting up a server on the laptop (P4 3.4G w/ HT, 1 GB of RAM, 1 
Gbps BroadCom NIC - hardware is flawless) which has FC3 dual boot. But I 
have a feeling that the results wont be that different, if they are I'll 
settle for a new DMA capable NIC on the ProLiant... But since I've 
compiled Samba 2.2.12 I may as well try it and see if I can get better 
performance. In anycase I'll let you know.


AragonX escreveu:

><quote who="pb">
>>When trying to improve upon the 7 Mbyte/sec I found that nothing helped
>>at all. Compiling with different flags (O3, etc), made no difference
>>(cpu load very low anyway) Kernel made no difference (I used Slakware's
>>v.8, v.9 and currently use v.10) With or without Hyperthreading on the
>>P4 enabled (via custom kernels) made no difference.Different 100TX patch
>>cables made no difference.
>>It was the crap switch in my case.
>Following the advice from you and others, I tried a new switch.  The time
>to open the application went down from 3 minutes to about 1.5 minutes. 
>This is a great improvement but I fear it treated the symptom and not the
>problem.  A minute and a half to open an application is still far too
>long.  The amount of data going over the network is huge.  The network
>light flashes constant for the entire 1.5 minutes.  Next I'll try a
>network sniffer and see what is being transmitted.

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