samba - Nov 2004 - samba 3.0.7 on linux 2.6.8.1 with gigabit = very slowupload speed

lower your debug level.
High debug level lowers performance...

Mit freundlichem Gru?,



Dirk Laurenz
Systems Engineer	

Fujitsu Siemens Computers
Sales Central Europe Deutschland 
Professional Service Organisation Nord / Ost

Hildesheimer Strasse 25
30880 Laatzen
Germany

Telephone:	+49 (511) 84 89 - 18 08
Telefax:	+49 (511) 84 89 - 25 18 08
Mobile:	+49 (170) 22 10 781
Email:	mailto:dirk.laurenz@fujitsu-siemens.com
Internet:	http://www.fujitsu-siemens.com
           
http://www.fujitsu-siemens.de/rl/servicesupport/itdienstleistungen/competencecenter.html
*******************************************************************************************************************
  

-|  -----Original Message-----
-|  From: 
-|  samba-bounces+dirk.laurenz=fujitsu-siemens.com@lists.samba.o
-|  rg 
-|  [mailto:samba-bounces+dirk.laurenz=fujitsu-siemens.com@lists
-|  .samba.org] On Behalf Of Krister S?derstr?m
-|  Sent: Monday, November 01, 2004 2:28 PM
-|  To: samba@lists.samba.org
-|  Subject: [Samba] samba 3.0.7 on linux 2.6.8.1 with gigabit 
-|  = very slowupload speed
-|  
-|  Here's the problem in a nutshell:
-|  
-|  One samba-server (stand alone)
-|  A couple of Windows XP (sp2) clients
-|  All connected through a gigabit network
-|  
-|  Transfers between two of the windows computers works just 
-|  fine and the 
-|  speed is about 20-30MB/s.
-|  Transfers from the server to any windows computer also 
-|  works fine and 
-|  has the same speed.
-|  Transfers TO the server from any windows computer is horribly slow 
-|  (under 1MB/s).
-|  BUT if a try to unpack a rar-file using winrar directly to 
-|  the server 
-|  the transfer speed is the "normal" 20-30MB/s.
-|  
-|  The specifics:
-|  ------------------------
-|  I've used the word "upload" as transfering a file from a 
-|  windows client 
-|  to smb-server.  And "download" is the opposite of course.
-|  
-|  Samba server:
-|  Athlon 64 with 1,5 gig of ram. The problem occurs with both 
-|  slackware 
-|  10, default install (32bit) and with a 64-bits compile of 
-|  gentoo. I've 
-|  also tested with slackwares precompiled samba-package 
-|  (3.0.4), compiling 
-|  the soure 3.0.7 under both slackware and 64-bit gentoo. But 
-|  the upload 
-|  speed is consistent.
-|  
-|  Clients:
-|  Barton 2500+ and better. 512Mb ram or more.
-|  
-|  Network:
-|  Gigabit copper. There's no other problem with the network. 
-|  No packet 
-|  errors or other to indicate any hardware trouble. Testing 
-|  to run nfs 
-|  from a linux-client against the samba-server gives a 
-|  transfer speed (in 
-|  both directions) of 40MB/s.
-|  
-|  What I've tried so far:
-|  ---------------------------------------
-|  When the problem occurs, ie. uploading a file to the 
-|  server, none of the 
-|  cpus are working more than 2-3%. There's no strange output 
-|  in the samba 
-|  logfiles or any indication of network troubles (like 
-|  collisions, packet 
-|  errors and so on).
-|  
-|  I dumped a download and an upload with tcpdump and looked 
-|  at it with 
-|  ethereal. But i couldn't see anything strange except one 
-|  thing. I know 
-|  too little about the smb-protocoll to dicide whether the 
-|  logs indicate a 
-|  problem or not but they are included at the bottom in case 
-|  anyone has 
-|  any suggestions.
-|  
-|  I have also tried a lot of configuration options. Including default 
-|  configuration, sendfile on/off, and a bunch of different 
-|  protocoll and 
-|  tuning options. But it doesn't seem to make any difference, 
-|  at least not 
-|  for the upload speed.
-|  
-|  Uploading multiple files in parallell helps a little but the total 
-|  upload speed never goes above 3MB/s.
-|  
-|  To exclude some of the hardware on the server I have also tried 
-|  uploading files to a ram-disk (using ramfs) but it didn't change 
-|  anything but the download speed.
-|  
-|  TCPdump files
-|  --------------------------
-|  I only exported a litte piece of the transfer. If there's something 
-|  missing let me know.
-|  http://www.ludd.ltu.se/~imz/upload.txt
-|  http://www.ludd.ltu.se/~imz/download.txt
-|  
-|  -- 
-|  To unsubscribe from this list go to the following URL and read the
-|  instructions:  http://lists.samba.org/mailman/listinfo/samba
-|