[Samba] samba 3.0.7 on linux 2.6.8.1 with gigabit = very
slowupload speed
Laurenz, Dirk
Dirk.Laurenz at fujitsu-siemens.com
Mon Nov 1 13:58:54 GMT 2004
lower your debug level.
High debug level lowers performance...
Mit freundlichem Gruß,
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 at 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 at lists.samba.o
-| rg
-| [mailto:samba-bounces+dirk.laurenz=fujitsu-siemens.com at lists
-| .samba.org] On Behalf Of Krister Söderström
-| Sent: Monday, November 01, 2004 2:28 PM
-| To: samba at 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
-|
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