XP -> SMB-share=fast, SMB-share -> XP=slow

meulie

Hi all!

I'm having some throughput problems with a new Samba install on a amd64 system. Traffic going from XP clients to the SMB-shares goes at full speed, whereas traffic from the SMB-shares to the XP clients averages at about 5% capacity.

Where should I start looking/debugging...?
_________________
Greetz,
Evert Meulie

sschlueter · Posted: Thu Aug 30, 2007 8:31 pm Post subject:

Some basic stuff to get you started...

* Disable XP firewall and any other software firewall that may be running. Test speed again.

* Make sure that the ethernet link is full-duplex at both ends. Check for transmit/receive errors and collisions.

* Test upload/download speed with vsftpd server and FileZilla client.

meulie · Posted: Fri Aug 31, 2007 4:27 am Post subject:

meulie · Posted: Fri Aug 31, 2007 7:55 pm Post subject:

meulie · Posted: Mon Sep 03, 2007 3:49 pm Post subject:

To make it even weirder: The SMB -> XP transfer DOES speed up as soon as I (at the same time) transfer a file in the XP -> SMB direction! Then both transfers go at speeds close to 100 Mbps...

_________________
Greetz,
Evert Meulie

agenthex · n00b Joined: 19 Sep 2007 Posts: 1 Location: Portland, OR

I'm having similar problems but in opposite direction. My transfer from XP -> SMB is 200KB/s and 340Mbps when from SMB -> XP. The same thing happens to rsync. FTP is fast both ways and WinSCP isn't super fast, but it beats SMB on the upload.

hornett · Tux's lil' helper Joined: 12 Aug 2004 Posts: 84

Try boshing "socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192" into your global section in smb.conf if you don't have it already.

meulie · Posted: Thu Sep 20, 2007 12:41 pm Post subject:

hornett · Tux's lil' helper Joined: 12 Aug 2004 Posts: 84

I meant you, meulie

But there shouldn't be any harm in it for anybody to try

meulie · Posted: Thu Sep 20, 2007 6:49 pm Post subject:

I haven't had a chance yet to test if myself, but I heard from one of the users that it has made an impressive improvement!

I will check this weekend and confirm/deny, but so far: thanks! :-)

_________________
Greetz,
Evert Meulie

gaga · Apprentice Joined: 27 Apr 2005 Posts: 288

I have the same pb but without any Windows system

(server Debian) => (my computer Gentoo) ~ 200 Ko/s ( pfff )
(my computer Gentoo) => (server Debian) ~ 50 Mo/s

EDIT : there is something strange : when I make two thing at the same time, the speed is normal (~ 30 Mo/s) !! :?:

why a so slow speed in a unique download ???????

I have a gigabit connection, Samba version 3.0.24 on both machine
If someone has a idea.....

thank you !

Wire64 · n00b Joined: 30 Aug 2007 Posts: 10

I have the same problem.
The funny thing is when i download/upload something on my gentoo box my transferspeed goes to +/-max
it seems that my transfers speed up when i put my network card under stress.
Is there some sort of idle setting for the network card?
I believe its driver related and not samba related though samba is the only application suffering from it.

Settings for eth0 (RTL8169s/8110s):
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
Link detected: yes

meulie · Posted: Sat Sep 29, 2007 3:10 pm Post subject:

gaga · Apprentice Joined: 27 Apr 2005 Posts: 288

excuse me I didn't understand the problem

you think it's the driver of my network card which make this strange speed ?
I have a r8169 but why can I upload and download at 50Mo/s with scp ??

I think it's more a samba's problem....... wrong ?

do you solve the problem ?

(excuse my bad explaination and vocabulary, I'm a French.... I learn )

thks

meulie · Posted: Sat Sep 29, 2007 9:19 pm Post subject:

If you have the same ethernet chip as I do, you may want to try the alternative driver. It fixed problems for me on 100Mbit level (don't have gigabit here, so I can't test that...)
_________________
Greetz,
Evert Meulie