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SUSE9.1 Peculiar Gigabit Lan performance.

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Operating Systems Linux SUSE9.1 Peculiar Gigabit Lan performance.
# 1  
Old 01-08-2005
SUSE9.1 Peculiar Gigabit Lan performance.
I'm having some peculiar performance issues with my Gigabit Lan.

I have some 100Mb devices so I can't do the necessary "jumbo Frame" tweaks for absolute optimum performance as I'd prevent them access.

I'm getting appauling transfer rates sending files to the linux machine, around 10 Mbps 3% utilization (off the top of my head). However, the second I download from the internet using the Linux machine whilst simultaneously sending files to it I get a very heathy 200mbps+.

Every time I have some files to transfer I now find that I have to set the Linux machine downloading a huge file off the net just so I can get the increased local network performance.

Anyone know how I can get this performance increase without connecting to the net?

Thanks for any pointers,

Mark.
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LEARN ABOUT OPENSOLARIS

sge

SGE(4)							   BSD Kernel Interfaces Manual 						    SGE(4)

NAME

     sge -- Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device miibus
	   device sge

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   if_sge="YES"

DESCRIPTION

     The sge device driver provides support for SiS190 Fast Ethernet controllers and SiS191 Fast/Gigabit Ethernet controllers.

     All LOMs supported by the sge driver have TCP/UDP/IP checksum offload for transmit and receive, TCP segmentation offload (TSO), hardware VLAN
     tag stripping/insertion features.	Due to lack of documentation Wake On Lan (WOL), Jumbo frame and an interrupt moderation mechanism are not
     supported yet.

     The sge driver supports the following media types:

     autoselect   Enable autoselection of the media type and options.  The user can manually override the autoselected mode by adding media
		  options to rc.conf(5).

     10baseT/UTP  Set 10Mbps operation.

     100baseTX	  Set 100Mbps (Fast Ethernet) operation.

     1000baseTX   Set 1000baseTX operation over twisted pair.

     The sge driver supports the following media options:

     full-duplex  Force full duplex operation.

     half-duplex  Force half duplex operation.

     For more information on configuring this device, see ifconfig(8).

HARDWARE

     The sge device driver provides support for the following Ethernet controllers:

     o	 SiS190 Fast Ethernet controller
     o	 SiS191 Fast/Gigabit Ethernet controller

SEE ALSO

     altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), rgephy(4), vlan(4), ifconfig(8)

HISTORY

     The sge driver was written by Alexander Pohoyda <alexander.pohoyda@gmx.net>.  And enhanced by Nikolay Denev <ndenev@gmail.com>.  It first
     appeared in FreeBSD 8.1.

BSD
								 January 16, 2011							       BSD