On 05/08/2010 01:53 PM, Jack Vogel wrote:
I still am not clear on this system, how many ports are on it, and its
an 82576?
Sounds to me like you've proven its not on the box if you can do fine
when its
on its own. So change ports in the switch, as I said, change cables, must be
something in that environment.
Jack
On Sat, May 8, 2010 at 10:04 AM, joe <[email protected]
<mailto:[email protected]>> wrote:
On 05/08/2010 01:31 PM, Jack Vogel wrote:
Looks like something to do with system C, you might isolate it,
and try
a back
to back connection with its NICs, change cables, look at BIOS
settings,
change
the slot the nic is in... All just off the top of my head.
Jack
On Sat, May 8, 2010 at 9:41 AM, joe <[email protected]
<mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>>
wrote:
On 05/08/2010 11:17 AM, Ian FREISLICH wrote:
joe wrote:
On 05/08/2010 06:55 AM, Ian FREISLICH wrote:
joe wrote:
I have just tried your suggeston and
it has
no effect for me ;(
Do you have another brand of NIC that you can
try? At
least that
will isolate whether it's igb(4) or something else.
I will grab a new nic today and try...my options are
limited
though.
Here are the nics i can get my hands on
TP-LINK TL-TG3468, 10/100/1000Mbps PCIe Adapter
(supported
by fbsd?)
Based on the RTL8168B chip. Should be supported by the
re(4)
driver.
Intel (EXPI9301CT) Gigabit CT Desktop Adapter (yet
another
intel nic)
i82574L chip. Should be supported by the em(4) driver.
I have had
good performance in the past with this driver and less than
satisfactory performance with the igb(4) driver.
That may not be your problem though. Before you go out
and buy,
have a look at the amount of interrupt time your slow
machine spends
in 'top' or 'systat -vm'. systat will also show the
interrupt rate
for each driver, perhaps it's not doing interrupt moderation
properly.
This will manifest as more than about a 1000 per second.
There are
loader tunables for the driver to increase the number of
transfer
descriptors and to tune interrupt moderation.
You could try running trafshow (port) on the interface while
performing the transfer. Perhaps promiscuous mode will
turn off
some hardware feature that will improve things. It may
however
break hardware vlanning as it does on my 82575GB 4 port
igb card.
Ian
--
Ian Freislich
I bought those two cards anyways, im in a rush to figure out
this
problem. That being said i am still encountering the exact same
problem regardless on which network card i am running. I am at a
complete loss. I am about to try a raid card to see if the
problem
might lay within the onboard sata ports. I did pull the
server and
brought it home so that i can test more things quicker.
I am going to try using a raid card instead of the onboard sata
ports and see if i still encounter the same problem. I would
love
any suggestions you may have on where to go from here to
figure out
where the problem might be.
joe
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I think it might have something to so with the nics / switch, and
their features. I brought the box home, plugged into my gb switch,
and i am able to FTP data to the server at around 35MB/sec.
I dont know what would cause this other than some sort of issue with
the the 3 different types of nics and the switch i am using.
Any suggestions?
There are two embedded intel 82576 nics on this motherboard. I do
believe i have proven it is not the box itself as it is capable of high
incoming throughput. I have other servers on the switch which do
55MB/sec without issues. I believe it is a combination of this server
and/or the nics i have and the switch i am using. It's the only logical
explanation if i get the desired throughput on my home switch but not on
the switch that is collocated. I will try updating the firmware of the
switch tonight as well as bringing the switch i use at home with me.
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