FreeBSD 8.0 ixgbe Poor Performance
ssanders at softhammer.net
Wed Apr 21 19:52:37 UTC 2010
I'd be most pleased to get near 9k.
I'm running FreeBSD 8.0 amd64 on both of the the test hosts. I've reset
the configurations to system default as I was getting no where with
sysctl and loader.conf settings.
The motherboards have been configured to do MSI interrupts. The
S5000PAL has a MSI to old style interrupt BIOS setting that confuses the
driver interrupt setup.
The 10Gbps cards should be plugged into the 8x PCI-E slots on both
hosts. I'm double checking that claim right now and will get back later.
On 4/21/2010 2:13 PM, Jack Vogel wrote:
> When you get into the 10G world your performance will only be as good
> as your weakest link, what I mean is if you connect to something that has
> less than stellar bus and/or memory performance it is going to throttle
> Running back to back with two good systems you should be able to get
> near line rate (9K range). Things that can effect that: 64 bit kernel,
> TSO, LRO, how many queues come to mind. The default driver config
> should get you there, so tell me more about your hardware/os config??
> On Wed, Apr 21, 2010 at 8:04 AM, Brandon Gooch
> <jamesbrandongooch at gmail.com>wrote:
>> On Wed, Apr 21, 2010 at 9:32 AM, Stephen Sanders
>> <ssanders at softhammer.net> wrote:
>>> I am running speed tests on a pair of systems equipped with Intel 10Gbps
>>> cards and am getting poor performance.
>>> iperf and tcpdump testing indicates that the card is running at roughly
>>> 2.5Gbps max transmit/receive.
>>> My attempts at turning fiddling with netisr, polling, and varying the
>>> buffer sizes has been fruitless. I'm sure there is something that I'm
>>> missing so I'm hoping for suggestions.
>>> There are two systems that are connected head to head via cross over
>>> cable. The two systems have the same hardware configuration. The
>>> hardware is as follows:
>>> 2 Intel E5430 (Quad core) @ 2.66 Ghz
>>> Intel S5000PAL Motherboard
>>> 16GB Memory
>>> My iperf command line for the client is:
>>> iperf -t 10 -c 220.127.116.11 -w 2.5M -l 2.5M
>>> My TCP dump test command lines are:
>>> tcpdump -i ix0 -w/dev/null
>>> tcpreplay -i ix0 -t -l 0 -K ./test.pcap
>> If you're running 8.0-RELEASE, you might try updating to 8-STABLE.
>> Jack Vogel recently committed updated Intel NIC driver code:
>> freebsd-performance at freebsd.org mailing list
>> To unsubscribe, send any mail to "
>> freebsd-performance-unsubscribe at freebsd.org"
> freebsd-performance at freebsd.org mailing list
> To unsubscribe, send any mail to "freebsd-performance-unsubscribe at freebsd.org"
More information about the freebsd-performance