Hi Jack,
Thank You for Your answer.
I forgot to mention that if the program will run for more than 30-40
sec.
server loses connection to the internet. I'm not sure if problem isnt
with MSI-X, because NIC (82575EB - igb driver) used for the internet is
also
using MSI-X. Disabling MSI-X for ixgbe or switching on old NIC
(82571EB - em driver) fixes issue (I'm unable to disable MSI-X on
igb because the watchdog resets the card if using only MSI).
--
Marcin Markowski
On 23.01.2012 21:25, Jack Vogel wrote:
There may be some interrupt handling changes coming, but at least for
the moment you need to increase the storm threshold, or set it to 0
to
disable it.
Jack
On Mon, Jan 23, 2012 at 12:20 PM, Marcin Markowski wrote:
Hello,
We use FreeBSD as sniffer (libpcap programs) and we experience
performance problems when incoming traffic is greater than
7.5Gbps/s.
If we check top we see that first irq from network card is using
100% CPU. Ive tested this on FreeBSD 8.2-RELEASE and 9.0-RELEASE
(on 9.0 we can see also kernel thread named {ix0 que} using 100%
CPU),
and both systems behave the same. In logs we see also:
interrupt storm detected on "irq268:"; throttling interrupt source
Our server platform is Intel SR2600URBRP, 2x Xeon X5650, 6GB RAM
and
NIC Intel X520-DA2.
Im not sure if problem is with NIC or motherboard in SR2600URBRP,
because everything is fine when we use other server configuration:
Intel SR1630GP, 1x Xeon X3450, 8GB RAM, NIC X520-DA2
My /boot/loader.conf:
kern.ipc.nmbclusters=262144
hw.ixgbe.rxd=2048
hw.ixgbe.txd=2048
hw.ixgbe.num_queues=16
/etc/sysctl.conf
hw.intr_storm_threshold=10000
--
Marcin Markowski
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