Re: Performance problem using Intel X520-DA2

On 24.01.2012 00:34, Vlad Galu wrote:
> --
> Good, fast and cheap: pick any two.
>
>
> On Monday, January 23, 2012 at 8:20 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. I've 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.
>>
>> I'm 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
>>
>
> Hi Marcin,
>
> Have a look at Luigi's excellent netmap framework [1].
>
> [1] http://info.iet.unipi.it/~luigi/netmap/

  Hi Vlad,

I tried to compile the kernel with NETMAP on FreeBSD 8 and 9, but I get 
warnings and
the compilation ends.

cc1: warnings being treated as errors
../../../dev/netmap/netmap.c: In function 'netmap_memory_init':
../../../dev/netmap/netmap.c:1557: warning: format '%d' expects type 
'int', but argument 7 has type 'size_t'
../../../dev/netmap/netmap.c:1564: warning: format '%d' expects type 
'int', but argument 7 has type 'size_t'
../../../dev/netmap/netmap.c: In function 'netmap_memory_fini':
../../../dev/netmap/netmap.c:1607: warning: format '%d' expects type 
'int', but argument 2 has type 'size_t'
../../../dev/netmap/netmap.c: In function 'netmap_init':
../../../dev/netmap/netmap.c:1636: warning: format '%d' expects type 
'int', but argument 2 has type 'size_t'
*** Error code 1

I'll try HEAD and see if it will be the same.

-- 
Marcin Markowski

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