Wow, thx for the quick answer.
I just use the provided script
(drivers/DNA/ixgbe-3.10.16-DNA/src/load_dna_driver.sh) to load the drivers. In
short it does:
insmod ../../../../kernel/pf_ring.ko
insmod ./ixgbe.ko RSS=1,1,1,1
ifconfig dna1 up
bash ../scripts/set_irq_affinity.sh ${IF[index]}
The sysadmin has forbidden me to install these drivers permanently so there's
nothing in /etc/modprobe/*.conf
Martin
On Thu, Mar 14, 2013 at 05:44:48PM +0000, Craig Merchant wrote:
> Martin,
>
> I'm running pfdnacluster_master on an interface that averages between 3-10
> Gbps. The traffic is copied to 28 queues (0-27). The 28th queue contains a
> copy of all of the traffic. I don't have any issues with packets being
> dropped.
>
> How are you initializing the ixbe and pf_ring drivers in your
> /etc/modprobe.d/*.conf file? Mine looks something like:
>
> options igb RSS=8,8
> options ixgbe MQ=0,0 num_rx_slots=32768
> options pf_ring min_num_slots=65536 transparent_mode=1
> install ixgbe /sbin/modprobe pf_ring $CMDLINE_OPTS; /sbin/modprobe
> --ignore-install ixgbe $CMDLINE_OPTS
>
> How are you bringing up the interface? I'm using DNA/Libzero for Snort, so I
> bring up the interface in the Snort init script with something like:
>
>
> function adapter_settings() {
> ifconfig dna0 up promisc
> ethtool -K dna0 tso off &>/dev/null
> ethtool -K dna0 gro off &>/dev/null
> ethtool -K dna0 lro off &>/dev/null
> ethtool -K dna0 gso off &>/dev/null
> ethtool -G dna0 tx 32768 &>/dev/null
> ethtool -G dna0 rx 32768 &>/dev/null
> }
>
> Thanks.
>
> Craig
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Martin Kummer
> Sent: Thursday, March 14, 2013 10:24 AM
> To: [email protected]
> Subject: [Ntop-misc] libzero performance
>
> Hi everyone.
>
> For my bachelor thesis I'm modifying Vermont
> (https://github.com/constcast/vermont/wiki) to use PF_RING/libzero instead of
> pcap.
>
> To test libzero I used one of the examples on the website: On one host I used
> pfdnacluster_master and pfcount. From another host I sent 100M packets at
> 10Gbps. (ca. 12Mpps)
>
> There are two issues:
> • When I use just one slave (pfdancluster_master [...] -n 1) the performance
> is very good. I get about 99% of the packets. When I split the data between
> two slaves that number drops to about 90%. The last line of
> "pfdnacluster_master -n 2" output:
> Absolute Stats: RX 90'276'085 pkts [2'314'438.07 pkt/sec] Processed
> 90'276'085 pkts [2'314'438.07 pkt/sec] The more slaves, the lower the RX
> value gets.
>
> • Even with just one slave pfdnacluster_master uses almost 100% of a CPU
> core. While not yet a problem for me, this is likely to be the next
> bottleneck.
>
> Is there a way to increase the performance of a dnacluster, when there are
> several slaves?
>
> The software used:
> - the current svn chockout of ntop
> - the DNA ixgbe driver by ntop
>
> The hardware used:
> - Core i7-3930K (6C, HT, 3.2 GHz)
> - Ethernet controller: Intel Corporation 82599EB 10-Gigabit SFI/SFP+ Network
> Connection (rev 01)
> Subsystem: Intel Corporation Ethernet Server Adapter X520-2
>
> best regards,
> Martin
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