Many thanks for the help Alfredo. So I'll crank things up to use all CPU's and that gives me (I've converted it to a for loop):
for i in `seq 0 1 48`; do snort -q --pid-path /var/run --create-pidfile -D -c /etc/snort/snort.conf -l /logs/snort/eth4_eth5/instance-$1 --daq-dir=/usr/local/lib/daq --daq pfring_zc --daq-mode passive -i zc:eth4@$1,zc:eth5@$1 --daq-var clusterid=$1 --daq-var idsbridge=1 --daq-var bindcpu=$1 done Is this the correct load_driver.sh setting to match? I'm not sure about the MQ values? insmod ./ixgbe.ko MQ=1,1,1,1 RSS=48,48,48,48 On 2 December 2015 at 14:15, Alfredo Cardigliano <[email protected]> wrote: > Please use README.1st as reference. > What you need to know: > 1. Use --daq-var clusterid=K where K is a unique number per snort > instance, used for resource allocation > 2. Use --daq-var bindcpu=K where K is the core id for affinity, please > ignore interrupts affinity with ZC > 3. Use “,” in -i in please of “+” for interfaces aggregation, “+” is used > for IPS/IDS-bridge mode > 4. We usually recommend using only the CPU where the NIC is connected, > however since snort is (likely) the bottleneck, feel free to use all the > cores available, setting RSS=N,N where N is the number of cores and the > number of snort instances. > > Alfredo > > On 02 Dec 2015, at 15:08, James <[email protected]> wrote: > > Follow-up question - should I use the cluster-id parameter? > > This uses it: > > https://svn.ntop.org/svn/ntop/trunk/attic/PF_RING/userland/snort/pfring-daq-module-zc/README.1st > > But this does not: > http://www.ntop.org/pf_ring/accelerating-snort-with-pf_ring-dna/ > > On 2 December 2015 at 14:01, James <[email protected]> wrote: > >> Hi all, >> >> I posted a few weeks ago and have since got pf_ring with ZC working. I'm >> now trying to decide how best to configure snort (in IDS mode). My server >> has 4 X 12 core CPU's and two NIC's which are being fed one half each of a >> 10Gb connection. >> >> I have a few key questions: >> - Within the ixgbe zc load_drive.sh script, would the default 16 queue >> option do, or would you choose something different: insmod ./ixgbe.ko >> MQ=1,1,1,1 RSS=16,16,16,16 >> >> - Assuming the choice of 16 above, should I start 16 copies of Snort like >> this (variation on the example from ntop website)? >> snort -q --pid-path /var/run --create-pidfile -D -c /etc/snort/snort.conf >> -l /var/log/snort/eth4_eth5/instance-1 --daq-dir=/usr/local/lib/daq --daq >> pfring_zc --daq-mode passive -i zc:eth4@0+zc:eth5@0 --daq-var >> idsbridge=1 --daq-var bindcpu=0 >> >> The information on http://www.metaflows.com/features/pf_ring about CPU >> affinity and interrupts has confused me somewhat. >> >> Thanks >> J. >> > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc > > > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc >
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