[Oisf-users] Tuning Suricata (2.0beta1) -- no rules and lots of packet loss

Cooper F. Nelson cnelson at ucsd.edu
Wed Aug 21 20:10:52 UTC 2013


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I looked at your attached /proc/interrupts file; something is definitely
off as it looks like the the first RX queue for each interface is still
bound to core-0:

> grep TxRx-1$ Suricata-proc-interrupts.txt
>  127:,    64, 76049,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0    1674293,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0   PCI-MSI-edge, eth6-TxRx-1
>  161:,    59    1766722,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0   PCI-MSI-edge, eth4-TxRx-1
>  178:,    38, 73976,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0    1682548,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0,,0   PCI-MSI-edge, eth5-TxRx-1

Have you tried restarting irqbalance via "/etc/init.d/irqbalance
restart" after loading the driver?

On 8/21/2013 11:51 AM, Tritium Cat wrote:
> 
> In theory irqbalance should work fine and set_irq_balance is only needed if
> one wanted to bind all packet processing of a flow from a queue to a
> dedicated core, as mentioned somewhere in the available Suricata 10G
> strategies; that's another area I'm not sure I setup correctly but I do not
> believe it is the cause of the performance issues.
> 


- -- 
Cooper Nelson
Network Security Analyst
UCSD ACT Security Team
cnelson at ucsd.edu x41042
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