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Unable to find why application is loosing CPU causing network traffic drop

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linux-howto

http://www.linuxquestions.org – Hi, I am running kernel 3.2.37 on RHEL 6.3. My application is using DPDK Poll Mode Driver from Intel to receive high throughput traffic on 10 G interface. Since I want to provide all the CPU time on the core to the application, I have used 1) CPUSET to keep off any processes that scheduler may allot to the core that is running my APP. 2) Explicitly taskset to pin the application to the core. 3) reniced the priority to -20 to make sure the app is running at high priority. 4) IRQ_AFFINITY_MASK is set in /etc/sysconfig/irqbalance to avoid scheduler rebalance any irq's on the core that I am ru (HowTos)