zkusit nastavit r2q na 1 nebo rovnou u trid nastavit quantum na neco rozumneho

nastavit rate na 90-95% fyzicke rychlosti

mozna si taky pohrat s burst/cburst

http://www.docum.org/docum.org/faq/cache/31.html

You can easily achieve 600k pps on AMD 64 x2 5200 with mean 70% cpu
utilization at peek hours. You must bind irqs of nics to different
cores (look in /proc/irq/NUM/smp_affinity) to achieve symmetric load
of both cores (sometimes its difficult).