Hello c-nsp, We are running c7200 vxr with NPE-G2, but are seeing way to high CPU usage (85%) at only 225kPPS in+out.
It _seems_ it's due to the fact we're using a POS interface. I _guess_, the G2, when using GigE interface, is doing a mixed interrupt/polling mode for processing each packets. (like linux NAPI: above a certain PPS value, the driver switch from interrupt to polling mode). It's a guess. But the CPU usage is for sure much lower when using only the 3 GigE embeded on the mainboard. Keeping interrupt only processing for POS, which may be used to switch voice traffic, has some rational behind it. But we're using it only to switch data/ip, and I'm wondering if there's a way to lower the CPU usage despite using POS? like a switch to enable mixed interrupt/polling driver on the POS? would be highly helpfull. regards. -- Philippe Strauss av. de Beaulieu 25 1004 Lausanne http://philou.ch _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/