I had another opportunity to debug the high cpu usage on the 3550-12t. show proc cpu indicated that cpu load was 39% interrupt, 40% total
So it's definitively a high interrupt rate that is using up the cpu. I also debugged the switching mechanism, and although I have high amounts of TTL-expired events, they only occur at a rate of 2-3 per second. I proceeded to profile the cpu usage with: profile <start> <end> <granularity> profile start ... 10 mins later profile stop show profile terse Granularity was 8 due to the largest free block being about half the size of the main:text section. This gave me a listing of all the memory ranges and a count of how many times the cpu was found to be in that memory location. System Total = 000141506 Interrupt Total = 000056163 (39 percent) Sched Total = 000094547 (66 percent) Interrupt [00] = 000056163 (39 percent) The interrupt breakdown is (top 3): 0x475F50 with 3281 counts (~5.4 per sec.) 0x4B82B8 with 1667 counts (~2.7 per sec) 0x4B8F90 with 1456 counts (~2.4 per sec) My question is: How do I convert those memory addresses into something that would tell me what interrupts are being triggered so much? Thank you, Hector _______________________________________________ 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/
