Optimization #3637
openPerformance impact of Cisco Fabricpath
Description
At some setups we see Cisco Fabricpath Traffic (ethertype 0x8903) that results in rather high drop rates even though the traffic is not responsible for much load. With a bpf filter to that protocol the issue was gone.
Files
Updated by Victor Julien about 3 years ago
Do you have more info about what you're seeing? Any decoder events, perf stats, etc?
Updated by Andreas Herz about 3 years ago
- File 813_a.txt 813_a.txt added
- File 813_b.txt 813_b.txt added
- File d11_a.txt d11_a.txt added
- File d11_b.txt d11_b.txt added
- File perftop.png perftop.png added
Two systems with no filter active (case a) and bpf filter active (case b). Also a perf top from those machines running without the bpf filter. The left one is another machine with low traffic and not that much traffic at all but quite some amount of it being cisco fabric path.
Updated by Peter Manev about 3 years ago
Out of curiosity - any chance of knowing whats the "unknown" function on top of the leftmost pertop?
Updated by Andreas Herz about 3 years ago
Peter Manev wrote in #note-3:
Out of curiosity - any chance of knowing whats the "unknown" function on top of the leftmost pertop?
I didn't had a change to find it yet, when I zoom in I see nothing. I agree that this is rather strange.
Updated by Peter Manev about 3 years ago
Btw - there are some functions/calls that can be unknown , just havn't seen an "unknown" with so high usage - was my point.