In the last VPP call, I reported some internal Red Hat performance testing
was showing a significant drop in performance between releases 17.04 to
17.07. This with l2-bridge testing - PVP - 0.002% Drop Rate:
VPP-17.04: 256 Flow 7.8 MP/s 10k Flow 7.3 MP/s 1m Flow 5.2 MP/s
VPP-17.07: 256 Flow 7.7 MP/s 10k Flow 2.7 MP/s 1m Flow 1.8 MP/s
The performance team re-ran some of the tests for me with some additional
data collected. Looks like the size of the L2 FIB table was reduced in
17.07. Below are the number of entries in the MAC Table after the tests are
run:
17.04:
show l2fib
4000008 l2fib entries
17.07:
show l2fib
1067053 l2fib entries with 1048576 learned (or non-static) entries
This caused more packets to be flooded (see out of 'show node counters'
below). I looked but couldn't find anything. Is the size of the L2 FIB
Table table configurable?
Thanks,
Billy McFall
17.04:
show node counters
Count Node Reason
:
313035313 l2-input L2 input packets
555726 l2-flood L2 flood packets
:
310115490 l2-input L2 input packets
824859 l2-flood L2 flood packets
:
313508376 l2-input L2 input packets
1041961 l2-flood L2 flood packets
:
313691024 l2-input L2 input packets
698968 l2-flood L2 flood packets
17.07:
show node counters
Count Node Reason
:
97810569 l2-input L2 input packets
72557612 l2-flood L2 flood packets
:
97830674 l2-input L2 input packets
72478802 l2-flood L2 flood packets
:
97714888 l2-input L2 input packets
71655987 l2-flood L2 flood packets
:
97710374 l2-input L2 input packets
70058006 l2-flood L2 flood packets
--
*Billy McFall*
SDN Group
Office of Technology
*Red Hat*
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