Hello, finally got some time to test...
Table w. 214k routes with full rDoS on two intrefaces on 2 x AMD64 processors,
speed 2814.43 MHz. Profiled with CPU_CLK_UNHALTED and rtstat
w/o latest patch fib_trie pathes. Tput ~233 kpps
samples % symbol name
109925 14.4513 fn_trie_lookup
109821 14.4376 ip_route_input
87245 11.4696 rt_intern_hash
31270 4.1109 kmem_cache_alloc
24159 3.1761 dev_queue_xmit
23200 3.0500 neigh_lookup
22464 2.9532 free_block
18412 2.4205 kmem_cache_free
17830 2.3440 dst_destroy
15740 2.0693 fib_get_table
With latest patch fib_patches.(Stephens others) Same throughput
~233 kpps but we see a different profile. Why we don't get any
better better throughput is yet to be understand (the drops in
qdisc could be the cause) more analysis needed
79242 14.3520 ip_route_input
65188 11.8066 fn_trie_lookup
64559 11.6927 rt_intern_hash
22901 4.1477 kmem_cache_alloc
21038 3.8103 check_leaf
16197 2.9335 neigh_lookup
14802 2.6809 free_block
14596 2.6436 ip_rcv_finish
12365 2.2395 fib_validate_source
12048 2.1821 dst_destroy
fib_hash thoughput ~177 kpps
Hard work for fib_hash here as we have many zones.
it can be fast with less zines.
200568 37.8013 fn_hash_lookup
58352 10.9977 ip_route_input
44495 8.3860 rt_intern_hash
12873 2.4262 kmem_cache_alloc
12115 2.2833 rt_may_expire
11691 2.2034 rt_garbage_collect
10821 2.0394 dev_queue_xmit
9999 1.8845 fib_validate_source
8762 1.6514 fib_get_table
8558 1.6129 fib_semantic_match
Cheers
--ro
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