From: Daniel Borkmann <dan...@iogearbox.net> Date: Wed, 16 Aug 2017 00:12:58 +0200
> On 08/15/2017 09:34 PM, Edward Cree wrote: >> State of a register doesn't matter if it wasn't read in reaching an >> exit; >> a write screens off all reads downstream of it from all >> explored_states >> upstream of it. >> This allows us to prune many more branches; here are some processed >> insn >> counts for some Cilium programs: >> Program before after >> bpf_lb_opt_-DLB_L3.o 6515 3361 >> bpf_lb_opt_-DLB_L4.o 8976 5176 >> bpf_lb_opt_-DUNKNOWN.o 2960 1137 >> bpf_lxc_opt_-DDROP_ALL.o 95412 48537 >> bpf_lxc_opt_-DUNKNOWN.o 141706 78718 >> bpf_netdev.o 24251 17995 >> bpf_overlay.o 10999 9385 >> >> The runtime is also improved; here are 'time' results in ms: >> Program before after >> bpf_lb_opt_-DLB_L3.o 24 6 >> bpf_lb_opt_-DLB_L4.o 26 11 >> bpf_lb_opt_-DUNKNOWN.o 11 2 >> bpf_lxc_opt_-DDROP_ALL.o 1288 139 >> bpf_lxc_opt_-DUNKNOWN.o 1768 234 >> bpf_netdev.o 62 31 >> bpf_overlay.o 15 13 >> >> Signed-off-by: Edward Cree <ec...@solarflare.com> > > Acked-by: Daniel Borkmann <dan...@iogearbox.net> Applied, nice work Edward.
