=== ENV ===
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
lp0: flags=808851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST,PROXY> metric 0 mtu 65535
	inet 10.99.0.1 --> 10.99.0.2 netmask 0xff000000
=== A. port I/O cost under KVM (root) ===
inb(0x379): 100000 ops in 1075.6 ms => 10.76 us/op (last=0xd8)
outb(0x378): 100000 ops in 1036.1 ms => 10.36 us/op
=== B. control: lo0, 5 x 1400B (unpriv) ===
RESULT: n=5 size=1400 dst=127.0.0.1 TOTAL=0.1 ms AVG=0.0 ms MAX=0.0 ms
=== C. lp0: sendto returns instantly (async netisr does the spin) ===
RESULT: n=5 size=1400 dst=10.99.0.2 TOTAL=0.1 ms AVG=0.0 ms MAX=0.0 ms
=== D. bounded flood: 40 pkts by unpriv user; rate check ===
17:03:44
lp0     65535 <Link#3>                             0  6132          0        0  3066          0     0
RESULT: n=40 size=1400 dst=10.99.0.2 TOTAL=0.8 ms AVG=0.0 ms MAX=0.0 ms
lp0     65535 <Link#3>                             0  6153          0        0  3076          0     0
17:03:45
=== E. cpu breakdown during a short flood ===
--procs-- ---memory-- -------paging------ --disks-- -----faults------ ---cpu---
  r   b w   fre   flt   re   pi   po   fr  vb0  md0   int   sys   ctx us sy id
  1   0 0 3.22G     1    0    0    0    0    0    0 1.25K    13   573  0 16 84
  1   0 0 3.22G     7    0    0    0    0    0    0 1.27K    13   574  0 17 83
=== F. totals after ===
lp0     65535 <Link#3>                             0  6237          0        0  3118          0     0