null syscall latencies rock in 2.1.5 :)
Ingo Molnar (mingo@pc5829.hil.siemens.at)
Sat, 19 Oct 1996 12:14:39 +0100 (MET)
2.0.21 getpid(): 219 cycles
2.1.5 getpid(): 158 cycles [on a 100MHz P54C+Neptun, hot caches]
^------- read: 1.5 usecs!
this is a 28% improvement! Great work Linus! :)
[ the hardware interrupt gate from ring 3 to ring 0 [and back] itself
accounts for 85 cycles ... really awesome numbers! ]
-- mingo