[CSE]  Advanced Operating Systems 
  COMP9242 2002/S2  		UNSW
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Next: Conclusions Up: 05-uk Previous: Case in Point: LLinux [Härtig

Subsections

L\(\!^4\)Linux Performance


Microbenchmarks:

System Time [\(\mu\)s] Cycles
Linux 1.68 223
L\(\!^4\)Linux 3.95 526
L\(\!^4\)Linux (trampoline) 5.66 753
MkLinux in-kernel 15.66 2050
MkLinux server 110.60 14710

getpid() on 133MHz Pentium

Cycle breakdown:

Client Cycles Server
enter emulation lib 20  
send syscall message 168 wait for msg
  131 Linux kernel
receive reply 188 send reply
leave emulation lib 19  

Hardware cost: 82 cycles

Macrobenchmarks: lmbench

h+_97_f6

Macrobenchmarks: Kernel compile

h+_97_f7


Gernot Heiser 2002-08-28