Re: (Off-topic) Real-Time kernels on ARM

[Philip Blundell]

>> bash-2.01# ./lat_syscall null
>> Simple syscall: 0.6472 microseconds
>>
>       Whats it do? The L4 Null syscall (get_my_id) is much less then IPC
>:)

The lmbench `null' syscall is getpid() or something similar.  So it's pretty 
close to measuring the raw system call overhead.  On a NetWinder it's about 
0.48us, for interest's sake.

p.


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