Re: the evil interrupt stats monster is still around!

["Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>]

Simon 'corecode' Schubert wrote:
> However, look at this:
>
> avg fork parent: 0.000148
> avg fork child: 0.004091
>
> (rough rough numbers, will be off if there are multiple processes 
> running concurrently)

Okay, less rough numbers:

122991  104/s   fork

avg fork parent: 0.000157
avg fork child: 0.002563

so if we assume that the parent always waits for the child, it'll take 0.267 seconds per second (in average) to fork?  That means 1/4 of the time is just spent until the child start running.

the above numbers include vfork, these are without:

avg fork parent: 0.000144
avg fork child: 0.002556

same, basically.  Maybe teaching sh(1) to use vfork could give some performance improvement?

cheers
 simon

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