DragonFly bugs List (threaded) for 2007-07
DragonFly BSD
DragonFly bugs List (threaded) for 2007-07
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Re: the evil interrupt stats monster is still around!

From: "Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>
Date: Sat, 28 Jul 2007 03:47:29 +0200

Simon 'corecode' Schubert wrote:
while doing the pkgsrc bulk build, I get weird numbers in top. I am pretty sure this has something to do with the multitude of shell scripts being used as wrappers in pkgsrc. command execution is also slower than I'd expect (for example wrapper execution).

Okay, joerg and me could speed pkgsrc building up a bit by telling pkgsrc to use the builtin for test and [.

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)

5ms seems to be a good estimate for fork performance. but mind you, that's the child which is taking longer. This means the parent returns *first*, then starts wait4'ing (usually, or blocks on a read or so), then some time passes and then *later* the child returns from fork. Seems wrong to me.

so much statistics for now, cheers

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