> hpa@transmeta.com (H. Peter Anvin) writes:
> > By author: "Michael O'Reilly" <michael@metal.iinet.net.au>
> > >
> > > There's a simple reason for all this. The Sysvinit does a sync() in
> > > it's main loop. So every time it gets a SIGCHLD from a process w/o a
> > > parent dying, it does a sync(), which flushes all the dirty buffers
> > > (including atime mods), and voilo! Tons of disk writing.
> > >
> >
> > WHY???
> >
> > -hpa
>
> No idea. :) Belive me, next reboot that's one patch that's going in
> fast.
[SNIP]
True. But if you write a "normal" program. There is no such disk
access..........
main() {
int i;
if(fork())
wait(&i);
}
When the parent waits for the child, there is no sync() after it exits.
Try it. You'll see.
Cheers,
Dick Johnson
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Richard B. Johnson
Project Engineer
Analogic Corporation
Voice : (508) 977-3000 ext. 3754
Fax : (508) 532-6097
Modem : (508) 977-6870
Ftp : ftp@boneserver.analogic.com
Email : rjohnson@analogic.com, johnson@analogic.com
Penguin : Linux version 2.1.27 on an i586 machine (66.15 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.
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