Re: Pathological case identified from contest

[Con Kolivas <conman@kolivas.net>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Sun, 20 Oct 2002 01:05 pm, Andrew Morton wrote:
> Con Kolivas wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On Thu, 17 Oct 2002 05:35 pm, you wrote:
> > > Con Kolivas wrote:
> > > > ...
> > > > Well this has become more common with 2.5.43-mm2. I had to abort the
> > > > process_load run 3 times when benchmarking it. Going back to other
> > > > kernels and trying them it didnt happen so I dont think its my
> > > > hardware failing or something like that.
> > >
> > > No, it's a bug in either the pipe code or the CPU scheduler I'd say.
> > >
> > > You could try backing out to the 2.5.40 pipe implementation; not sure
> > > if that would tell us much though.
> >
> > I massaged the patch a little for it to apply and  it _is_ the offending
> > code. Backing out the pipe changes fixed the problem. I was unable to
> > reproduce the holdup I was seeing with process_load even at higher data
> > sizes. Now what?
>
> Try Manfred's pipe fix I guess?
>

Well *that* makes sense. Tried it and it fixed it thank you.

Cheers,
Con
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQE9skzBF6dfvkL3i1gRAtbyAKCg6bIWNnEbZeFnRT2mcS7TkkBtsQCfatyT
m4Q37qYkOZ389DlcvluL9vA=
=PXfw
-----END PGP SIGNATURE-----