Subject: Re: Slow crash dump performance
To: Matthias Scheler <tron@zhadum.de>
From: Daniel Carosone <dan@geek.com.au>
List: port-sparc64
Date: 04/03/2005 07:16:22
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On Sat, Apr 02, 2005 at 07:14:10PM +0000, Matthias Scheler wrote:
> In article <20050402161337.GM7444@snowdrop.l8s.co.uk>,
> 	David Laight <david@l8s.co.uk> writes:
> >> why does an ULTRA60 with 1GB of main memory need half an hour (estimat=
ed)
> >> to write a kernel crash dump? Solaris can do that a lot faster.
> > Solaris might only be writing the pages mapped into kernel space, not
> > the whole 1GB.
>=20
> The dump also takes a lot longer than my Pentium IV needs to dump its
> 2GB of main memory too an IDE disk.

Page-at-a-time synchronous writes?

--
Dan.

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