Subject: Re: building -current, CPU optimizations, and the 'sh' problem.
To: None <firstname.lastname@example.org>
From: Christos Zoulas <email@example.com>
Date: 10/15/2005 08:31:30
In article <Pine.NEB.firstname.lastname@example.org>,
John D. Baker <email@example.com> wrote:
>On Sat, 15 Oct 2005, Rui Paulo wrote:
>> Also, do you know if your CPUs have external cache? I think that
>> information is only available from the PROM.
>As I recall, the microSPARC-II does not and cannot have external cache.
>Conversely, the HyperSPARC modules have ONLY external cache. Later,
>versions did have an (tiny) L1 cache , but those tend to be rare. My
>modules are the more common type.
>So: SS5-110 has internal cache but no external cache.
> SS20-2xHS150 has external cache but no internal cache.
>I'll see what the PROMs say about each, but it will take some time to
>get the SS20 data as it is currently busy formatting/testing disks
>under Solaris 9...
>In the meantime, I've rebuilt 'sh' with -mcpu=v8 -mtune=supersparc. The
>initial indications are that this did not help. I got a segfault building
>pkgtools/digest as the root dependency of an unpopulated /usr/pkg/...
>Cleaning and building pkgtools/digest directly proceeded without problems.
>I'm now re-re-building the first few packages again to see how it behaves.
>Nope, no joy. Building x11/rxvt elicits a Segmentation Fault from 'sh',
>just like the -mcpu=v8 (only) version. Bleah. Word is sh built with
>debugging symbols (-g) doesn't fault. Will try that next...
>Using ksh as 'sh' for pkgsrc works OK, but seems sluggish. Using ksh as
>sh to rebuild sh failed miserably. the 'mkbuiltin' script blew up, but
>didn't halt building everything else. The resulting executable was useless.
>Fortunately, I had the original sh tucked away in the DESTDIR from the
>build phase, so I could use it to rebuild sh with the CPUFLAGS above.
>Might this be an indication that my system, built entirely with
>-mcpu=supersparc (except, now, for /bin/sh) is ultimately unstable?
Where does it segfault? What does gdb say?