5 Jan
2017
5 Jan
'17
5:50 p.m.
Larry McVoy <lm(a)mcvoy.com> wrote:
On Wed, Jan 04, 2017 at 07:23:12PM +0100, Joerg
Schilling wrote:
Thank you for the list!
BTW: in order to avoid more missunderstandings,
could you mention when you have
been in the Sun kernel group and what kind of things you did with the kernel?
Sure. Here's some notes I put together for Eli Lamb when I was thinking
about moving to Dec (to work for Jim Gray). The date on the file is
1992 so I had been there about 4 years. I was in the kernel group from
1988 to about 1992, then moved over to hardware where I did a cluster
based NFS server and LMbench. Then I went to SGI and did a new name
server that could serve all of California on a 200 mhz server, made
NFS deliver serve up files at 60MB/sec per file (we could do as many
streams in parallel as we had network cards). I showed up in October 1988. This is what I can
remember that I've done
since I've been here. When I interviewed at DEC, their HR people thought
I was lieing and I went through two more interviews before they finally
believed me.
* Doubled file system throughput. Publication. Generated sales. Talk to
Steve Kleiman for confirmation.
So it seems that you worked on code for SunOS-4.x but not on code for SunOS-5.x.
With that background I could understand your view.
Please note that I had access to the BSD-4.3 sources and SVr2/SVr3 in the
university.
In addition, I am the author for the Joliet and ISO-9660:1999 support in both
UnixWare 7 and Solaris, so I know about the differences between SunOS-5.x and
the AT&T based SVr4 as well as I had legal access to the SCO UNIX sources
for this and another project. I warned SCO about their filesystem code that
would need a lot of attention to work correctly on a 64 bit platform.
I have a good overview on the differences and common elements of BSD, SunOS and
AT&T based UNIX versions.
I worked on code for the SunOS-4.x kernel and for the SunOS-5.x kernel and I
ported drivers from SunOS-4.x to SunOS.5-x, so I am pretty sure about what I
write and you may have gotten your impression because you did not compare the
code we are talking about now.
Because you worked on filesystem throughput, you should know the new memory
subsystem from SunOS-4.x well....This is a big part of the SunOS-4.x kernel and
if you check the OpenSolaris kernel sources with your knowledge of the
SunOS-4.x kernel, you should be able to confirm my statements.
* Single handly implemented POSIX conformance in the
4.x OS. Bullet item
on lots of sales. Talk to Don Cragun for confirmation.
Good hint, I'll ask him ;-) Today is the next POSIX teleconference call and he
is still in the goup of core people.
* Implemented smoosh - basis for Avocet and nselite.
Talk to Shannon for
confirmation.
Interesting: Do you mean "Bill Shannon"? Was he involved in SCCS or smoosh
as well? I know Bill as the author of "cstyle" and I pushed him to make it OSS
in 2001 already, before it appeared in OpenSolaris.
In January 2015, I talked with Glenn Skinner about SCCS and smoosh and he
pointed me to his smoosh patent:
http://patentimages.storage.googleapis.com/pdfs/US5481722.pdf
that has been expired in late 2014. I received a lisp prototype implementation
for Glenns idea. Did you write the C implementation? Have you been involved in
the .ml protytype as well?
Jörg
--
EMail:joerg@schily.net (home) Jörg Schilling D-13353 Berlin
joerg.schilling(a)fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/