Linux-Development-Sys Digest #518

[Digestifier]

Linux-Development-Sys Digest #518, Volume #8 Sun, 25 Feb 01 13:13:14 EST

Contents:
  Re: developers needed ("Igor Shmukler")
  Re: How many current users? (Kasper Dupont)
  Re: kernel + init (Kasper Dupont)
  Re: LILO - Boot from logical drive? (Kasper Dupont)
  Re: OT: Supermount (Kasper Dupont)
  Re: How do I do this in C? (Kasper Dupont)
  Re: Where is the physical address of any kernel source code? (Kasper Dupont)
  how to determine ix86 architecture binary was built for (Andy Teague)
  Re: IRQ Line Assign (Michael Mueller)
  Re: how to determine ix86 architecture binary was built for (Michael Mueller)
  Re: OT: Supermount (Michael Mueller)
  Re: How do I do this in C? (Grant Edwards)
  Re: debugging lilo/kernel? (F. Heitkamp)
  Re: OT: Supermount (Kasper Dupont)
  Re: developers needed ([EMAIL PROTECTED])
  Re: developers needed ("Igor Shmukler")
  EFAULT errors in a module ("James Cowan")



From: "Igor Shmukler" <[EMAIL PROTECTED]>
Subject: Re: developers needed
Date: Sun, 25 Feb 2001 08:20:52 GMT

I just answered JD, so I will answer you, otherwise I have no time for this.

<[EMAIL PROTECTED]> wrote in message
news:o_1m6.14581$[EMAIL PROTECTED]...
> "Igor Shmukler" <[EMAIL PROTECTED]> writes:
> > <[EMAIL PROTECTED]> wrote in message
> > news:GFEl6.10538$[EMAIL PROTECTED]...
> > > [EMAIL PROTECTED] () writes:
> > > > In article <[EMAIL PROTECTED]>,
> > > > Stefaan A Eeckels <[EMAIL PROTECTED]> wrote:
> > > >
> > > > >Mach is _not_ the right foundation for high-performance
> > > > >kernels ;-)
> > > >
> > > > Wasn't NT based on Mach? ;)
> > >
> > > Microsoft hired Raschid, head of the Mach project, to head up
> > > Microsoft Research, and pushed out publicity for a while trying to
> > > imply some relationship.
> > >
> > > That's a far cry from basing a VMS "clone" with a GUI on Mach...
>
> > NT is based on PRISM last project Dave Cuttler headed for digital
> > and not directly VMS. MS did hire Raschid as well as almost
> > everybody else from original Mach group. Some people claim that NT
> > is pretty much pure Mach with changed variable names etc. These
> > people are very reliable, but unless Bill will publish sources will
> > never know, will we.
>
> That's "Dave Cutler," and I would suggest the thought that NT can't
> simultaneously be:

I am sure typo concept is unknown to you, but it's not first or last time
for me.

>   - Based on PRISM, a sort of "next-gen VMS" from Digital, and
>   - "pure Mach with changed variable names"
>
> Pick one or the other; NT can't simultaneously be clones of both
> things.

1st, I didn't say NT was PRISM's clone. 2nd why not? Ever heard of multiple
inheritance?

> > Tru64 performs just fine, I think. So comment regarding bad
> > performance needs to be backed a little.
>
> Tru64 was originally OSF/1, a version of Unix based on the _first_
> generation of Mach, back when they hadn't yet decided that Mach would
> become a microkernel.
> Whether or not Tru64 performs well or not hasn't the slightest bit to
> do with microkernels, because it's not using one.


Tru64 is based on Mach 2.5 which is not 100% microkernel, but next closest
thing.
Should you be interested, raise money, buy the Tru64 sources then you could
see for yourself.
Such issues as task switches and IPC can be easily balanced out by nightmare
causing designs decisions.

> (reverse (concatenate 'string "gro.gultn@" "enworbbc"))
> http://vip.hex.net/~cbbrowne/
> "I have stopped  reading Stephen King novels.  Now I  just read C code
> instead."  -- Richard A. O'Keefe

You may reply if interested, but I don't think I will participate in
conversion. Look in my answer to JD for explanation.




--

From: Kasper Dupont <[EMAIL PROTECTED]>
Subject: Re: How many current users?
Date: Sun, 25 Feb 2001 11:22:24 +

[EMAIL PROTECTED] wrote:
> 
> I am trying to find out how many users have at least one process on
> the machine.  I am tweaking the schedule function I am trying to
> figure out how many users are in the system
> 

That is different from what uptime reports.

Uptime reports users logged into the system,
but notice that a user can have processes
runing in the background even after logging
out.

Also notice that there are daemon processes
runing with different UIDs.

If you want to count the number UIDs which
have currently processes runing that should
not be very hard. The kernel 

Linux-Development-Sys Digest #518

[Digestifier]

Linux-Development-Sys Digest #518, Volume #6 Tue, 23 Mar 99 03:15:05 EST

Contents:
  Optimized compilation system? (Yuri Niyazov)
  Re: 256 threads limit on linux (bill davidsen)
  Re: SMP with Celerons - problems (BL)
  Re: ANNOUNCE: Linux Router ( 3 1/2 " size hardware) (Christopher Browne)
  Re: Where should I look for the source for 'cp'? (Bill Anderson)
  Re: no setuid for scripts (Thomas Zajic)
  Re: no setuid for scripts (H. Peter Anvin)
  Re: no setuid for scripts (Andrew Heckerling)
  Re: no setuid for scripts (Andrew Heckerling)
  Re: Building Linux (Drew Tennenbaum)
  Re: Building Linux (Jason Pell)
  How do you tell what version of a program? (Kevin Miller)
  Re: After Week 1 With Linux -- licking wounds. (Jason Pell)
  Building Linux ([EMAIL PROTECTED])
  Re: getting a signal when there's data available (Adam P. Jenkins)
  Re: Building Linux Shared Libraries (Ross Crawford)
  Re: Vendor Specific SCSI commands (David Price)
  Re: ANNOUNCE: Linux Router ( 3 1/2 " size hardware) (Phil Howard)
  Check here for all your computer products & services needs... ([EMAIL PROTECTED])
  Re: Restoring a Win95 (VFAT) filesystem from tape (Mogens Kjaer)



From: Yuri Niyazov <[EMAIL PROTECTED]>
Subject: Optimized compilation system?
Date: Mon, 22 Mar 1999 18:35:36 -0500

I need some advice: I've been running Debian 2.0 ever since it came out,
but now my needs have grown further - 
I have a Pentium 2 400, and since all of Debian packages were compiled
for the 486, much of the optimizations are missing
Are there any Linux distributions that are compiled specifically and
with full optimizations for the Pentium 2? I know Stampede
does, but I do not want to plunge into it without knowing more. If I am
to build all packages by myself, what is the easiest to use  package
management system (RPM, dpkg, slp, slackware)? Thank you

--

From: [EMAIL PROTECTED] (bill davidsen)
Subject: Re: 256 threads limit on linux
Date: 22 Mar 1999 23:15:09 GMT

In article <7bb3gc$r8h$[EMAIL PROTECTED]>, Olga Sivash <[EMAIL PROTECTED]> wrote:
| I'm using RH 5.2 linux 2.0.36
| I can't produce more then 256 processes or threads per user.
| Why is it so?
| 
| How to configure kernel for more threads and/or processes?

See ulimit. I haven't done serious work on a 2.0 kernel in a while, but
for 2.1/2.2 the kernel limit is either dynamic or much higher, I run a
500 process data test on an SMP machine with 2.1.131.

-- 
  bill davidsen <[EMAIL PROTECTED]>  CTO, TMR Associates, Inc
Politicians and diapers have one thing in common. They should both be
changed regularly and for the same reason.
--Ted Symons(?)


--

From: BL <[EMAIL PROTECTED]>
Subject: Re: SMP with Celerons - problems
Date: Tue, 23 Mar 1999 00:54:18 GMT

Gerald Brandt <[EMAIL PROTECTED]> wrote:
: Hi there,

: I got my Celeron 300A's to go dual processor over the weekend.  And it
: almost works!

: Actually, everythings works perfectly, until I push both CPU's to the max.
: Then it just locks up tighter than a drum.  My assumption is that if it works
: under light load, then the SMP stuff all works.

: Linux 2.2.3
: RedHat 5.2
: dual Celeron 300A's
: 128 MB Ram

this is the config I've been running for a month straight, now.

: Has anybody else done this upgrade?

yes ;-)

:  I bought two MS-6905 adapter cards, 
: and two PPGA Celerons.

that could be the problem.  mine are slot-1's that had the operation done.  I
don't (personally) approve of the ppg thingies on a pcb that's in a socket -
so under extreme stress, the loading and capacitance could be your problem.
just guessing, but pc's are poorly designed as it is - adding to their problem
with slotket adapters is asking for trouble.

:  I modified the adapter cards as per 
: www.cpu-central-com, and all seemes well (almost).

apparently not all is well, though...


: Gerald

: -- 
: ---
: Gerald Brandt   [EMAIL PROTECTED]
:  12:41pm  up 20:14,  4 users,  load average: 0.02, 0.01, 0.00
: Linux summit.rubicon.net 2.0.36 #1 Tue Oct 13 22:17:11 EDT 1998 i586 unknown

--

From: [EMAIL PROTECTED] (Christopher Browne)
Subject: Re: ANNOUNCE: Linux Router ( 3 1/2 " size hardware)
Reply-To: [EMAIL PROTECTED]
Date: Tue, 23 Mar 1999 00:38:50 GMT

On Mon, 22 Mar 1999 14:45:28 -0800, Jack Levin <[EMAIL PROTECTED]> wrote:
>Most of us have dreamed of having a linux router a size of 3 1/2 floppy
>(and it would not be a palm pilot).
>Calibri-133, is a compact, diskless, programmable blackbox.
>The linux OS stored on high performance flash chip (DiskonChip),
>boots under 30 seconds.  During boot - up, the image is trasferred
>onto Ramdisk.

The burning question is...  So how much does it cost? 

For $200, that's pr