[comp.sys.att] Which UNIX pc kernel is better? 3.51 or 3.51a

jcs@tarkus.UUCP (John C. Sucilla) (06/09/88)

In article <737@rush.cts.com> bob@rush.cts.com (Bob "Rush" Ames) writes:
>In article <536@sialis.mn.org>, rjg@sialis.mn.org (Robert J. Granvin) writes:
>> >Which kernel has the "net-at-large" found to be more reliable for a system
>> >with heavy UUCP traffic?
>> 
>> NOTE:  These problems will _only_ occur if you are using the On Board
>> Modem for UUCP type stuff.  If you use a modem attached to any of the
>> serial ports rather than use the OBM, you'll never see this problem.
>
> No.  This is the second time I've read this on the net, so I'm speaking up.

I've been running on 3.5 practically crash free for several months until
I loaded the 3.5.1.4 upgrade about a week ago.  I got up one morning and
the machine was froze so I powered it down and went off to work.  When I got
home I powered it back up and got to execute about 4 times and it panic'ed
on vector 4.  I booted again  and it ran a little longer but then I got some
thing i've never seen before, it said: *hpte: 0x6028.  Then it double
panic'ed with an NMI (kernel parity).  It's been up 24 hours now and is still
running. 

I'm running a TrailBlazer + on tty001 and an AT&T PC6300 (which was powered
down at the time) on tty002.  The OBM and tty000 are unused.

First of all, whats hpte? Second, is this just a fluke or are these some of
the 3.51(a) symptoms?  Am I better off with 3.50?

How are the real 3.51(a) and the 3.5.1.4 upgrade related?  I'm guessing that
it's basically the same kernel but the rest of the stuff that changed
isn't there.  Am I right?
-- 
John "C". Sucilla,  A silicon based life form.
       {ihnp4,chinet,ddsw1}!tarkus!jcs
  You have a better idea? Now's the time..

rjg@sialis.mn.org (Robert J. Granvin) (06/10/88)

>How are the real 3.51(a) and the 3.5.1.4 upgrade related?  I'm guessing that
>it's basically the same kernel but the rest of the stuff that changed
>isn't there.  Am I right?

Nope.  3.5 and 3.51 are two entirely different kernels complete with
entirely different support programs.  But in so many places they look
so surprisingly similar, you'd believe they were the same... :-)

3.51 has superseded 3.5 for a long time now.  As I understand it, all
the support and fixes are now being directed to 3.51 only.  The only
time any fixes will be made available in the future for any other
version level is to resolve a serious problem, but I hear that it
still doesn't cover 3.0, which will no longer receive support...

3.5.1.4 and 3.51a are not related in any way (although there might be
some similiarities.  I'm not clear on the fixes included in 3.5.1.4).

-- 
"I've been trying for some time to                           Robert J. Granvin
 develop a life-style that doesn't          National Information Systems, Inc.
 require my presence."                                       rjg@sialis.mn.org
    -Garry Trudeau          ...uunet!{{amdahl,hpda}!bungia,rosevax}!sialis!rjg