5.04 on a 486 with 32M

5.04 on a 486 with 32M

Post by joe mc coo » Thu, 15 Jan 1998 04:00:00



SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
thin ethernet and TCP/IP. Character based, Recital database application.

Whatcha think ?  Would the speed be acceptable ?  Any body out there
using this hw configuration.

I need a quick answer, please.

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5.04 on a 486 with 32M

Post by Eric Hansso » Fri, 16 Jan 1998 04:00:00



> SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
> thin ethernet and TCP/IP. Character based, Recital database application.

> Whatcha think ?  Would the speed be acceptable ?  Any body out there
> using this hw configuration.

> I need a quick answer, please.

Don' know about quick :-), but,
We have here pretty much that set-up Compaq Prosignia 486/33 jacked up to 100Mz
at the time of upgrading from 3.2v4.1. We're running a proprietary database app
with 10-15 users on a mix of serial terminals and thin etherknot wire.
I would reccomend tho, if you're serious about GUI don't consider it .
For myself, I was never very happy with it anyway so I don't miss it much :-)
(yea,yea, I know it's an age thing :-( ). Grew up with character apps.
With good wireing you can run the serial lines at 38K, gives good thruput.
Only 3 users, piece of cake.

--
eric
_________________________________________________________________
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5.04 on a 486 with 32M

Post by Tony Lawrenc » Fri, 16 Jan 1998 04:00:00



> SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
> thin ethernet and TCP/IP. Character based, Recital database application.

> Whatcha think ?  Would the speed be acceptable ?  Any body out there
> using this hw configuration.

I know nothing about Recital, but considering that we used to
run 20 character based users on Filepro (a flat file database)
on 386-20's with 16 meg of memory under Xenix, I would expect
3 users to be hardly different than one on that hardware.

If the speed is acceptable with one user, it will be fine with three,
unless there is something horribly bunged in Recital.

---

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Microsoft MCSE
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5.04 on a 486 with 32M

Post by Bill Vermilli » Fri, 16 Jan 1998 04:00:00





>> SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
>> thin ethernet and TCP/IP. Character based, Recital database application.
>> Whatcha think ?  Would the speed be acceptable ?  Any body out there
>> using this hw configuration.
>I know nothing about Recital, but considering that we used to
>run 20 character based users on Filepro (a flat file database)
>on 386-20's with 16 meg of memory under Xenix, I would expect
>3 users to be hardly different than one on that hardware.

The only comment I'll make about that is that I found you usually
had to double the memory when going from Xenix to Unix, and double
it again going from Unix 3.2.xxx to OSR5.  (Actually you didn't
need to double it, but memory chip configuration makes that a
reasonable method).  

I've seen few Xenix systems with 16MB ram.

Quote:>If the speed is acceptable with one user, it will be fine with three,
>unless there is something horribly bunged in Recital.

As you state, this could be highly dependant on Recital.
At todays' RAM prices and extra 32MB isn't that expensive.

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5.04 on a 486 with 32M

Post by Jeff Lieberma » Fri, 16 Jan 1998 04:00:00



: SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
: thin ethernet and TCP/IP. Character based, Recital database application.

Nope.  Not enough useful info.

1.  OSR5 is a disk basher and wants a fast disk subsystem.
If your 486 uses a PCI SCSI adapter and 7500 rpm drive, no problem.
If it's an EIDE drive or ISA SCSI adapter, no way.

2.  Ram is cheap.  Try for 64MB.  Use it for NBUF.

3.  If you run an X11 applications, say goodby to your
performance.

4.  I've never seen a 486DX166.  I have seen AMD 486DX4/133
which were squirly junk motherboards unsuitable for general
consumption.  All of them were returned to my distributor
in disgust.  Are you sure it's not a Pentium 166?

5.  Recital is an xBase mutation which uses seperate database
and index files.  The problem with external indexes is chronic
file fragmentation and lots of disk seeking switching between
the database and the indexes. This puts a big load on the disk
sub-system.  Again, your un-mentioned disk sub-system is the
key to performance.  While 3 network users is a very light load,
if your application is gross and inefficient, even one user
might be too many.

--
# Jeff Liebermann  Liebermann Design  150 Felker St #D  Santa Cruz  CA  95060

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5.04 on a 486 with 32M

Post by joe mc coo » Sat, 17 Jan 1998 04:00:00




> : SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
> : thin ethernet and TCP/IP. Character based, Recital database application.

> Nope.  Not enough useful info.

> 1.  OSR5 is a disk basher and wants a fast disk subsystem.
> If your 486 uses a PCI SCSI adapter and 7500 rpm drive, no problem.
> If it's an EIDE drive or ISA SCSI adapter, no way.

SCSI, Buslogic and Seagate 2G.

Quote:> 2.  Ram is cheap.  Try for 64MB.  Use it for NBUF.

Will do.

Quote:> 3.  If you run an X11 applications, say goodby to your
> performance.

No X, thankyou.

Quote:> 4.  I've never seen a 486DX166.  I have seen AMD 486DX4/133
> which were squirly junk motherboards unsuitable for general
> consumption.  All of them were returned to my distributor
> in disgust.  Are you sure it's not a Pentium 166?

Nah, I screwed that up.  I can't remember the exact spec. but it is
DX something or other.

Quote:> 5.  Recital is an xBase mutation which uses seperate database
> and index files.  The problem with external indexes is chronic
> file fragmentation and lots of disk seeking switching between
> the database and the indexes. This puts a big load on the disk
> sub-system.  Again, your un-mentioned disk sub-system is the
> key to performance.  While 3 network users is a very light load,
> if your application is gross and inefficient, even one user
> might be too many.

I can't comment on the efficiency of the code, but the use will be
light: warehousing.

I forgot to mention that I am using thin ethernet on 3c509's over
160 feet.  Is this kosher ?

--
joe mc cool
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5.04 on a 486 with 32M

Post by Stephen M. Du » Sun, 18 Jan 1998 04:00:00




$: SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
$: thin ethernet and TCP/IP. Character based, Recital database application.
$
$Nope.  Not enough useful info.
$
$1.  OSR5 is a disk basher and wants a fast disk subsystem.
$If your 486 uses a PCI SCSI adapter and 7500 rpm drive, no problem.
$If it's an EIDE drive or ISA SCSI adapter, no way.

   I ran my mail server/news server for quite a while on a
486/100, 32 MB RAM, Adaptec 1542 (ISA) SCSI host adapter,
5400 RPM hard drive.  It wasn't under particularly heavy load,
and performance was acceptable but unspectacular.

   The performance difference once I upgraded it to a Pentium 133 (or 166;
not sure which), same quantity of RAM, Adaptec 294x (PCI) host adapter,
and same hard drive was quite something, particularly on disk
performance.

$2.  Ram is cheap.  Try for 64MB.  Use it for NBUF.

   Agreed.

   Also, Jeff's point about the "Intel 486DX 166" is a good one.
Intel never made 486/166.  The highest they went, if memory
serves, was 100 with the DX4 chip.  Find out for sure what that
CPU is.
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5.04 on a 486 with 32M

Post by Eric Hansso » Sun, 18 Jan 1998 04:00:00





> > : SCO Unix 5.04 on an Intel 486DX 166, with 32M of  Ram, three users on
> > : thin ethernet and TCP/IP. Character based, Recital database application.
> I forgot to mention that I am using thin ethernet on 3c509's over
> 160 feet.  Is this kosher ?

Don't worry It'll be just fine :)
If my memory serves me right I think that the maximum trunk segment lenght
on a thin-etherknot network is 607 feet and 30 workstations connected.

--
eric
_________________________________________________________________
I'm an excellent driver.                        "Dustin Hoffman
                                                Rain Man "

 
 
 

5.04 on a 486 with 32M

Post by Jeff Lieberma » Thu, 22 Jan 1998 04:00:00



: I forgot to mention that I am using thin ethernet on 3c509's over
: 160 feet.  Is this kosher ?

160 feet of RG-58a/u is no problem.  185 meters is the maximum
segment length before repeaters are required.  Make sure that
there are exactly two 50 ohm terminators at each end of the cable
run and that only one terminator is grounded.

I did ask the local rabbi if cheapernet hardware is kosher.
He offered to make the determination in person and sing
the appropriate blessings for nothing more than a round
trip vacation to Ireland.  As this may be a bit expensive,
he suggested that you not use lard for lubricant when
pulling the cables.  A few prayers before applying power
would probably be helpful.  Inspecting my own network
hardware, I found approval stickers from all manner of
regulatory and safety organizations, but not the Kosher
seal of approval from the rabbinical council in Israel.
It would be safe to suggest that your network will probably
function without rabbinical approval.  Unless... Is this
network for a temple or kosher food manufactory?

--
# Jeff Liebermann  Liebermann Design  150 Felker St #D  Santa Cruz  CA  95060

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5.04 on a 486 with 32M

Post by D. Thomas Podna » Fri, 23 Jan 1998 04:00:00


Re: Kosher Cheapernet Revealed!

My whole office staff thanks you for adding a bit of levity
to their lives.  I passed your response around and all got a
kick out of it.

Thanks for keeping the newsgroup a nice place to stop each day.
Tom
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1. 5.04 on 486 speed test

I posted a question recently on the acceptability of installing 5.04 on
a 486 DX processor.

Thanks to everyone who responded.

Now final question, I hope:

what is a good script or progam to run in order to get a feel for the
speed of the system ?  I do not have the final application software to
hand.  

If I can run this same test on two machines, then I can compare.

Thanks again.

--
joe mc cool
                                   The more you say the less the better.
========================================================================

Benburb                            compuserve: 100117,2613
N. Ireland                         voice     : (044) 1861 548074
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========================================================================

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