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*Bilton, John
Message 1 of 9 (66 Views)

IV6 Performance - food for thought.

66 Views, 8 Replies
11-05-2002 08:29 PM
OK, so there have been a lot of people ranting about performance slowdowns with Inventor 6. Just to
throw a few thoughts around, from my personal experience the only major slowdown that I have found
is in updating complex drawing views on a multiprocessor machine as BackAHL will only take 50% of
available processor time, consequently updates take a bit longer to compute.

The other major performance issues that people are griping about I have seen on some machines and
not others, so the question remains as to what is causing it. OK, Norton AV has issues at the
moment, and some other bits of spyware, live updates etc can kill performance. To illustrate the
point, this machine on my desk is identical to one at a customers site (they were delivered together
and the serial nos are one digit different), dual P3, Gloria 3 512MB RDRAM. The customer has only
noticed the drawing update performance issue and a few problems initially with graphics drivers, but
right here and now on my machine, IV6 runs like a dog. If I log in as administrator on local domain
with no network access, IV flies along, so what is the difference?

A: I don't know, but on local domain I do not have McAfee running, no Download Accelerator Plus, no
Real Player, no iMesh, no Kazaa, no ISA Server client, no Spaceball drivers, no fancy screen savers,
in fact not much at all. Short of exporting the entire contents of HKEY_CURRENT_USER for both
profiles and examining them carefully in Notepad (I would rather go to the Dentist) I can't tell you
in short.

Try creating new user profiles that are clean and update all drivers, uninstall temporarily any
network garbage and see if it makes a difference.

Anyone else have any tips?


John Bilton
--
"It seemed like a good idea at the time..."
*Dotson, Sean
Message 2 of 9 (66 Views)

Re: IV6 Performance - food for thought.

11-05-2002 09:07 PM in reply to: *Bilton, John
John this is a good tip and to make matters worse it's common sense. If you
want maximum performance out of your software you can't be dragging your
machine down with 100 of other tiny apps. In the racing world we use
electric water pumps and underdrive pulleys that don't leech power off the
engine. The same applies for computers. I had one designer who had so many
items in his system tray it took up 1/2 the taskbar. Want to place bets on
what kind of performance he was seeing. (BTW, a format followed by a remove
install privileges, took care of that problem )

--
Sean Dotson, PE
http://www.sdotson.com
remove all #s from email
-----------------------------------------
"John Bilton" wrote in message
news:A942D611F38636B5406FCE80214E810A@in.WebX.maYIadrTaRb...
> OK, so there have been a lot of people ranting about performance slowdowns
with Inventor 6. Just to
> throw a few thoughts around, from my personal experience the only major
slowdown that I have found
> is in updating complex drawing views on a multiprocessor machine as
BackAHL will only take 50% of
> available processor time, consequently updates take a bit longer to
compute.
>
> The other major performance issues that people are griping about I have
seen on some machines and
> not others, so the question remains as to what is causing it. OK, Norton
AV has issues at the
> moment, and some other bits of spyware, live updates etc can kill
performance. To illustrate the
> point, this machine on my desk is identical to one at a customers site
(they were delivered together
> and the serial nos are one digit different), dual P3, Gloria 3 512MB
RDRAM. The customer has only
> noticed the drawing update performance issue and a few problems initially
with graphics drivers, but
> right here and now on my machine, IV6 runs like a dog. If I log in as
administrator on local domain
> with no network access, IV flies along, so what is the difference?
>
> A: I don't know, but on local domain I do not have McAfee running, no
Download Accelerator Plus, no
> Real Player, no iMesh, no Kazaa, no ISA Server client, no Spaceball
drivers, no fancy screen savers,
> in fact not much at all. Short of exporting the entire contents of
HKEY_CURRENT_USER for both
> profiles and examining them carefully in Notepad (I would rather go to the
Dentist) I can't tell you
> in short.
>
> Try creating new user profiles that are clean and update all drivers,
uninstall temporarily any
> network garbage and see if it makes a difference.
>
> Anyone else have any tips?
>
>
> John Bilton
> --
> "It seemed like a good idea at the time..."
>
>
*Bystry, Mark A.
Message 3 of 9 (66 Views)

Re: IV6 Performance - food for thought.

11-05-2002 09:10 PM in reply to: *Bilton, John
i've noticed the same thing as you. i have a similar system, little more
ram. i spent a couple hours last night with our IS guy tweaking our network
settings to hopefully speed up the time it takes to pull files across the
network lines. we increased the throughput quite a bit. copying a file to my
harddrive that was about 60 megs was taking about 45 seconds. it now takes
about 8 seconds. i crossed my fingers that this might help a little in
inventor. it hasn't.

we too have norton antivirus running all the time. typically, in
engineering, that's the first thing that we kill before starting in on
inventor. i don't like alot of things running in the back ground anyway.
i've tried many little things that have improved the performance of my
computer but have improved the performance of inventor.

i have discovered the rebuild all feature and will start using that on my
slower models (pre-inv6 only of course) and see if that helps a little.

--
Mark A. Bystry
Engineer
Ziggity Systems, Inc.
mbystry@ziggity.com
*Caldwell, Larry
Message 4 of 9 (66 Views)

Re: IV6 Performance - food for thought.

11-05-2002 10:29 PM in reply to: *Bilton, John
John, it's normal to see 50% running dual processors. I assume 50% for each
processor.
~Larry

"John Bilton" wrote in message
news:A942D611F38636B5406FCE80214E810A@in.WebX.maYIadrTaRb...
> OK, so there have been a lot of people ranting about performance slowdowns
with Inventor 6. Just to
> throw a few thoughts around, from my personal experience the only major
slowdown that I have found
> is in updating complex drawing views on a multiprocessor machine as
BackAHL will only take 50% of
> available processor time, consequently updates take a bit longer to
compute.
>
> The other major performance issues that people are griping about I have
seen on some machines and
> not others, so the question remains as to what is causing it. OK, Norton
AV has issues at the
> moment, and some other bits of spyware, live updates etc can kill
performance. To illustrate the
> point, this machine on my desk is identical to one at a customers site
(they were delivered together
> and the serial nos are one digit different), dual P3, Gloria 3 512MB
RDRAM. The customer has only
> noticed the drawing update performance issue and a few problems initially
with graphics drivers, but
> right here and now on my machine, IV6 runs like a dog. If I log in as
administrator on local domain
> with no network access, IV flies along, so what is the difference?
>
> A: I don't know, but on local domain I do not have McAfee running, no
Download Accelerator Plus, no
> Real Player, no iMesh, no Kazaa, no ISA Server client, no Spaceball
drivers, no fancy screen savers,
> in fact not much at all. Short of exporting the entire contents of
HKEY_CURRENT_USER for both
> profiles and examining them carefully in Notepad (I would rather go to the
Dentist) I can't tell you
> in short.
>
> Try creating new user profiles that are clean and update all drivers,
uninstall temporarily any
> network garbage and see if it makes a difference.
>
> Anyone else have any tips?
>
>
> John Bilton
> --
> "It seemed like a good idea at the time..."
>
>
Distinguished Contributor
jorgen
Posts: 578
Registered: ‎08-03-2003
Message 5 of 9 (66 Views)

Re:

11-05-2002 10:44 PM in reply to: *Bilton, John
Larry, he wrote "updating complex drawing views on a multiprocessor machine".

I guess that means making the views pecice, which should be multithreaded, and use 100% of both CPU's.

Jorgen
*Caldwell, Larry
Message 6 of 9 (66 Views)

Re:

11-05-2002 11:09 PM in reply to: *Bilton, John
Yeah ... seems that way to me as well but, then
again, it could be that each processor is doing 50% of the
assigned task and thus each processor would be running at 100%. Not saying
that's the way it is because I don't know how to test it or even how I
would know if it's really multi-threading. My dual machine has never
shown 100% (my single does) and I don't know anyone running duals that has
mentioned seeing 100% in TM. I was just saying it's not unusual, not that we are
not being deceived because I don't know about that.

~Larry


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Larry,
he wrote "updating complex drawing views on a multiprocessor machine".

I guess that means making the views pecice, which should be multithreaded,
and use 100% of both CPU's.

Jorgen

*Keller, Kent
Message 7 of 9 (66 Views)

Re: IV6 Performance - food for thought.

11-05-2002 11:24 PM in reply to: *Bilton, John
I am not very knowledgeable on networks, but my system was running slow on
our NT network, and as fast as everyone else on the Novel. Unfortunately
all my files are on the NT server. We found that by removing Netboi (sp?)
that my access to NT sped up to about the same as on the Novel

Also I would suggest disabling the content library until you need it

Unfortunately making a new profile didn't help me 8^(

--
Kent Keller
Member of the Autodesk Discussion Forum Moderator Program

http://www.MyMcad.com/KWiK/Mcad.htm

"John Bilton" wrote in message
news:A942D611F38636B5406FCE80214E810A@in.WebX.maYIadrTaRb...
> OK, so there have been a lot of people ranting about performance slowdowns
with Inventor 6. > "It seemed like a good idea at the time..."
>
>
*Bilton, John
Message 8 of 9 (66 Views)

Re:

11-05-2002 11:25 PM in reply to: *Bilton, John
It's actually a bit of both.

In 5.3 on the make precise, it would steady away at 50% (full load on one cpu) until it was nearly
done, then the drawing view would update, at which point both cpu's would plateau at 100% (depending
on view complexity 3 seconds to quite a bit longer) and the view would be done. I never noticed
what the cpu does on a view update in 5.3, I have only been monitoring it in 6 as the updates were
taking longer, and it appears not to be making full use of available computing resources.

John Bilton
*Laimer, Leo
Message 9 of 9 (66 Views)

Re:

11-05-2002 11:28 PM in reply to: *Bilton, John
Larry et al,

I've never seen any app that's running both cpu's
simultanously exept 3dViz/max, which spreads the rendering task over up to 1024
cpu's.

The way I understand IV is multitasking is that IV
is running in the foreground on cpu0, and backahl.exe is runiing on cpu1. I
don't believe backahl itself is multithreaded.

So, backahl can use max. 100% of one cpu,
which is 50% of 2 cpu's - an that's what TM is displaying.

 

Regards,
--
Leo Laimer
Maschinen-
und Fertigungstechnik
A-4820 Bad Ischl - Austria


style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">

Yeah ... seems that way to me as well but, then
again, it could be that each processor is doing 50% of the
assigned task and thus each processor would be running at 100%. Not
saying that's the way it is because I don't know how to test it or
even how I would know if it's really multi-threading. My dual
machine has never shown 100% (my single does) and I don't know anyone running
duals that has mentioned seeing 100% in TM. I was just saying it's not
unusual, not that we are not being deceived because I don't know about
that.

~Larry


style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
Larry,
he wrote "updating complex drawing views on a multiprocessor machine".

I guess that means making the views pecice, which should be
multithreaded, and use 100% of both CPU's.

Jorgen

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