Re: Komodo performance issue

On 11/02/2010 3:20 PM, Tom SAVELL wrote:
> I don't know about Anti-Aliased text rendering performance issues over
> Xlib. I know that I have been using X-based apps in the same way for the
> past 13 years, most of which were written using Tcl/Tk front-ends. We're
> doing VLSI design here, and almost every VLSI design tool has adopted
> Tcl/Tk for both the front end GUI and the scripting language. But even
> 13 years ago the Modelsim simulator ran perfectly fine on Xlib with far
> slower processors on the server (Sun Sparc5) and desktop client
> (Pentium-Pro 100MHz). I have always used Hummingbird Exceed as the
> client X-Server on Windows. So it is definitely strange to find an
> application that runs so slowly.

Are you using a recent version of Exceed?  I actually switched away from 
Exceed to Xwin32 because I found the latter to be much faster, though 
perhaps recent Exceed versions have improved.  The Windows X-server 
features can make a difference.  I also use Xming, which is a free X 
server for Windows (https://sourceforge.net/projects/xming/).

> My tkcon test was using Tcl 8.4 in both cases (slightly different
> patchlevels - 8.4.13 on Linux, 8.4.16 on Windows). I was really just
> trying to get a baseline for relative performance comparison between the
> two machines, knowing that tkcon would be fairly lightweight otherwise.
> But I got a paradoxical result where the slower CPU completed the task
> twice as fast.

You would need to download and try ActiveTcl 8.5 (or use an 8.5 Tk that 
was built with --enable-xft) to compare.  Xft is known for being much 
slower on rendering, but that's the way it can do proper AA.  When 
viewing on a local display, you don't really notice.

> I really like the Komodo environment, but the performance is so poor on
> the Linux machines that it is nearly unusable. And because I'm doing
> VLSI design work, I really need to run it on the Linux server as that is
> where the bulk of the code exists.

Actually, Komodo is feature rich to the point where you don't need to 
run the UI on the remote Linux server to edit the files there.  You 
could instead run it on whatever local machine you have (Win, Lin or OS 
X) and use one of the cool add-ons like Remote Drive Tree of JSTreeDrive 
(see Tools > Add-ons) to work with remote files.

Regards,

Jeff
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