<span class="Apple-style-span" style="font-family: sans-serif; border-collapse: collapse; ">Søren-</span><div><font class="Apple-style-span" face="sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;"><br>
</span></font></div><div><font class="Apple-style-span" face="sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">In the future can you please post this sort of feedback to the VTK Developers list? In the mean time I have forwarded your email to the list. Thanks,</span></font></div>
<div><font class="Apple-style-span" face="sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;"><br>Will<br></span></font><br><div class="gmail_quote">On Wed, Oct 27, 2010 at 3:25 AM, <span dir="ltr"><<a href="mailto:Soeren.Holm@hexagon-machine-control.com">Soeren.Holm@hexagon-machine-control.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><font size="2" face="sans-serif">Hi Ken And Will</font>
<br>
<br><font size="2" face="sans-serif">I'm writing to you because we have found
some performance regression within VTK. I work at a company doing machine
control solution for the construction industry. We use VTK to visualize
the desired ground surface, the machine and some arrow and such to guide
the user.</font>
<br>
<br><font size="2" face="sans-serif">We currently use VTK 5.4.2 but will
revert back to using 5.0.4 because of the following two commits.</font>
<br>
<br><font size="2" face="sans-serif">[31b67b4801a09514bcace0e14130048c860d31b8]
ENH:Support multiple timers. This checkin defines the API and provides
a partial implementation. Platform specific subclasses will extend the
behavior of this class to fully implement the changes.</font>
<br>
<br><font size="2" face="sans-serif">[fdeb975c7f1c6f566f4b80c13cf3cd026a37139b]
BUG: Fixed problems where multiple observers were being invoked for the
same event when one observer invoked another event in the same object.</font>
<br>
<br><font size="2" face="sans-serif">Especially fdeb975c7f1c6f566f4b80c13cf3cd026a37139b
makes our cpu usage double. It does not help to any of the commits on 5.4.2
to there must be other regressions after these commits also.</font>
<br>
<br><font size="2" face="sans-serif">Do you have any comments as to what
has happened to VTK?</font>
<br>
<br><font size="2" face="sans-serif">I would have filed a bug-report, but
I do not know what actually is wrong.</font>
<br>
<br><font size="2" face="sans-serif">/Søren Holm</font></blockquote></div><br><br clear="all"><br>-- <br>William J. Schroeder, PhD<br>Kitware, Inc.<br>28 Corporate Drive<br>Clifton Park, NY 12065<br><a href="mailto:will.schroeder@kitware.com">will.schroeder@kitware.com</a><br>
<a href="http://www.kitware.com">http://www.kitware.com</a><br>(518) 881-4902<br>
</div>