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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Hi J. Bobby,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">My company uses Perl scripts to upload ASCII text data files into Oracle. The uploads happen on a system that can handle up to 32 threads.
So multi-threading is still of massive time benefit even though we had to have numerous threads to overcome the initial decrease in performance from single to multi-threaded Perl. The uploaders currently run with up to 12 threads as the benchmark study showed
that more than that had very diminished returns for our system setup.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Regards,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Shane<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma"> J. Bobby
Lopez [mailto:jbl@jbldata.com] <br>
<b><span style="font-weight:bold">Sent:</span></b> November 20, 2009 2:42 AM<br>
<b><span style="font-weight:bold">To:</span></b> arocker@vex.net<br>
<b><span style="font-weight:bold">Cc:</span></b> tpm@to.pm.org<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [tpm] Single thread Perl 5.8.8 vs. Multi-threaded Perl 5.10.1</span></font><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><font size="3" face="Times New Roman"><span style="font-size:12.0pt"><o:p> </o:p></span></font></p>
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12.0pt;margin-left:36.0pt">
<font size="3" face="Times New Roman"><span style="font-size:12.0pt">I can't think of many situations where multi-threaded perl would be beneficial. I can understand if you were trying to make a Perl/Tk application appear snappier, or have it do graphics (animation)
and accept input simultaneously.. but would there be other, more common situations where multi-threaded perl would be considered?<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><font size="3" face="Times New Roman"><span style="font-size:12.0pt">On Mon, Sep 21, 2009 at 4:43 PM, <<a href="mailto:arocker@vex.net">arocker@vex.net</a>> wrote:<o:p></o:p></span></font></p>
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<font size="3" face="Times New Roman"><span style="font-size:12.0pt"><br>
> If you want high performance, you may find it easier to use<br>
> processes with some form of IPC rather than relying on Perl threads.<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><font size="3" face="Times New Roman"><span style="font-size:12.0pt">People will keep trying to get the application level to do the OS's jobs.<br>
Unfortunately, threading seems to be a problem even the OS people haven't<br>
solved yet.<o:p></o:p></span></font></p>
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