<br><br><div><span class="gmail_quote">On 27/12/2007, <b class="gmail_sendername">Kris Douglas</b> <<a href="mailto:webbox.uk@gmail.com">webbox.uk@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br><br><div><div><span class="e" id="q_1171998c803abf8b_1"><span class="gmail_quote">On 26/12/2007, <b class="gmail_sendername">Ian Pascoe</b> <<a href="mailto:softy.lofty.ilp@btinternet.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
softy.lofty.ilp@btinternet.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div><span><font color="#0000ff" face="Arial" size="2">Matt</font></span></div>
<div><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div><span><font color="#0000ff" face="Arial" size="2">I'm
surprised that a dual processor machine came with only 1 Gb of RAM - I thought
it was more common these days to ship with 1 Gb of Ram per
processor.</font></span></div>
<div><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div><span><font color="#0000ff" face="Arial" size="2">However, the differences between multi core and multi processor are
rather ambiguous as depending on the manufacturer they can mean the same
thing! Generally speaking multi core processors share the same DIN whereas
multi processors each have their own seperate socket.</font></span></div>
<div><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div><span><font color="#0000ff" face="Arial" size="2">But,
as long as things work, thats great - just bear in mind what Chris says about
the fact that unless you are running multiple processes / apps, you won't
generally see much of a difference in performance in apps, as, referring back to
a pre Xmas posting, very few apps on Linux are multi threading
yet.</font></span></div>
<div><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div><span><font color="#0000ff" face="Arial" size="2">HTH</font></span></div>
<div><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div><span><font color="#0000ff" face="Arial" size="2">E</font></span></div><div><span>
<blockquote>
<div dir="ltr" align="left"><font face="Tahoma" size="2">-----Original Message-----<br><b>From:</b>
<a href="mailto:ubuntu-uk-bounces@lists.ubuntu.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">ubuntu-uk-bounces@lists.ubuntu.com</a>
[mailto:<a href="mailto:ubuntu-uk-bounces@lists.ubuntu.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">ubuntu-uk-bounces@lists.ubuntu.com</a>]<b>On Behalf Of </b>Kris
Douglas<br><b>Sent:</b> 26 December 2007 18:44<br><b>To:</b> British Ubuntu
Talk<br><b>Subject:</b> Re: [ubuntu-uk] Dual-Core = less not
more?<br><br></font></div><br><br>
<div><span class="gmail_quote">On 26/12/2007, <b class="gmail_sendername">Matthew
Macdonald-Wallace</b> <<a href="mailto:matthew@truthisfreedom.org.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">matthew@truthisfreedom.org.uk</a>>
wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi
all,<br><br>I was one of the many who purchased the Dell laptops when they
shipped<br>here in the UK with Ubuntu pre-installed. I've got a
Pentium Dual-Core<br>chip (not a core-duo although I'm not sure what the
difference is!) <br>installed and although /proc/cpuinfo shows both cores as
seperate<br>processors, I'm really not convinced that the dual-core with
1024MB RAM<br>is faster than my old 1.4GHz with 512MB RAM.<br><br>I've got
stock Gutsy installed on the laptop (upgraded from feisty using <br>apt-get
dist-upgrade) so if there are any packages that you think would<br>be more
beneficial, please let me know.<br><br>One of the things I've stumbled upon
in the forums is the possibility of<br>running x64 on Core2-Duo processors -
would that help me here? <br><br>Cheers,<br><br>Matt.<br><br><br>--<br><a href="mailto:ubuntu-uk@lists.ubuntu.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">ubuntu-uk@lists.ubuntu.com</a>
<br><a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk
</a><br><a href="https://wiki.kubuntu.org/UKTeam/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://wiki.kubuntu.org/UKTeam/</a><br></blockquote></div><br>I
think there is a point where the performance just levels out. You will notice
the difference when you run lots of apps at once. I dont know, but I'm running
X86 on a 2x dual xeon machine with 8gb of ram, and it boots about the same
time as my dual core 3.6ghz 2gb ram, but is much better on performance, when
running say, lots of applications, database stuff etc..<br clear="all"><br>--
<br>Kris Douglas<br> Softdel Limited
Hosting Services<br><br> Web: <a href="http://www.softdel.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">www.softdel.net</a><br> Mail:
<a href="mailto:kris@softdel.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">kris@softdel.net</a>
</blockquote></span></div></div>
<br>--<br><a href="mailto:ubuntu-uk@lists.ubuntu.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">ubuntu-uk@lists.ubuntu.com</a><br><a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk</a><br><a href="https://wiki.kubuntu.org/UKTeam/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">https://wiki.kubuntu.org/UKTeam/</a><br><br></blockquote>
</span></div>
</div><br>Just referring to windows here, you can assign processes specific positions on CPU's can't you, I think it's actually set as the Affinity, like cpu0,1,2,3,4 depending on your configuration. Is this not possible with Ubuntu/ The Linux Kernel?
<br><br>Just wondering, normally Linux has something ahead of windows when it comes to this sort of thing.. <br><br>To put it into practice, say you had a dual CPU 200mhz server, running Apache and Postgres/ MySQL (whatever you prefer) on the one chip makes it run slowly... So you can set the affinity of the SQL server to cpu1 only (the second cpu) and have the Apache server only running on cpu0. This in theory would allow the apps to have 200mhz of CPU each... I imagine that's how it works in Win, so what about Linux? Anyone?
<div><span class="e" id="q_1171998c803abf8b_3"><br clear="all"><br>-- <br>Kris Douglas<br> Softdel Limited Hosting Services<br><br> Web: <a href="http://www.softdel.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
www.softdel.net</a><br> Mail: <a href="mailto:kris@softdel.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">kris@softdel.net</a>
</span></div></blockquote></div><br>For Reading, research lead me to see:<br><br><a href="http://www.cyberciti.biz/tips/setting-processor-affinity-certain-task-or-process.html">http://www.cyberciti.biz/tips/setting-processor-affinity-certain-task-or-process.html
</a><br><br><a href="http://ubuntuforums.org/showthread.php?t=636521">http://ubuntuforums.org/showthread.php?t=636521</a> <br clear="all"><br>-- <br>Kris Douglas<br> Softdel Limited Hosting Services<br><br> Web:
<a href="http://www.softdel.net">www.softdel.net</a><br> Mail: <a href="mailto:kris@softdel.net">kris@softdel.net</a>