Hi Guys,
You were a big help earlier when it turned out that my old version of XP
and the machine it was on were not really up to the task...now I have
another performance related issue with GNS3. I bought myself two new
machines at the time, a desktop with a 3.3 Ghz i5, and a laptop with a
2.2 GHz i7. Naturally I installed GNS3 on both, but only really tried it
in earnest on the laptop last week when I had some spare time while on a
contract, eg they ran out of work for me for a few hours. So I started
building the configuration used in the Cisco CCIE book for an MPLS
example. This finished up with 12 routers, ten 3745 and two 7200 where I
needed more interfaces than the smaller routers could do. Once I had it
configured up I found that I was getting some odd errors like non
matching duplex on fast ethernet interfaces that are actually configured
to match, and knew from previous experience that this probably means the
machine is struggling a bit...sure enough, task manager showed that it
was running all processors at 100%. It didn't seem to be an idlepc
issue. I tried a few different values for each of the routers but no
improvement.
So then I shifted the whole configuration over to the desktop, where it
runs fine, the processor load sits down low with only the odd peaks
reaching 25% utilisation.
Ok, so the machine that was struggling has a slower clock speed, but
only 2/3 slower, surely not enough to make that much difference, and it
is an 8 core machine rather than 4, which should help. But the other
main difference is that the desktop is running a 64 bit version of
windows(home premium) while the laptop is running a 32 bit version,
Professional. So do you guys think that this could be the difference? If
so I may as well look at getting an upgrade for the laptop. Both
machines have 8 GB of ram installed, but I wonder if the laptop gets the
full benefit of this with the 32 bit OS on it?
regards
John
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