From: Nick Griffin (nick.jon.griffin@gmail.com)
Date: Mon Apr 07 2008 - 19:01:55 ART
I'm running a Q6600 with 8 GB or ram ghost ios/mmap. 22 routers in SP Lab
(OSPF, BGP, MPLS running), I also have 13 routers in IE R/S Topology, at
this point no routing protocols running, just idling. I should also note
I've got 4 3745's running 12.4(15)T4 code in the SP lab. It hovers right now
between 45-50% cpu. Proper cooling seems to help keep things stable.
top - 17:02:01 up 21:40, 6 users, load average: 9.62, 12.12, 13.11
Tasks: 171 total, 1 running, 168 sleeping, 1 stopped, 1 zombie
Cpu(s): 47.6%us, 1.4%sy, 0.0%ni, 50.8%id, 0.0%wa, 0.1%hi, 0.1%si,
0.0%st
Mem: 8193996k total, 8119616k used, 74380k free, 355560k buffers
Swap: 8393952k total, 0k used, 8393952k free, 5803920k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2898 root 15 0 3517m 2.3g 2.2g S 101 28.9 1391:16
/usr/sbin/dynamips -H 7201
2897 root 15 0 4153m 2.9g 1.7g S 90 36.6 1182:51
/usr/sbin/dynamips -H 7200
On Mon, Apr 7, 2008 at 4:46 PM, Piyoush Sharma <piyoush@gmail.com> wrote:
> I've been running dynamips as per IEWB topology.. - thats 14 routers incl
> the terminal server on a quad-core Q6600 with 3gig ram... no ghostios
> etc...
> and it works without a hitch... all the way thru BGP...
> even when i start all routers at once, the CPU usage remains at 75%. Max
> i've seen is 85% and that was when I was trying varied cmds and ended up
> with deliberate routing/switching loops..
> Its all abt the idlepc values.. Dynamips + idlepc work wonders on a quad
> core. Earlier I tried the same topology on a dual-core, I did have some
> issues, like EIGRP routes flapping when fully loaded. But I think that was
> the older dynamips variant.
>
> Anyways, 'd say its a wonderful way to save on the cost of rack rental
> initially - ofcourse if you do not have the pc, building something so
> powerful can be a bit expensive.. but worth the effort.. considering the
> same can be used for almost all CCIE related studies and rack practice.
>
> Gary: the only fine tuning I've had to do was idlepc values... which took
> all of 10mins.. the 3rd value it came up with worked wonders!!!
>
> Piyoush.
>
> On Mon, Apr 7, 2008 at 2:32 PM, Dale Shaw <dale.shaw@gmail.com> wrote:
>
> > I'm running dynamips without too much trouble on a circa 2004 IBM
> > ThinkPad T42p (2.0GHz single core, 1GB RAM).
> >
> > Admittedly I'm not pushing it hard, usually only having 4-5 images
> > running at once, using a single hypervisor.
> >
> > You obviously need to get the idlepc/idlemax stuff under control.
> > Otherwise, it'll eat all system resources in sight.
> >
> > Oh yeah, I run Linux. dynamips seems much happier on Linux.
> >
> > dale@buzzsaw:~$ uname -a
> > Linux buzzsaw 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008
> > i686 GNU/Linux
> >
> > cheers,
> > Dale
> >
> > On Tue, Apr 8, 2008 at 7:11 AM, Gary Duncanson
> > <gary.duncanson@googlemail.com> wrote:
> > > Surprised to hear this. Being old school I have battered on with my
> rack
> > but
> > > otherwise I would have gone this route (no pun intended).
> > >
> > > Any fine tuning required?
> > > ----- Original Message ----- From: "Joseph Brunner"
> > > <joe@affirmedsystems.com>
> > > To: "'Cockcroft, Lance'" <lc3881@att.com>; <ccielab@groupstudy.com>
> > > Sent: Monday, April 07, 2008 8:44 PM
> > > Subject: RE: Dynamips on Laptop
> > >
> > >
> > >
> > >
> > >
> > > > I'm having a miserable time with SDM/IPS with a virtualized 3725.
> > > >
> > > > Dynamips sucks for anything but simple eigrp/bgp routing.
> > > >
> > > > The moment you start using anything other than that, it CRAWLS even
> > with
> > > > only 1 router running (on a very very powerful pc)
> > > >
> > > > -Joe
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of
> > > > Cockcroft, Lance
> > > > Sent: Monday, April 07, 2008 3:36 PM
> > > > To: ccielab@groupstudy.com
> > > > Subject: Dynamips on Laptop
> > > >
> > > > Anyone SUCCESSFULLY running dynamips with FULL labs on a dual core
> > > > laptop.
> > > >
> > > > If so please let us know your specs.
> > > >
> > > >
> > > >
> > > > Thanks,
> > > > Lance Cockcroft
> >
> > _______________________________________________________________________
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>
> _______________________________________________________________________
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