[c-nsp] CSR1000V and CPU usage

Pshem Kowalczyk pshem.k at gmail.com
Wed Aug 12 17:37:48 EDT 2015


We use the CSR1000V on ESX as well. From my experience - the code that
calculates the load of the router is most likely not aware it runs within a
VM so the calculation are done in relation to 100% CPU utilisation, but
since the number of allocated cycles might change the resulting number is
relative.  What ESX reports is probably closer to truth (but also take it
with a grain of salt). In our tests we pushed over 2.5Gb/s through a single
instance of CSR1000V and over 500k pps (AX licence, with pinned resources)
for prolonged periods of time with no problems.
I do not think you should worry about that process.

kind regards

On Thu, 13 Aug 2015 at 08:35 Roland Dobbins <rdobbins at arbor.net> wrote:

> On 13 Aug 2015, at 1:24, Robert Hass wrote:
> > I deployed Cisco CSR 1000V as edge router in DataCenter.
> Deploying any variety of software-based router at one's edges is a
> mistake, and has been for many years.
> The Cisco virtual stuff is great for labs, training, testing, and so
> forth - kudos to them for producing it, and I hope they do even more
> with their virtual versions.
> That being said, there's no way I'd deploy any of it to route actual
> packets on actual production networks.  Nothing against Cisco nor their
> virtual stuff, but in any kind of Internet-facing environment,
> software-only doesn't scale.
> At some point in the future, this will change, as hardware-based
> routers/switches/whatnots will take the 'nFV' trend even further, and
> software hypervisor-based ones will gain direct, high-performance access
> to serious hardware-based NICs, NPUs, et. al.  But for now, I personally
> think it's way too soon to be doing this in production environments.
> -----------------------------------
> Roland Dobbins <rdobbins at arbor.net>
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