Hallo Axel,
On 8/15/13 W33 19:17, Axel Fischer wrote:
> Hi there,
> beside Peters presentation at a CESNET event
> (http://archiv.ces.net/events/2012/campus-monitoring/p/haag-nfdump-nfsen.pdf)
> and a few side notes in short threads on this mailinglist I didn't find a lot
> on
> this topic.
> Collecting the flow data and writing it to different files does scale to a
> higher level than three digit profiles or even more do.
> What are your experiences? How far did you get till you needed to split
> exporters over different nfsen servers? Are hundreds or thousands of profiles
> possible without the need for a mainframe? And what about alerts?
I have no experience with hundreds or thousands of profiles. I know of an
installation with a few hundreds of profiles.
The operator told me, it performs ok.
The critical point is I/O on a server. If you can split live data and profile
data on different storage, you can scale
up pretty much up to 100k flows/s.
As for profiles: Shadow Profiles only need read performance - little to no
writes. You can also specify the number of
profilers in nfsen.conf for more parallel profiling. The profiler itself reads
once, and writes for each channel. Alerts
are considered as channels. In the end, profiles is a matter of write I/O
throughput as CPU is not the issue, as
filtering and compressing is very efficient. In any case use compression. That
reduces the required write bandwidth.
- Peter
>
> Or did I miss something obvious?
>
> @Peter: The roadmap for NfSen 2.0 looks nice. Is there any chance that you
> give
> us a rough estimate when there could be a release? Do you need testers or
> feedback?
I always need testers and will let you know, as soon as there is such a release.
I can not give any date so far - sorry for that.
>
>
> Regards,
> Axel
>
--
Be nice to your netflow data
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