[ixpmanager] Sflowtool

[Nick Hilliard]

years ago, we ran sflow p2p stats on a slower machine with spindle
disks.  On freebsd + ufs, the disk seek iops rate was around 60-70% of
the spindle capacity.  On linux + ext3, the disks were pegged at 100%
with similar filesystem parameters (noatime).  We didn't do a whole lot
more diagnostics at the time, and later moved the configuration to a
faster machine + SSDs, but the general conclusion we came to was that
without filesystem tuning (which we didn't really want to do), freebsd's
out-of-the-box performance was measurably better for this sort of workload.

Nick

> Budiwijaya <mailto:bbuuddiiww at gmail.com>
> 25 March 2018 at 02:03
> Hi Nick,
>
> Can you share the historical performance issues?
>
> Thank you
> Budiwijaya
>
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> Nick Hilliard <mailto:nick at inex.ie>
> 21 March 2018 at 12:24
>
> Hi Carlos,
>
> on most versions of linux (debian / rhel derivatives and possibly more),
> on it needs to be compiled and installed from the source:
>
> https://github.com/sflow/sflowtool/releases
>
> On freebsd, it's available in the pkgng collection. INEX runs sflow on
> a freebsd server due to historical performance issues, but it will run
> fine on linux.
>
> Nick
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