[ixpmanager] SFLOW Under Reporting?

[Nick Hilliard (INEX)]

Ian Chilton wrote on 24/06/2023 09:51:
> Hi,
>
> On 2023-06-24 09:50, Nick Hilliard (INEX) wrote:
>> are you running rrdcached?
>
> Yep!

for reference, inex's cache flushes take ~2-3 seconds. It may be 
happening that you're i/o bound on your RRD spool disk. If you have 
cache flushes which take longer to run than the flush timeout, for sure 
this would cause problems.  What's the i/o load looking like on the 
disk? Assuming your partition is /dev/sda$something, e.g.

# iostat --dec=0 -y sda 1 | grep --line-buffered sda

The first column will give TPS with 1s granularity.

Reloading the mac table should be pretty quick. This is just a 
structured dump of an SQL query.

Nick

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