SNMP Interface Stats on CRS326-24S+2Q+ extremely slow

RouterOS General
1

I’m collecting statistics using Prometheus and snmp_exporter. I’ve also hand-picked OIDs to scrape in order to optimize scraping time.

So far, all is great. Scraping on my CHRs take milliseconds, CCRs around 2 seconds.
The second slowest, CRS326-24G-2S+, takes 4-5 seconds to scrape. The slowest of them all, CRS326-24G-2S+, takes almost 1 minute to collect data.

The issue seems to specifically be with mtxrInterfaceStats (1.3.6.1.4.1.14988.1.1.14). Data comes in slowly when I do an snmpwalk on that OID.

What gives? Is this a known issue with this switch? Is there any way for me to speed this up?

2

Did you get to the bottom of this? I’m seeing the same when we try to walk OID 1.3.6.1.4.1.14988 on our CRS354.

3

Unfortunately not. I just outright skipped those slow OIDs.

In my case, I am more concerned about the health of the switch (temps, fan speeds, etc.) rather than the actual interface stats. For the interface stats/traffic, I get them from my core router.

My recommendation is to hand pick which OIDs to scrape.