gmetric haproxy

[gilles]

Hi,

On the same model as redis, here is a haproxy plugin. Using using slope=positive for COUNTER types.

Thanks

--Gilles

[vvuksan]

One of the issues with using counters is that metric collection needs to be synced with the polling period ie. by default gmetad polls every 15 seconds so if you rely on counters and run scripts out of cron you will 0 values on graphs for 3 out of 4 polling periods. Does that make sense ?

[gilles]

Ah, got it. That's why the ganglia display is weird (I'm using graphite).

I thought the metrics lived until dmax was expired, so a gmetad poll
will return the same value until the value is updated or the time
expires.

--Gilles

On Wed, Nov 16, 2011 at 12:19 PM, Vladimir Vuksan
reply@reply.github.com
wrote:

One of the issues with using counters is that metric collection needs to be synced with the polling period ie. by default gmetad polls every 15 seconds so if you rely on counters and run scripts out of cron you will 0 values on graphs for 3 out of 4 polling periods. Does that make sense ?

---

Reply to this email directly or view it on GitHub:
#11 (comment)

[hawson]

bq. One of the issues with using counters is that metric collection needs to be synced with the polling period

Would using --slope=derivative help with the polling period issue? It'd introduce a problem later in the RRD files, as there's no overflow/wrapping checks with DERIVE: https://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html#IDERIVE