increase() returns decimal numbers?

[stefan...@gmail.com]

Hi,

I have setup a jmx_exporter (awesome work!) and started to analyze JVM metrics for a project I'm working on.

I wanted to have a metric that counts the # of GC events over the last 30 secs. To do that, I used the increase function.

However, as you can see below, I got a decimal number (3.59 for ParNew), when actually in the interval there have been 3 GC events.

Why is that?

[Brian Brazil]

The data shows that in 25 seconds there were 3 GC events. You asked for the GC events over 30 seconds, so 3/25*30 = 3.6.

Brian

 

Why is that?

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Brian Brazil

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[Stefano Doni]

Thanks Brian,

now I get it.

However, I would like to have the counts of GC since the last polling interval. Something similar to what irate does vs rate or idelta vs delta for gauges, but I don't see "iincrease" in the current query functions?

On Thursday, 29 December 2016 16:43:05 UTC+1, Brian Brazil wrote:

On 29 December 2016 at 14:57, <stefan...@gmail.com> wrote:

Hi,

I have setup a jmx_exporter (awesome work!) and started to analyze JVM metrics for a project I'm working on.

I wanted to have a metric that counts the # of GC events over the last 30 secs. To do that, I used the increase function.

However, as you can see below, I got a decimal number (3.59 for ParNew), when actually in the interval there have been 3 GC events.

The data shows that in 25 seconds there were 3 GC events. You asked for the GC events over 30 seconds, so 3/25*30 = 3.6.

Brian

 

Why is that?

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Brian Brazil

www.robustperception.io

[Brian Brazil]

On 13 January 2017 at 11:26, Stefano Doni <stefan...@gmail.com> wrote:

Thanks Brian,

now I get it.

However, I would like to have the counts of GC since the last polling interval. Something similar to what irate does vs rate or idelta vs delta for gauges, but I don't see "iincrease" in the current query functions?

That is idelta, which you should only be using if you're doing pretty advanced stuff (and partially depends on a feature that hasn't been implemented yet).

A rate on the _count is probably what you're looking for.

Brian 

On Thursday, 29 December 2016 16:43:05 UTC+1, Brian Brazil wrote:

On 29 December 2016 at 14:57, <stefan...@gmail.com> wrote:

Hi,

I have setup a jmx_exporter (awesome work!) and started to analyze JVM metrics for a project I'm working on.

I wanted to have a metric that counts the # of GC events over the last 30 secs. To do that, I used the increase function.

However, as you can see below, I got a decimal number (3.59 for ParNew), when actually in the interval there have been 3 GC events.

The data shows that in 25 seconds there were 3 GC events. You asked for the GC events over 30 seconds, so 3/25*30 = 3.6.

Brian

 

Why is that?

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For more options, visit https://groups.google.com/d/optout.

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Brian Brazil

www.robustperception.io

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Brian Brazil

www.robustperception.io