# Diskio growth additionally to total values

**URL:** <https://discuss.elastic.co/t/diskio-growth-additionally-to-total-values/66531>\
**Category:** Beats\
**Tags:** metricbeat\
**Created:** [November 18, 2016, 11:43am UTC](https://discuss.elastic.co/t/diskio-growth-additionally-to-total-values/66531 "2016-11-18T11:43:54Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![kaem2111](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kaem2111/32/24961_2.png) [@kaem2111](https://discuss.elastic.co/u/kaem2111)\
**Post date:** [November 18, 2016, 11:43am UTC](https://discuss.elastic.co/t/diskio-growth-additionally-to-total-values/66531/1 "2016-11-18T11:43:55Z")

</div>

Hi all,

when visualizing system.diskio.read.bytes I get only a growing chart of total bytes. This is not very handsome. I need a growth in read.bytes per rtt-interval (round trip time).

Is there any of the following solutions implemented I can use:

1. an option=delta in metricbeat which provides (additionally) the difference between actual read.byte and read.bytes from previous run (by keeping them in memory in the harvester) or

2. a pipeline function to access the previous value for same key-measurand to built a difference or

3. a scripted field function in Kibana to build a difference of 2 values in sequence or

4. a movavg(2) function in Kibana's visualization to calculate growth.

If not, are there any plans to implement any of them (option1+4 preferred). I imagine you also already noticed, that implementing the go diskio package is too less (otherwise you would have build a sample diskio bottleneck dashboard) and that building the difference is the key to success for diskio analysis.

---

<div class="post-metadata">

**Author:** ![ruflin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ruflin/32/3116_2.png) [@ruflin](https://discuss.elastic.co/u/ruflin)\
**Post date:** [November 18, 2016, 2:05pm UTC](https://discuss.elastic.co/t/diskio-growth-additionally-to-total-values/66531/2 "2016-11-18T14:05:12Z")

</div>

What you are looking for is probably this issue here: [https://github.com/elastic/beats/issues/2783](https://github.com/elastic/beats/issues/2783) Feel free to add there your thoughts.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 16, 2016, 2:05pm UTC](https://discuss.elastic.co/t/diskio-growth-additionally-to-total-values/66531/3 "2016-12-16T14:05:21Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.