# How to track build time or bundle size by time?

**URL:** <https://discuss.circleci.com/t/how-to-track-build-time-or-bundle-size-by-time/29811>\
**Category:** Build Environment\
**Created:** [April 16, 2019, 9:18am UTC](https://discuss.circleci.com/t/how-to-track-build-time-or-bundle-size-by-time/29811 "2019-04-16T09:18:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yukaii](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/yukaii/32/22064_2.png) [@Yukaii](https://discuss.circleci.com/u/Yukaii)\
**Post date:** [April 16, 2019, 9:18am UTC](https://discuss.circleci.com/t/how-to-track-build-time-or-bundle-size-by-time/29811/1 "2019-04-16T09:18:34Z")

</div>

After some googling, I know that circleCi already provided the feature called **Insights** , which you can see build time by date.

I want to ask that does Insight support any customization, that we can configure our own dashboard, tracking data like bundle sized changes over time, or build time spent on specific build phase (e.g. frontend bundling)?

Thanks in advance.

---

<div class="post-metadata">

**Author:** ![drazisil](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/drazisil/32/24029_2.png) [@drazisil](https://discuss.circleci.com/u/drazisil)\
**Post date:** [April 16, 2019, 5:37pm UTC](https://discuss.circleci.com/t/how-to-track-build-time-or-bundle-size-by-time/29811/2 "2019-04-16T17:37:31Z")

</div>

HI Yukai. We don’t offer customization for Insights at this time. We do have a few feature requests in [https://ideas.circleci.com/ideas/search?utf8=✓&query=insights](https://ideas.circleci.com/ideas/search?utf8=%E2%9C%93&query=insights) and you can create a new one as well.

Most of the data come from the API [https://circleci.com/docs/api/#section=reference](https://circleci.com/docs/api/#section=reference), are you able to get the information you need from that?

---

<div class="post-metadata">

**Author:** ![Yukaii](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/yukaii/32/22064_2.png) [@Yukaii](https://discuss.circleci.com/u/Yukaii)\
**Post date:** [April 18, 2019, 8:37am UTC](https://discuss.circleci.com/t/how-to-track-build-time-or-bundle-size-by-time/29811/3 "2019-04-18T08:37:15Z")

</div>

Thank you drazisil. I want to upload our customized data fields, to be specific, the webpack bundle build time, and track it over time, inspect the time increase or decrease through each commit and PR on CI. Maybe it’s time to build our own wheel 😂