# Excessive CPU usage Mac Fuse IDE

**URL:** <https://forums.fusetools.com/t/excessive-cpu-usage-mac-fuse-ide/3453>\
**Category:** Bug Reports\
**Created:** [April 16, 2015, 1:57am UTC](https://forums.fusetools.com/t/excessive-cpu-usage-mac-fuse-ide/3453 "2015-04-16T01:57:41Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Elliot\_Geno](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/elliot_geno/32/507_2.png) [@Elliot\_Geno](https://forums.fusetools.com/u/Elliot_Geno)\
**Post date:** [April 16, 2015, 1:57am UTC](https://forums.fusetools.com/t/excessive-cpu-usage-mac-fuse-ide/3453/1 "2015-04-16T01:57:41Z")

</div>

While Idle, the Fuse IDE consumes 40% of my CPU and fans whir…

MacBook Pro (Retina, Mid 2012) Processor: 2.6 GHz Intel Core i7 Memory: 8 GB 1600 MHz DDR3 GPU: NVIDIA GeForce GT 650M 1024 MB HDD: 500 GB Flash Storage

---

<div class="post-metadata">

**Author:** ![Anders\_Lassen](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/anders_lassen/32/522_2.png) [@Anders\_Lassen](https://forums.fusetools.com/u/Anders_Lassen)\
**Post date:** [April 16, 2015, 10:39am UTC](https://forums.fusetools.com/t/excessive-cpu-usage-mac-fuse-ide/3453/2 "2015-04-16T10:39:43Z")

</div>

Hi Elliot! Thanks for reporting.

This is a known issue. On some mac’s, the current build triggers a bug in mono, causing 40% CPU usage no matter what.

The problem is fixed internally, but the work around was quite extensive, so it may take a week or so before we can roll it out.

Anyway, welcome back 🙂