# Very different performance in different computers due to garbage collection?

**URL:** <https://discourse.julialang.org/t/very-different-performance-in-different-computers-due-to-garbage-collection/87563>\
**Category:** Performance\
**Tags:** question, performance, garbage-collection, speed-optimization\
**Created:** [September 21, 2022, 10:00am UTC](https://discourse.julialang.org/t/very-different-performance-in-different-computers-due-to-garbage-collection/87563 "2022-09-21T10:00:41Z")\
**Posts on this page:** 1\
**Showing post:** 30

<div class="post-metadata">

**Author:** ![PatrickMcFarlane](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/patrickmcfarlane/32/50027_2.png) [@PatrickMcFarlane](https://discourse.julialang.org/u/PatrickMcFarlane)\
**Post date:** [May 12, 2023, 12:54pm UTC](https://discourse.julialang.org/t/very-different-performance-in-different-computers-due-to-garbage-collection/87563/30 "2023-05-12T12:54:26Z")

</div>

This problem seems like it might be related to garbage collection issues discussed in this post: [GC going nuts](https://discourse.julialang.org/t/gc-going-nuts/93447)

I’m going to see if upgrading to v1.9 and providing a heap size hint that is substantially more than what Julia appears to be using helps with the excess garbage collection time.

---

_[View the full topic](https://discourse.julialang.org/t/very-different-performance-in-different-computers-due-to-garbage-collection/87563)._