# Slow Discourse Rebuild on a VM with slow disks

**URL:** <https://meta.discourse.org/t/slow-discourse-rebuild-on-a-vm-with-slow-disks/179440>\
**Category:** Self-hosting\
**Created:** [February 12, 2021, 11:01am UTC](https://meta.discourse.org/t/slow-discourse-rebuild-on-a-vm-with-slow-disks/179440 "2021-02-12T11:01:23Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Falco](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/falco/32/179432_2.png) [@Falco](https://meta.discourse.org/u/Falco)\
**Post date:** [February 12, 2021, 6:23pm UTC](https://meta.discourse.org/t/slow-discourse-rebuild-on-a-vm-with-slow-disks/179440/8 "2021-02-12T18:23:27Z")

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> [@rgrunbla](#):
>
> Is this rebuild time expected ?

Yes. A slow server will have slower rebuild times like this.

> [@rgrunbla](#):
>
> Is the rebuild somehow parallelized, and will adding more cores to our virtual machine instance speed up the process ?

Some steps are, but not all. That said, a single core means sharing the CPU between the multiple processes the container have, and will be even worse when trying to serve traffic. So if you can afford it’s better to add some cores.

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_[View the full topic](https://meta.discourse.org/t/slow-discourse-rebuild-on-a-vm-with-slow-disks/179440)._