https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 19 Apr 2026 06:05:14 +0000 Fri, 02 Jul 2021 02:33:26 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=19190 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=19190&PID=89073&title=x570d4u-esxi-7-ryzen-5800x#89073 Author: Khun_Doug
Subject: 19190
Posted: 02 Jul 2021 at 2:33am

The first thing would be to check the motherboard BIOS for any updates you missed.

Do you get this behavior from ESXi when no VMs are powered on and the machine should just be idle?

And one last thing, a bit off-topic and definitely not what you were asking. Have you considered using Windows Server and Hyper-V as the hypervisor? Before I retired we had a mix of ESXi and Hyper-V. I could never see a performance difference between the two, and I found Hyper-V for easier to handle than ESXi.
]]> Fri, 02 Jul 2021 02:33:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=19190&PID=89073&title=x570d4u-esxi-7-ryzen-5800x#89073 https://forum.asrock.com/forum_posts.asp?TID=19190&PID=89060&title=x570d4u-esxi-7-ryzen-5800x#89060 Author: pittnet
Subject: 19190
Posted: 01 Jul 2021 at 2:26am

Hi. I am experiencing an odd problem with the combo in the Topic.

When using this mainboard with a ZEN 3 CPU, I have in ESXi 7.0.2 a lot of random CPU spikes to 100% on a single core every few minutes. The CPU spikes are not caused by any VM. After some time, the whole machine gets stuck at 100% CPU load (at least it shows 100% CPU load ) and is basically unresponsive.

The same mainboard with a ZEN 3 (Ryzen 3600X) CPU, does not do this. This behavior I also never saw on an Intel CPU.

I read a document, where VMware explains that they did some changes in ESXi 7 to resolve some issues with the CPU scheduler in EPYC CPUs. They suggested do change some bios settings to ?śmess??around with NUMA settings.

Now my question... Does someone know where on this board I can find these settings? Has anyone experienced the same issue or something similar?

BTW. I could reproduce the same problem with an Asus Prime X570 Pro.
I also know that a Ryzen CPU is not officially supported by VMware.
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