Error drawing graph for servers with 256 threads

I only have this error for servers with 256 threads (AMD Epyc 2x 64 core with hyperthreading enabled). All others render the processor graph fine. Is there a limit on number of ‘processors’? We’re going to disable hyperthreading, but I’m wondering if anyone else has had this issue? Thanks in advance!

librenms@sapsucker:~$ ./validate.php

Component Version
LibreNMS 21.4.0-71-g9ae652a15
DB Schema 2021_04_08_151101_add_foreign_keys_to_port_group_port_table (208)
PHP 7.4.3
Python 3.8.5
MySQL 10.3.25-MariaDB-0ubuntu0.20.04.1
RRDTool 1.7.2

[OK] Composer Version: 2.0.13
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

I wonder if this is related to what I’m seeing here: Total Device Traffic error drawing graph

The problem is for devices with a large number of network ports and what you’re talking about is a large number of threads shown on a single graph.

Once I turned off hyperthreading, it has no problem rendering graphs for 128 cores. My old LibreNMS build could monitor 256, so it’s definitely a new issue.

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