High CPU load / lockup

I’m seeing occasional CPU spikes (fully railed) and/or iowait due to paging and out of memory warnings when hitting refresh on the webmin homepage. The server will lock up for 3+ min, or until I issue a “sudo systemctl restart webmin” which immediately drops load back to normal. The server is fairly light weight (specs below) and I’ve already disabled background performance checking in “Webmin > Config > background status collection”. What else can I do (in terms of configuring webmin) to address this?


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