Show cpu usage ubuntu5/18/2023 Regarding the kvm configuration, this is the guest cpu definition: Īnd I'm using virtio and virtio-fs mounts. Whether the discrepancy between the total (about 27.7%) on the guest, and the even higher utilisation on the host of that process (39.6%) means there's something configured badly in the kvm setup, or about right for expected overhead.How to understand these figures, and get an overall picture of the load on a the guest & host? Unlike disk and memory, monitoring the CPU usage on a Linux system isn’t as straightforward.Top gives similar mismatched figures (high for individual processes, low overall utilisation on both guest and host). I tried switching between IRIX and non-IRIX CPU modes, and the numbers still don't seem to add up. On the guest I see this:Īnd I can't tell why the total CPU is 4.4% when the top few individual process CPU comes to 27.3%.Īnd on the host, total CPU utilisation for the qemu-system-x86_64 is higher again (around 35%–40% steady state, and there are 2 guests running at the moment), but the overall CPU usage is also really low (i.e. ![]() However I cannot understand these metrics from glances. I've allocated 2 vCPUs to the guest which is Ubuntu 18.04 32-bit, and it's running an application which normally requires a small amount of CPU. ![]() ![]() ![]() This includes CPU usage, memory and swap utilization, running processes. I have a host Ubuntu 18.04 64-bit os running on a 24-core Xeon system. The top command shows a summarized view of various resource utilization metrics. CPU usage is currently expressed as the percentage of time spent running during the entire lifetime of a process.
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