I have been having a problem with my proxmox server for several days. The installation consists of a clean Debian on which I have installed proxmox using their instructions. The problem is that every once in a while the CPU goes up to 20-60% for no apparent reason. In htop no process is consuming that amount of CPU and in top the sys goes up but not the total consumption.
I have done different tests with PSN and perf. The first tool didn't give me much information but the second one showed me different symbols that are causing a high consumption (I guess).
I disabled swap and set tuned to `throughput-performance` and nothing has changed.
I attach the image and the text response from the `perf report` after the record command.
I have done different tests with PSN and perf. The first tool didn't give me much information but the second one showed me different symbols that are causing a high consumption (I guess).
I disabled swap and set tuned to `throughput-performance` and nothing has changed.
I attach the image and the text response from the `perf report` after the record command.
Bash:
Samples: 326K of event 'cycles', Event count (approx.): 63571299029
Children Self Command Shared Object Symbol
+ 14.12% 0.00% swapper [kernel.kallsyms] [k] secondary_startup_64_no_ver
+ 14.08% 0.05% swapper [kernel.kallsyms] [k] cpu_startup_entry
+ 13.95% 0.23% swapper [kernel.kallsyms] [k] do_idle
+ 13.53% 0.00% swapper [kernel.kallsyms] [k] start_secondary
+ 9.19% 0.02% swapper [kernel.kallsyms] [k] cpuidle_enter
+ 9.09% 0.14% swapper [kernel.kallsyms] [k] cpuidle_enter_state
+ 4.66% 1.31% swapper [kernel.kallsyms] [k] acpi_idle_do_entry
+ 4.39% 0.09% swapper [kernel.kallsyms] [k] acpi_idle_enter
+ 3.58% 0.00% CPU 0/KVM qemu-system-x86_64 (deleted) [.] 0x000055a52cfd9700
+ 3.58% 0.00% CPU 0/KVM libc-2.31.so [.] ioctl
+ 3.58% 0.00% CPU 0/KVM [unknown] [k] 0x7570632d34365f36
+ 3.58% 0.00% CPU 0/KVM [unknown] [k] 0x0000000000000190
+ 3.58% 0.00% CPU 0/KVM [unknown] [k] 0x000055a52fb15d10
+ 3.50% 0.00% CPU 0/KVM [kernel.kallsyms] [k] entry_SYSCALL_64_after_hwfr
+ 3.50% 0.00% CPU 0/KVM [kernel.kallsyms] [k] do_syscall_64
+ 3.50% 0.00% CPU 0/KVM [kernel.kallsyms] [k] __x64_sys_ioctl
+ 3.50% 0.00% CPU 0/KVM [kernel.kallsyms] [k] kvm_vcpu_ioctl
+ 3.48% 0.05% CPU 0/KVM [kernel.kallsyms] [k] kvm_arch_vcpu_ioctl_run
+ 2.56% 0.07% swapper [kernel.kallsyms] [k] asm_sysvec_call_function_si
+ 2.52% 0.02% swapper [kernel.kallsyms] [k] sysvec_call_function_single
+ 2.41% 0.25% swapper [kernel.kallsyms] [k] __schedule
+ 2.38% 0.07% swapper [kernel.kallsyms] [k] schedule_idle