so, cause eBPF pulls all from the kernel, yes you can. but you need to dive into the stuff.. Knowing basics about performance and kernel can help. but it's possible.
slainte! ---------------------------------------- 26.12.2022 19:19:47 Gk Gk <ygk....@gmail.com>: > So, can I derive cpu, memory, disk and network stats of the VMs ? > > On Monday, December 26, 2022, Marko Horn <we...@zbfmail.de> wrote: >> Hello, >> >> yes I can :-) >> >> https://www.brendangregg.com/ >> >> on the page you will find a link to his 'Linux Performance' book. >> On the page are also further Infos about the topic 'performance'. >> you will have to dive into the stuff. >> (e)BPF is a "MIGHTY" area. >> But you can pull out nearly 'every' meta data from the kernel. >> >> Also for your interest: >> >> https://www.brendangregg.com/Slides/SREcon2022_ComputingPerformance/ >> >> Computing Performance 2022 and what is on the horizon! >> >> have fun! >> >> Slainte >> >> ________________________________ >> >> 26.12.2022 18:09:39 Gk Gk <ygk....@gmail.com>: >> >> Thanks Marco for the response. Is it possible to collect these vm stats from >> the host KVM hypervisor ? Also can u give the link for this book ? >> >> Thanks >> Happy holidays >> >> On Monday, December 26, 2022, Marko Horn <we...@zbfmail.de> wrote: >>> Hi, >>> >>> I think best way is to use BPF to collect stats. I did this in past in >>> combination with 'perf'. >>> Theres a nice book of Brandon Greg from Netflix Networks where he describe >>> how to do this and how to write own scripts. >>> >>> merry Xmas >>> >>> marko >>> >>> ________________________________ >>> >>> 26.12.2022 11:34:20 Gk Gk <ygk....@gmail.com>: >>> >>> Hi All, >>> I am trying to collect memory, disk and network stats for a VM on kvm host. >>> It seems that the statistics are not matching what the OS inside the VM is >>> reporting. Why is this discrepancy ? >>> Is this a known bug of libvirt ? Also I heard that libvirt shows cumulative >>> figures for these measures ever since the VM was created. Also I tested by >>> creating a new vm and comparing the stats without a reboot . Even in this >>> case, the stats dont agree. Can someone help me here please ? >>> >>> Thanks >>> Kumar >>>
