Thanks for your reply. My qemu version is qemu-kvm-rhev-0.12.The key problem is, qemu-kvm process memory usage(RSS) always increases no matter how much memory used in guset vm. for example, qemu-kvm process rss is 2.3g in host machine, but free output in vm shows only 151MB My question is : 1. Why qemu-kvm doesn't release physical memory ?2. How to monitor real memory usage in guest vm? Sincerely. On Thursday, September 1, 2016 11:36 PM, Patrick PICHON <patrick@pichon.me> wrote: why not using collectd with the libvirt plugin on your host. It will colect the info, and then you just have to display with rrdtool On , journey journey wrote:
Hi All
Is there a tool to monitor qemu-kvm guest vm memory usage ( free in guest vm)? Nowadays, I have already researched some methods: 1. qemu-kvm process memory usage. Since qemu-kvm process memory usage always increases as time goes on, it will not reflect the memory usage in vm. 2. virsh dommemstat Just as method 1. 3. virsh qemu-monitor-command --hmp [domain name] "info mem" (1) when guest vm memory size less than 4Gbytes, it will output something like this: 7f882000-7f883000 00001000 urw 7fbf8000-7fbf9000 00001000 urw 88000000-88001000 00001000 -rw 88002000-88003000 00001000 urw 88004000-88005000 00001000 urw c9000000-c9001000 00001000 urw e8bfe000-e8bff000 00001000 urw ea000000-ea001000 00001000 urw ffbfc000-ffbfd000 00001000 -rw ffbfe000-ffbff000 00001000 urw it shows pde info of PG_PRESENT_MASK, maybe has some relation with guest vm memory usage. (2) when guest vm memory size larger than 4Gbytes, it will output noting.
Please help!! _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
