search for: resource_management_guide

Displaying 6 results from an estimated 6 matches for "resource_management_guide".

2012 Aug 17
1
getCPUStats of a domain by a non-root user - libvirtError: Requested operation is not valid: cgroup CPUACCT controller is not mounted
Hello, I'm trying to use libvirt as a non-root user to obtain statistics on the CPU usage by VMs using the Python API. I'm performing basically the following steps: import libvirt conn = libvirt.openReadOnly(None) dom = conn.lookupByUUIDString('268e38ea-1bc7-41e4-c19e-8eff682e58e4') dom.getCPUStats(True, 0) However, they result in the following error: libvir: QEMU Driver
2016 Sep 07
2
how to limit cpu usage for specified processes
Hi, Is there some tool or method in centos that can limit cpu usage to some percentage for specified processes that consume large cpu resource? I found cpulimit which is only able to limit one process. what I want is one tool that can limit several same processes' cpu usage. Thanks! Regards andrew
2016 Sep 07
0
how to limit cpu usage for specified processes
Hello, You could do it with Cgroups, if your specified processes run or can be made to run in group permissions. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Resource_Management_Guide/sec-cpu_and_memory-use_case.html Regards, -- Sander Kuusemets University of Tartu, High Performance Computing, IT Specialist Skype: sander.kuusemets1 +372 737 5694 On 09/07/2016 10:45 AM, qw wrote: > Hi, > > > Is there some tool or method in centos that can limit cpu usage to some p...
2012 Oct 17
0
cgroup blkio.weight working, but not for KVM guests
...ased on this statement: "Currently, the Block I/O subsystem does not work for buffered write operations. It is primarily targeted at direct I/O, although it works for buffered read operations." from this page: https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/ht ml/Resource_Management_Guide/ch-Subsystems_and_Tunable_Parameters.html that this problem might be due to host-side buffering, but I have that explicitly disabled in my guest configs: <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type="file" device="disk">...
2015 Jun 05
6
Effectiveness of CentOS vm.swappiness
Am 05.06.2015 um 00:23 schrieb Dennis Jacobfeuerborn: > If I'd have to venture a guess then I'd say there are memory pages that > are never touched by any processes and as a result the algorithm has > decided that it's more effective to swap out these pages to disk and use > the freed ram for the page-cache. That's my guess too. [...] > impact. If however these
2014 Feb 09
3
libvirt/qemu and cgroups
Dear list, I am building a Arch server on my Arch box. My tools are QEMU/KVM and libvirt to manage the guest, systemd as system manager. I am looking at implementing the Linux Control Groups facilities for resource management. Even after long hours of reading, I am not quite sure about how to deal with the cgroups facilities. First, do I really need to care about all that, or libvirt and