similar to: Monitoring _real_ CPU utilization

Hi all, If I want to measure the Dom0 CPU utilization, which is a more accurate way among the following 3 options? 1. Running profiling program like "sar" in domain 0. 2. Running Xentop in domain 0 3. Running Xenmon.py in domain 0 By running these 3 different program, the results have certain differences. So I am confused here which to use.Thank you in advance. Lei

Hello, I noticed that the CPU% reported by xentop appears to be too high. With dom0 idle xentop is reporting between 14-17% CPU utilization while at the same time top in dom0 is reporting 1-4% CPU utilization. I see that the TODO for xentop includes a task to make CPU% more accurate but looking at the code for xentop and libxenstat I''m not sure how to go about this. Assuming the CPU

Hello! We are actually doing some test for hardware sizing. Now we see differences between the CPU load monitored with xentop on Dom0 and top on a DomU. Why is there a difference and what are the right values? Maybe there exists a better way to get exact results in hardware sizing with XEN? Thx Alex _______________________________________________ Xen-users mailing list

Hi, While getting a hardware node''s CPU utilization, I''m getting values between .0 and 1.0. These values however do not seem to correspond to load on the domains themselves. I have a program that print these values once a second for all cpus on the node: import XenAPI import time session = None def print_cpu_utilization(): # Find a non-template VM object cpus =

Hello I have a 3 node experiment as detailed below to estimate the bridged networking performance in para-virtualized Xen 3.0 on Emulab (https://www.emulab.net/) Here is how the 3-node topology looks (This topology is specified by means of an NS-2 file) topology: _______________________________ | | Node0:eth0 ------|Node1:eth0

Hi, I'm wondering what the proper way is to determine the utilization of host resources when running a couple of VMs. I know xentop but the man-page isn't exactly helpful in explaining what the values it displays actually mean. What I'm looking for is a way to say "Ok, i have 4 VM's running and right now they utilize 40% of the cpu resources the host has, 50% of disk i/o

Hi all, Using xentop you can see dom0 uses 98% of the CPU''s with o without any domU''s running. Using top on dom0 shows cpu nearly 100% idle The pc has an intel dual core processor running xen3.0.2 Booting a domU and domU performance is bad. Any ideas please? Chris. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Dear All. I have set up a Xen testbed on a computer.(Dom0 use debian lenny) I would like to know the possible ways to monitor the network traffic of DomU''s from Dom0. # command ''xentop'' display NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR SSID debianlenny --b--- 14 0.0 270204 25.8 278528 26.6 1 0 0

Kemal, It sounds like you are doing something wrong. I strongly recommend that you profile your application to see exactly where the CPU time is being spent. AMD happens to have a nice profiler called CodeAnalyst that they give away for free. And it's plenty usable on Intel CPUs as well. http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_3604,00.html Make sure you test a

I am creating some custom nagios plugins and I am scraping data from xen using the nagios command: /usr/sbin/xentop -b -i 2 -d1 I am trying to get the network tx / rx data, however I think I am missing something here. NETTX(k) NETRX(k) So total network bandwidth is 1048576 k if the above header from xentop is true. So I am wondering why the output for each vm exceeds the theoretical max, Is

Hi. These patches add the output function for blktap statistics into xentop. Currently, xentop outputs only blkback statistics, and not blktap statistics. By these patches, xentop is made cover both blkback and blktap. In xen, back-end driver has two types; blkback and blktap. Blkback driver is old back-end driver. Blktap driver is new back-end driver and is recommended currently. Usage of both

Package: xen-utils-common Version: 3.0.3-0-2 Severity: wishlist Tags: patch Currently when hostnames are wider than 10 chars, the xentop output is messed up. Please add the following patch to support up to 20 chars, or better yet, allow the columns to auto size :) #! /bin/sh /usr/share/dpatch/dpatch-run ## xentop-name-width.dpatch by <apeeters@lashout.net> ## ## All lines beginning with

I tried netperf / netserver with Dom0 / DomU, but I could''nt get a correct NW traffic with xentop. Is there anybody could help me? At Host1''s Dom0, run netperf -H VMIP At Host2''s DomU (with VMIP named TTVM), run netserver At Host1, run xentop this way ->"xentop -n -b -d 1" At Host2, run xentop this way->"xentop -n -b -d 1" In Host2''s

All, I have a domU running Ubuntu 12.04.1 LTS 64bit using PVonHVM which is working well but I noticed a quirk and just wanted to check it wasn''t just my misunderstanding. On my dom0 (Arch Linux, 64bit, AMD Phenom 2 X4 965 CPU, Xen 4.2.0 from my own PKGBUILD) I run "xl top" and xentop loads and shows all the currently running domains; only none of the domains have anything

Hi, Me and another sysadmin has independently been researching a problem where DomU randomly locks (Can’t reach it via xl console, no ping / SSH connection, shown as stuck in running-state in xentop) on two of our separate machines (installed completely independently): Dom0: Debian 7.0 with Xen version: 4.1.4 and xen-utils 4.1.4-3+deb7u1 Debian 7.1 with Xen version: 4.1 DomU: 7.0 7.1(.3)

Hi, I want to extract CPU usage values done by specific domain for long interval of time. How can I do that ? Is there any option to set with xentop command. thanks, -Rahul --------------------------------- Here’s a new way to find what you''re looking for - Yahoo! Answers --0-1332848610-1175145966=:89690 Content-Type: text/html; charset=iso-8859-1

Hello, I would like to determine overall CPU utilization on a server that''s running xen, and log this information to a file - such as sar can do when run in a non-xen environment. I understand that xenmon shows utilization for each domain, but how can I massage this data to get an overall host server utilization? I''m looking for a single value that describes how much of the host

Hi all, Using XenServer with a RHEL6 beta VM, I have sar installed on the hypervisor and VM. If I do a ''md5sum < /dev/urandom'' to spike CPU usage on the VM, I see the indication on the XenCenter performance graph on CPU 0. It does increase quickly. Neither sar output gives any sort of indication that the CPU is being loaded. This VM is pinned to both processor 0 and 1

Hi, I am currently testing running Openstack instance on Cinder volume with libgfapi. This instance is the Windows instance and i found that when running random 4k write workload, the CPU utilization is very high, 90% CPU utilization with about 86% in privileged time. I also tested the workload with volume from NFS and the CPU utilization is only around 5%. For gluster fuse, the CPU utilization

Hi All, I''m a beginner in Xen. Recently I''ve configured one VM (vm03) hosted in my physical machine. I ran the "netperf" workload in the vm01, and used the "top" command in the vm03 to test the behavior of the running workload. Meanwhile, I also used the "xentop" command in domain0 to see the resource consumption in vm03. Interestingly, I found that