From Fedora Project Wiki

Performance observation short cuts for noobs

Introduction

Purpose

Scope

Acronyms, descriptions

References

http://www.linux-kvm.org/page/Documents
KVM documentation page.
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Open issues

Installing the packages needed

yum install sysstat
This contains 'sar' and 'iostat'

Tools

Operating Environment

perf
Performance analysis tools for Linux.
  • e.g. perf top

Storage

Network

Virtualiser

xentrace
See also: [xentrace example]
xentrace_format
kmv_stat
in qemu-kvm-tools package.

Configuring the xentrace

  1. get the xentrace_formats file
  2. set the masks
    • See also: [Classes (Masks)]
    • ./xen/include/public/trace.h
    • ./xen/include/asm-x86/hvm/trace.h
      • find . | xargs grep HVMTRACE_2D

Administration

Scratch pad

INSTALLATION

 yum install sysstat
   sar and iostat

XOSview GKRellM gnuplot


vmstat mpstat -P ALL top sar iostat ps


RAM vmstat -s free


cpu sar -P ALL -u ALL 10 10



NETWORK netstat

-i
-a
-s
-f

iostat ttcp


IO Performance iostat

-x 

vmstat sar nfsstat bonnie++


TUNING MME sysctl and sysctl.conf


Performmance measurements on various virtualization soulutions

Key kernel statistics

CPU

Softirqs

Backen interrupt handlers.

Trouble shooting