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; http://www.linux-kvm.org/page/Documents: KVM documentation page. | ; http://www.linux-kvm.org/page/Documents: KVM documentation page. | ||
; | ; [http://www.youtube.com/watch?v=t0XDEAECObA O'Reilly Webcast: When Times Get Tough, The Tough Get Tuning]: Dee-Ann LeBlanc of Splunk shows how you can get better performance from your hardware without throwing dollars at it. | ||
=== Open issues === | === Open issues === | ||
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* http://wiki.xensource.com/xenwiki/XendInternalsDebugging | * http://wiki.xensource.com/xenwiki/XendInternalsDebugging | ||
; xentrace: See also: | ; xentrace: See also: [http://kibab.homeip.net/hw/vienna_hw6/tut_xentrace.html xentrace example] | ||
; xentrace_format: | ; xentrace_format: | ||
; kmv_stat: in qemu-kvm-tools package. | ; kmv_stat: in qemu-kvm-tools package. | ||
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#* Get the source code at: http://www.xen.org/products/xen_archives.html | #* Get the source code at: http://www.xen.org/products/xen_archives.html | ||
# set the masks | # set the masks | ||
#* See also: | #* See also: [http://support.citrix.com/article/CTX121583 Event Classes (Masks)] | ||
#* ./xen/include/public/trace.h | #* ./xen/include/public/trace.h | ||
#* ./xen/include/asm-x86/hvm/trace.h | #* ./xen/include/asm-x86/hvm/trace.h | ||
Revision as of 06:59, 22 August 2011
Performance observation short cuts for noobs
Introduction
Purpose
Scope
Acronyms, descriptions
References
- http://www.linux-kvm.org/page/Documents
- KVM documentation page.
- O'Reilly Webcast: When Times Get Tough, The Tough Get Tuning
- Dee-Ann LeBlanc of Splunk shows how you can get better performance from your hardware without throwing dollars at it.
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
- http://www.xen.org/files/xensummit_intel09/xen-debugging.pdf
- http://xenbits.xensource.com/ext/xenalyze.hg
- http://wiki.xensource.com/xenwiki/XendInternalsDebugging
- xentrace
- See also: xentrace example
- xentrace_format
- kmv_stat
- in qemu-kvm-tools package.
Configuring the xentrace
- get the xentrace_formats file
- extract the tools/xentrace/formats file from the source code.
- Get the source code at: http://www.xen.org/products/xen_archives.html
- set the masks
- See also: Event 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
- Virtual machines performance comparison: vmware vs virtualbox vs kvm vs xen - I/O benchmarks: Windows 2008 installation time
- Optimizing Network Virtualization in Xen
Key kernel statistics
CPU
Softirqs
Backen interrupt handlers.