Archiv der Kategorie: Performance

Website Availability Monitoring

Check, if a website is still reachable – over proxy connection with wget – on windows !!

Wget for Windows ist avalable here.

wget.exe -Y 1 -d -v -S -O D:\Programme\wget\index.shtml -a D:\Programme\wget\www.bahn.de.log http://www.bahn.de/p/view/index.shtml

Had to set the environment variable http_proxy=http://proxy.youdomain.somewhere:Port

The used paramters are explained here.

 

 

W2K8R2: Filecopy over network slow

Problem: File copy on a Windows Server 2008 R2 x64 from a Windows Server 2003 R2 x64 network share is very slow.

Solution (in my environment): Fire the following command as an administrator and reboot the server:

netsh interface tcp set global autotuninglevel=disabled

On a german OS this leads to the following state:
Before:

After:

For further reading: Link

Now file copy over network is kind fun again… 🙂

Storage IO messen

Einige Dinge zum Plattendurchsatz:

Storage Performance Council – SPC
http://www.storageperformance.org

 

ElasticSky IOPS Berechnung:

http://www.elasticsky.de/2012/06/iops-berechnung/

Transaction Processing Performance Council – TPC
www.tpc.org

Ein paar Tools:

IOzone – Kostenloser Dateisystembenchmark
http://www.iozone.org/

SQLIO – Disk Subsystem Benchmark Tool
http://www.microsoft.com/download/en/details.aspx?id=20163

ioMeter – Iometer is an I/O subsystem measurement and characterization tool
http://www.iometer.org/

Bonnie++ – Bonnie++ is a benchmark suite that is aimed at performing a number of simple tests of hard drive and file system performance
http://www.coker.com.au/bonnie++/

Oracle Orion – ORION (Oracle I/O Calibration Tool) is a standalone tool for calibrating the I/O performance for storage systems that are intended to be used for Oracle databases
http://www.oracle.com/technetwork/topics/index-089595.html

Exchange Server Stress -This tool simulates large numbers of client sessions running on Exchange Server 2007
http://www.microsoft.com/en-us/download/details.aspx?id=20547

LoadSim — Exchange Server 2003 Stresstest Tool
http://www.microsoft.com/en-us/download/details.aspx?id=474

VMware IO-Analyzer
https://labs.vmware.com/flings/io-analyzer

 

 

JetStress,

Netzwerkbandbreite ermitteln

Nette Tools, um die Netzwerkbandbeite zwischen 2 Stationen zu messen:

jPerf:
http://code.google.com/p/xjperf/
… recht nützliche Einführung in die Benutzung von jPerf:
http://www.nwlab.net/know-how/JPerf/

NetIO:
http://www.nwlab.net/art/netio/netio.html

DSCP ToS QoS Presidence Comparison Chart

Quelle: http://bytesolutions.com/Support/Knowledgebase/KB_Viewer/ArticleId/34/DSCP-TOS-CoS-Presidence-conversion-chart

dscp_tos_qos_conversonchartqosforipvideoconferencing