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\

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:


For further reading: Link

Now file copy over network is kind fun again… 🙂

Storage IO messen

Einige Dinge zum Plattendurchsatz:

Storage Performance Council – SPC


ElasticSky IOPS Berechnung:

Transaction Processing Performance Council – TPC

Ein paar Tools:

IOzone – Kostenloser Dateisystembenchmark

SQLIO – Disk Subsystem Benchmark Tool

ioMeter – Iometer is an I/O subsystem measurement and characterization tool

Bonnie++ – Bonnie++ is a benchmark suite that is aimed at performing a number of simple tests of hard drive and file system performance

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

Exchange Server Stress -This tool simulates large numbers of client sessions running on Exchange Server 2007

LoadSim — Exchange Server 2003 Stresstest Tool

VMware IO-Analyzer




Netzwerkbandbreite ermitteln

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

… recht nützliche Einführung in die Benutzung von jPerf:


DSCP ToS QoS Presidence Comparison Chart