What is I/O Performance?
I/O is an abbreviation for Input and Output Performance and means the read and write speed of your hard disk / virtual storage that provides writing files like source code of the generated business apps , pdfs, audio/media files etc, office documents etc.
Why I/O Performance is important
Thousands of small files should created and read again under one second to provide the App Builder a good User Experience and short waiting times.
That depends on a high I/O Performance from your installed virtual storage / nfs storage / hard disk.
Measurement of I/O Performance
To measure the underyling I/O Performance , we use the Linux Kernel Tools to get an reliable answer
Server Througput – Small Files 10kb
dd if=/dev/zero of=/tmp/test2.img bs=10 count=1000 oflag=dsync
1000+0 records in 1000+0 records out 1 0000 bytes (10 kB, 9.8 KiB) copied, 1.80252 s, 5.5 kB/s