Test the IO performance of hard-disks/disks using Linux

Measurements by means of dd Measure writing performance. This test can also be used with CIFS and NFS andis relatively objective: The parameter fdatasync only ends the =dd= command when the data has beencompletely synced. Instead, you could also use oflag=dsync which also takescaches into account and waits until they have been written. To test … Read more

Install Steam on Debian without using an installer

Firstly, during the Steam setup, I’m acting as the user tester. Any other user can be used instead of tester, but in that case, all path references in this documentation must be adjusted accordingly. First, download the official Steam installer from their website. This will place the file steam.deb in the downloads folder. If you … Read more

Generate spectrograms with arecord, sox and ffmpeg/avconv

Create a spectrogram (Image) The following command creates a WAV file using Alsa (Device 2.0). In thiscase, Sox is additionally piped, which is completely unnecessary here,however, Sox could still add various filters to the resulting test.wavchange: Using the file test.wav that has just been created, a spectrogram is now generated: The following command creates a … Read more