Timing cached reads: 1590 MB in 2.00 seconds = 795.37 MB/sec Read Performance sudo hdparm -tT /dev/sda The fist disk is a Toshiba Canvio Basic 1TB USB3.0 external disk. With dd, we will both make a test for the disk’s local performance, and we will also write data to a SAMBA share to measure the network performance. With dd, we will write 5GByte of data to the disk - the command is dd bs=10M count=500 if=/dev/zero of=PATH_TO_OUTPUT_FILE. With hdparm, we will test the device reads and cache reads performance - the command is hdparm -tT DEVICE_NAME. To test the drive performance with these tools, they will be called in a specific manner. dd is a command line tool for reading and writing raw device data, and can be used for tasks such as making backups of the boot sector or of the entire hard disk.hdparm is a multifunctional tool for configuration and performance measurements, It will evaluate the disks read and write speed, as well as to access aspects like its power management capabilities and direct memory access configuration.Performance Measurementsįor speed tests, the two essential tools are Hdparm and dd: All instructions should work with other Linux distributions and newer versions as well. The technical context of this article is Raspberry Pi OS. You will learn the essential Linux commands to make disk performance measurements locally and over the network, and learn about the physical speed limits. This article briefly shows how to measure and improve the HDD performance of your server. ![]() Before installing the system, I wanted to see the performance differences of various disk, their read speed, and their local and remote, via SAMBA, write speed. In my IOT Stack, a Raspberry Pi with an external connected disk serves as a SAMBA server.
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