How To Test Disk Performance (I/O Speed) of Your Server

We can test server disk read / write speed from SSH. Below command will show the speed that the server can read and write a 1GB file.

Login to your server via SSH and run below command:

dd if=/dev/zero of=sb-io-test bs=1M count=1k conv=fdatasync

Higher scores is better.

SSD disk will give you very fast read / write speed compared to SATA disks. There are many providers offering SSD VPS like DigitalOcean, RamNode etc

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1 Comment

  • fine hdd benchmark.. But please add a notice that there stays 1,1GB file in logged-in user. Means if you are logged as root, then there is file in /root/. etc…

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