n0derunner

    How to run vdbench benchmark on any HCI with X-Ray

    Published: (Updated: ) in X-Ray, , by gary. 2 Comments on How to run vdbench benchmark on any HCI with X-Ray.

    Many storage performance testers are familiar with vdbench, and wish to use it to test Hyper-Converged (HCI) performance. To accurately performance test HCI you need to deploy workloads on all HCI nodes. However, deploying multiple VMs and coordinating vdbench can be tricky, so with X-ray we provide an easy way to run vdbench at scale. […]

    Things to know when using vdbench.

    Published: (Updated: ) in vdbench, , by gary.

    Recently I found that vdbench was not giving me the amount of outstanding IO that I had intended to configure by using the “threads=N” parameter. It turned out that with Linux, most of the filesystems (ext2, ext3 and ext4) do not support concurrent directIO, although they do support directIO. This was a bit of a […]