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Nutanix X-Ray video Series
A series of videos showing how to install, run, modify and analyze HCI clusters with the Nutanix X-ray tool
Latest Posts
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Identifying Optane drives in Linux
How to identify optane drives in linux OS using lspci.
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How to drop tables for HammerDB TPC-H on SQL Server
Use the following SQL to drop the tables and indexes in the HammerDB TPC-H schema, so that you can re-load…
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Microsoft diskspd Part 3. Oddities and FAQ
Tips and tricks for using diskspd especially useful for those familar with tools like fio
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Microsoft diskspd. Part 2 How to bypass NTFS Cache.
How to ensure performance testing with diskspd is stressing the underlying storage devices, not the OS filesystem.
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Microsoft diskspd. Part 1 Preparing to test.
How to install and setup diskspd before starting your first performance tests and avoiding wrong results due to null byte…
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How to measure database scaling & density on Nutanix HCI platform.
How can database density be measured? How does database performance behave as more DBs are consolidated? What impact does running…
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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…
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Why does my SSD not issue 1MB IO’s?
First things First Why do we tend to use 1MB IO sizes for throughput benchmarking? To achieve the maximum throughput…
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How to identify SSD types and measure performance.
The real-world achievable SSD performance will vary depending on factors like IO size, queue depth and even CPU clock speed.…
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Quick & Dirty Prometheus on OS-X
How to install Prometheus on OS-X Install prometheus $ cd /Users/gary.little/Downloads/prometheus-2.16.0-rc.0.darwin-amd64$ ./prometheus Add a collector/scraper to monitor the OS Prometheus…
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SQL Server uses only one NUMA Node with HammerDB
Some versions of HammerDB (e.g. 3.2) may induce imbalanced NUMA utilization with SQL Server. This can easily be observed with…
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HammerDB: Avoiding bottlenecks in client.
How to avoid bottlenecks in the client generator when measuring database performance with HammerDB
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Measuring CPU performance with X-Ray and pgbench.
An X-ray workload for measuring application density
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How to run vertica vioperf tool
The vertica vioperf tool is used to determine whether the storage you are planning on using is fast enough to…
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Duplicate IP issues with Linux and virtual machine cloning.
TL;DR – Some modern Linux distributions use a newer method of identification which, when combined with DHCP can result in…
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View from Nutanix storage during Postgres DB benchmark
Following on from the previous [1] [2] experiments with Postgres & pgbench. A quick look at how the workload is…