OVHcloud Metal Instances - sysbench RAM

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sysbench RAM is micro-benchmark part of the sysbench command line. Its goal is to stress volatile memory in write or read access and report performance as MB/sec

Our goal is not to reach the maximum bandwidth, so our configuration uses the default 1KB block, a number of thread equal to the CPU and read then write access. Below, you'll find an example of configuration

sysbench --threads=$cpu_number --time=60 memory --memory-oper=$access run
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null, "units": null, "minRange": null }, "yAxis": [ { "title": { "text": [ "RAM bandwidth in KB/sec<br>Higher is better" ], "useHTML": false, "style": { "color": "#666666" } }, "categories": [ "readwrite" ], "plotLines": null, "plotBands": null, "lineWidth": null, "tickInterval": 5000, "tickLength": 10, "floor": null, "ceiling": null, "gridLineInterpolation": null, "gridLineWidth": 1, "gridLineColor": "#CCC", "min": null, "max": 78810.46, "minorTickInterval": null, "minorTickWidth": 0, "minTickInterval": null, "startOnTick": true, "endOnTick": null, "minRange": null, "type": "linear", "tickmarkPlacement": null, "labels": { "enabled": true, "formatter": ":abs", "style": { "fontSize": "14px" }, "useHTML": false } }, { "title": { "enabled": false }, "categories": [ "readwrite" ], "plotLines": null, "plotBands": null, "lineWidth": null, "tickInterval": 5000, "tickLength": 10, "floor": null, "ceiling": null, "gridLineInterpolation": null, "gridLineWidth": 1, "gridLineColor": "#CCC", "min": 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Cloud Mercato's assertions

Similar to other tests AWS proposes the best performance but from memory-intensive workload a single machine with a high number of RAM deliver the best performance:

  • With read operation, m6i.metal is 5.8x faster
  • With write operations, 2x faster