AWS c6g vs c7g - sysbench CPU

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Sysbench CPU is an open source micro benchmark tool. Its job is to find the highest number of prime number during a certain amount of time. This test outputs a rate comparable across our different VMs and being a simple operation, it doesn't involve thread cooperation nor intensive RAM usage.

Our testing configuration use a number of thread to 1 thread up to 2x the CPU number and prime number under 64000. Here's a template of command line:

sysbench --threads=$thread --time=60 cpu --cpu-max-prime=64000 run

{ "configuration": { "chart": { "type": "line", "polar": false, "zoomType": "", "options3d": {}, "height": 600, "width": null, "margin": null, "inverted": false, "zooming": {} }, "credits": { "enabled": false }, "title": { "text": "" }, "colorAxis": null, "subtitle": { "text": "" }, "xAxis": { "title": { "text": [ "Number of thread" ], "useHTML": false, "style": { "color": "#666666" } }, "categories": [ 1, 2, 3, 4, 6, 8, 12, 16 ], "lineWidth": 1, "tickInterval": null, "tickWidth": 1, "tickLength": 10, "tickPixelInterval": null, "plotLines": null, "labels": { "enabled": true, "format": null, "formatter": "", "style": { "color": "#666666", "cursor": "default", "fontSize": "11px" }, "useHTML": false, "step": 0 }, "plotBands": null, "visible": true, "floor": null, "ceiling": null, "type": "linear", "min": null, "gridLineWidth": null, "gridLineColor": null, "minorTickInterval": null, "minorTickWidth": 0, "minTickInterval": null, "startOnTick": true, "endOnTick": null, "tickmarkPlacement": null, "units": null, "minRange": null }, "yAxis": { "title": { "text": [ "Op/sec" ], "useHTML": false, "style": { "color": "#666666" } }, "categories": [], "plotLines": null, "plotBands": null, "lineWidth": null, "tickInterval": 200, "tickLength": 10, "floor": null, "ceiling": null, "gridLineInterpolation": null, "gridLineWidth": 1, "gridLineColor": "#CCC", "min": 0, "max": null, "minorTickInterval": null, "minorTickWidth": 0, "minTickInterval": null, "startOnTick": true, "endOnTick": null, "minRange": null, "type": "linear", "tickmarkPlacement": null, "labels": { "enabled": true, "formatter": null, "style": { "color": "#666666", "cursor": "default", "fontSize": "11px" }, "useHTML": false } }, "zAxis": { "title": { "text": "Op/sec" } }, "plotOptions": { "series": { "dataLabels": { "enabled": false, "format": null, "distance": 30, "align": "center", "inside": null, "allowOverlap": false, "style": { "fontSize": "11px" } }, "showInLegend": null, "turboThreshold": 1000, "stacking": "", "groupPadding": 0, "centerInCategory": false, "findNearestPointBy": "x" } }, "navigator": { "enabled": false }, "scrollbar": { "enabled": false }, "rangeSelector": { "enabled": false, "inputEnabled": false }, "legend": { "enabled": true, "maxHeight": null, "align": "center", "verticalAlign": "bottom", "layout": "horizontal", "width": null, "margin": 12, "reversed": false }, "series": [ { "name": "Amazon Web Services a1.2xlarge", "verbose": "Amazon Web Services a1.2xlarge", "data": [ { "y": 182.866 }, { "y": 365.963 }, { "y": 549.0559999999999 }, { "y": 731.846 }, { "y": 1097.982 }, { "y": 1463.863 }, { "y": 1463.664 }, { "y": 1463.601 } ], "color": "#f7981d", "marker": { "enabled": true } }, { "name": "Amazon Web Services c6g.2xlarge", "verbose": "Amazon Web Services c6g.2xlarge", "data": [ { "y": 211.66500000000002 }, { "y": 423.396 }, { "y": 635.062 }, { "y": 846.676 }, { "y": 1270.183 }, { "y": 1693.6200000000001 }, { "y": 1693.118 }, { "y": 1692.929 } ], "color": "#f7981d", "marker": { "enabled": true } }, { "name": "Amazon Web Services c7g.2xlarge", "verbose": "Amazon Web Services c7g.2xlarge", "data": [ { "y": 223.82399999999998 }, { "y": 447.64 }, { "y": 671.4739999999999 }, { "y": 895.392 }, { "y": 1342.9450000000002 }, { "y": 1790.923 }, { "y": 1790.679 }, { "y": 1790.5439999999999 } ], "color": "#f7981d", "marker": { "enabled": true } } ], "drilldown": {}, "tooltip": { "enabled": true, "useHTML": false, "format": null, "headerFormat": "", "pointFormat": "<span style=\"color:{series.color}\">{series.name}</span>: <b>{point.y:.2f}</b><br/>", "footerFormat": "", "shared": false, "outside": false, "valueDecimals": null, "split": false }, "annotations": null }, "hc_type": "chart", "id": "40511639264856786606432454935855346582" }

Observations:

  • All VMs scale up linearly
  • From a1 to c6g, there is boost of +15%
  • +5% c6g to c7g