OVHcloud Metal Instances - IOPS
Go back to listI/O Per Seconds is one of the most used value to evaluate the performance of a volume, raw SSD, magnetic or Block Storage. The average and maximum IOPS gives a good preview of what will be the speed of a database or any disk-intensive task.
To measure IOPS, we use the well known tool Flexible I/O Tester (FIO) the following configuration:
- 4KB blocks
- Random access
- Read then Write
- Direct access to device without filesystems
- libaio engine
{
"configuration": {
"chart": {
"type": "bar",
"polar": false,
"zoomType": "",
"options3d": {},
"height": 670,
"width": null,
"margin": null,
"inverted": false,
"zooming": {}
},
"credits": {
"enabled": false
},
"title": {
"text": ""
},
"colorAxis": null,
"subtitle": {
"text": ""
},
"xAxis": {
"title": {
"text": [
""
],
"useHTML": false,
"style": {
"color": "#666666"
}
},
"categories": [
"provider__name",
"flavor__name",
"volume_type_name"
],
"lineWidth": 1,
"tickInterval": null,
"tickWidth": 0,
"tickLength": 10,
"tickPixelInterval": null,
"plotLines": null,
"labels": {
"enabled": false,
"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": [
"IOPS - Higher is better<br>Read colored, Write darker"
],
"useHTML": false,
"style": {
"color": "#666666"
}
},
"categories": [
"readwrite"
],
"plotLines": null,
"plotBands": null,
"lineWidth": null,
"tickInterval": 10000,
"tickLength": 10,
"floor": null,
"ceiling": null,
"gridLineInterpolation": null,
"gridLineWidth": 1,
"gridLineColor": "#CCC",
"min": null,
"max": 655075,
"minorTickInterval": null,
"minorTickWidth": 0,
"minTickInterval": null,
"startOnTick": true,
"endOnTick": null,
"minRange": null,
"type": "linear",
"tickmarkPlacement": null,
"labels": {
"enabled": true,
"formatter": ":abs",
"style": {
"color": "#666666",
"cursor": "default",
"fontSize": "11px"
},
"useHTML": false
}
},
{
"title": {
"enabled": false
},
"categories": [
"readwrite"
],
"plotLines": null,
"plotBands": null,
"lineWidth": null,
"tickInterval": 10000,
"tickLength": 10,
"floor": null,
"ceiling": null,
"gridLineInterpolation": null,
"gridLineWidth": 1,
"gridLineColor": "#CCC",
"min": null,
"max": 655075,
"minorTickInterval": null,
"minorTickWidth": 0,
"minTickInterval": null,
"startOnTick": true,
"endOnTick": null,
"minRange": null,
"type": "linear",
"tickmarkPlacement": null,
"labels": {
"enabled": false
},
"inkedTo": 0
}
],
"zAxis": {
"title": {
"text": "IOPS - Higher is better<br>Read colored, Write darker"
}
},
"plotOptions": {
"series": {
"dataLabels": {
"enabled": true,
"format": "{series.name}",
"distance": 30,
"align": "left",
"inside": null,
"allowOverlap": false,
"style": {
"fontSize": "17px"
}
},
"showInLegend": null,
"turboThreshold": 1000,
"stacking": "normal",
"groupPadding": 0,
"centerInCategory": false,
"findNearestPointBy": "x"
}
},
"navigator": {
"enabled": false
},
"scrollbar": {
"enabled": false
},
"rangeSelector": {
"enabled": false,
"inputEnabled": false
},
"legend": {
"enabled": false,
"maxHeight": null,
"align": "center",
"verticalAlign": "bottom",
"layout": "horizontal",
"width": null,
"margin": 12,
"reversed": false
},
"series": [
{
"name": "Amazon Web Services m6i.metal GP3 16000 IOPS",
"verbose": "Amazon Web Services m6i.metal GP3 16000 IOPS Read",
"data": [
{
"x": 0,
"y": 16559.75,
"verbose": 16559.75
}
],
"color": "rgba(247, 152, 29, 0.8)",
"zIndex": 10
},
{
"name": "Amazon Web Services m6i.metal GP3 16000 IOPS",
"verbose": "Amazon Web Services m6i.metal GP3 16000 IOPS Write",
"data": [
{
"x": 0,
"y": 16568.5,
"verbose": 16568.5
}
],
"pointPlacement": 0.1,
"color": "#9e9fa3",
"linkedTo": ":previous",
"yAxis": 1,
"dataLabels": {
"enabled": false,
"style": {
"textAlign": "left"
}
}
},
{
"name": "OVHcloud BM-L1 BM-L1 SSD",
"verbose": "OVHcloud BM-L1 BM-L1 SSD Read",
"data": [
{
"x": 1,
"y": 653487.8,
"verbose": 653487.8
}
],
"color": "rgba(72, 72, 72, 0.8)",
"zIndex": 10
},
{
"name": "OVHcloud BM-L1 BM-L1 SSD",
"verbose": "OVHcloud BM-L1 BM-L1 SSD Write",
"data": [
{
"x": 1,
"y": 327324.0,
"verbose": 327324.0
}
],
"pointPlacement": 0.1,
"color": "#9e9fa3",
"linkedTo": ":previous",
"yAxis": 1,
"dataLabels": {
"enabled": false,
"style": {
"textAlign": "left"
}
}
},
{
"name": "OVHcloud BM-M1 BM-M1 SSD",
"verbose": "OVHcloud BM-M1 BM-M1 SSD Read",
"data": [
{
"x": 2,
"y": 603066.15,
"verbose": 603066.15
}
],
"color": "rgba(72, 72, 72, 0.8)",
"zIndex": 10
},
{
"name": "OVHcloud BM-M1 BM-M1 SSD",
"verbose": "OVHcloud BM-M1 BM-M1 SSD Write",
"data": [
{
"x": 2,
"y": 328107.1,
"verbose": 328107.1
}
],
"pointPlacement": 0.1,
"color": "#9e9fa3",
"linkedTo": ":previous",
"yAxis": 1,
"dataLabels": {
"enabled": false,
"style": {
"textAlign": "left"
}
}
},
{
"name": "OVHcloud BM-S1 BM-S1 SSD",
"verbose": "OVHcloud BM-S1 BM-S1 SSD Read",
"data": [
{
"x": 3,
"y": 653091.7,
"verbose": 653091.7
}
],
"color": "rgba(72, 72, 72, 0.8)",
"zIndex": 10
},
{
"name": "OVHcloud BM-S1 BM-S1 SSD",
"verbose": "OVHcloud BM-S1 BM-S1 SSD Write",
"data": [
{
"x": 3,
"y": 327775.8,
"verbose": 327775.8
}
],
"pointPlacement": 0.1,
"color": "#9e9fa3",
"linkedTo": ":previous",
"yAxis": 1,
"dataLabels": {
"enabled": false,
"style": {
"textAlign": "left"
}
}
}
],
"drilldown": {},
"tooltip": {
"enabled": true,
"useHTML": false,
"format": null,
"headerFormat": "",
"pointFormat": "<span style=\"color:{series.color}\">{series.name}</span>: <b>{point.y:.1f} IOPS</b><br/>",
"footerFormat": "",
"shared": false,
"outside": false,
"valueDecimals": null,
"split": false
},
"annotations": null
},
"hc_type": "chart",
"id": "50764685348930266940852964635550191205"
}
Cloud Mercato's assertions
Block storage and Local SSD are of course not directly comparable. The first one is a real Cloud service with its flexibility and ecosystem, when the second is a classical hardware provided to you.
As we can see, the physical device offer the best performance for OVHcloud:
- 650K IOPS in read
- 325K IOPS in write