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Possible memory leak in vega headless renderer
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| //var heapdump = require('heapdump'); | |
| var util = require('util'); | |
| var vg = require('vega'); | |
| var d3 = require('d3'); | |
| var spec = { | |
| "width": 400, | |
| "height": 200, | |
| "padding": {"top": 10, "left": 30, "bottom": 30, "right": 10}, | |
| "data": [ | |
| { | |
| "name": "table", | |
| "values": [ | |
| {"x": 1, "y": 28}, {"x": 2, "y": 55}, | |
| {"x": 3, "y": 43}, {"x": 4, "y": 91}, | |
| {"x": 5, "y": 81}, {"x": 6, "y": 53}, | |
| {"x": 7, "y": 19}, {"x": 8, "y": 87}, | |
| {"x": 9, "y": 52}, {"x": 10, "y": 48}, | |
| {"x": 11, "y": 24}, {"x": 12, "y": 49}, | |
| {"x": 13, "y": 87}, {"x": 14, "y": 66}, | |
| {"x": 15, "y": 17}, {"x": 16, "y": 27}, | |
| {"x": 17, "y": 68}, {"x": 18, "y": 16}, | |
| {"x": 19, "y": 49}, {"x": 20, "y": 15} | |
| ] | |
| } | |
| ], | |
| "scales": [ | |
| { | |
| "name": "x", | |
| "type": "ordinal", | |
| "range": "width", | |
| "domain": {"data": "table", "field": "data.x"} | |
| }, | |
| { | |
| "name": "y", | |
| "range": "height", | |
| "nice": true, | |
| "domain": {"data": "table", "field": "data.y"} | |
| } | |
| ], | |
| "axes": [ | |
| {"type": "x", "scale": "x"}, | |
| {"type": "y", "scale": "y"} | |
| ], | |
| "marks": [ | |
| { | |
| "type": "rect", | |
| "from": {"data": "table"}, | |
| "properties": { | |
| "enter": { | |
| "x": {"scale": "x", "field": "data.x"}, | |
| "width": {"scale": "x", "band": true, "offset": -1}, | |
| "y": {"scale": "y", "field": "data.y"}, | |
| "y2": {"scale": "y", "value": 0} | |
| }, | |
| "update": { | |
| "fill": {"value": "steelblue"} | |
| }, | |
| "hover": { | |
| "fill": {"value": "red"} | |
| } | |
| } | |
| } | |
| ] | |
| }; | |
| var opts = { | |
| spec: spec, | |
| renderer: 'svg' | |
| }; | |
| function run(){ | |
| vg.headless.render(opts, function(err, result) { | |
| if (err) { | |
| throw err | |
| }; | |
| //heapdump.writeSnapshot(); | |
| console.log(util.inspect(process.memoryUsage())); | |
| setTimeout(run, 1000); | |
| }); | |
| } | |
| run(); |
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