[
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{"tid": 0,"ts":10,"pid":0,"name":"bar","ph":"C","args": {"value": 2}},
{"tid": 0,"ts":12,"pid":0,"name":"foo","ph":"C","args": {"value": 3}},
{"tid": 1,"ts":15.5,"pid":0,"name":"baz","ph":"X","dur":20},
{"tid": 1,"ts":30,"pid":0,"name":"qux","ph":"X","dur":3},
{"tid": 0,"ts":60,"pid":0,"name":"bar","ph":"C","args": {"value": 4}},
{"tid": 0,"ts":66,"pid":0,"name":"foo","ph":"C","args": {"value": 5}},
{"tid": 0,"ts":77,"pid":0,"name":"bar","ph":"C","args": {"value": 6}}
]