[
{"name":"process_name","ph":"M","pid":1,"tid":0,"args":{"name":"worker 127.0.0.1:42529"}},
{"name":"thread_name","ph":"M","pid":1,"tid":1,"args":{"name":"running"}},
{"name":"thread_name","ph":"M","pid":1,"tid":2,"args":{"name":"waiting for inputs"}},
{"name":"inputs","ph":"X","pid":1,"tid":2,"ts":344.793,"dur":115.458,"args":{"object":10587109502924881921}},
{"name":"history::read_history(::String)","ph":"X","pid":1,"tid":1,"ts":460.251,"dur":714366.889,"args":{"object":10587109502924881921,"queued_after_submit_us":9.042,"dispatch_wait_us":8.958,"settle_after_end_us":122.084}},
{"name":"end","ph":"i","ts":0,"pid":0,"tid":0,"s":"g"}
]