[
{"name":"process_name","ph":"M","pid":1,"tid":0,"args":{"name":"worker 127.0.0.1:40707"}},
{"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":314.961,"dur":117.001,"args":{"object":10166726625207517185}},
{"name":"history::read_history(::String)","ph":"X","pid":1,"tid":1,"ts":431.962,"dur":488066.585,"args":{"object":10166726625207517185,"queued_after_submit_us":8.709,"dispatch_wait_us":8.833,"settle_after_end_us":189.293}},
{"name":"end","ph":"i","ts":0,"pid":0,"tid":0,"s":"g"}
]