[
{"name":"process_name","ph":"M","pid":1,"tid":0,"args":{"name":"worker 127.0.0.1:39863"}},
{"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":324.209,"dur":116.042,"args":{"object":10489734554145783809}},
{"name":"history::read_history(::String)","ph":"X","pid":1,"tid":1,"ts":440.251,"dur":466836.645,"args":{"object":10489734554145783809,"queued_after_submit_us":9.125,"dispatch_wait_us":7.917,"settle_after_end_us":172.209}},
{"name":"end","ph":"i","ts":0,"pid":0,"tid":0,"s":"g"}
]