[
{"name":"process_name","ph":"M","pid":1,"tid":0,"args":{"name":"worker 127.0.0.1:32921"}},
{"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":274.629,"dur":109.876,"args":{"object":6119813550480293889}},
{"name":"history::read_history(::String)","ph":"X","pid":1,"tid":1,"ts":384.505,"dur":668936.636,"args":{"object":6119813550480293889,"queued_after_submit_us":8.708,"dispatch_wait_us":9.834,"settle_after_end_us":104.46}},
{"name":"end","ph":"i","ts":0,"pid":0,"tid":0,"s":"g"}
]