[
{"name":"process_name","ph":"M","pid":1,"tid":0,"args":{"name":"worker 127.0.0.1:40507"}},
{"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":378.336,"dur":112.834,"args":{"object":16352822035145031681}},
{"name":"history::read_history(::String)","ph":"X","pid":1,"tid":1,"ts":491.17,"dur":564171.391,"args":{"object":16352822035145031681,"queued_after_submit_us":13.0,"dispatch_wait_us":7.458,"settle_after_end_us":155.459}},
{"name":"end","ph":"i","ts":0,"pid":0,"tid":0,"s":"g"}
]