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Off-CPU data model for UI consumption
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| //Frame dictionary | |
| {"FrameId1": "java.lang.blah.blah:80", "...": "..."} | |
| //Syscall dictionary | |
| {"SycallId1": "open()", "...": "..."} | |
| //Data model for a unique backtrace in off-cpu stack sample tree | |
| { | |
| backtrace_id: 35, | |
| ctx_switches : { | |
| voluntary: { | |
| count: 95, | |
| latency_usec: { | |
| "max" : 3500, | |
| "q999": 3450, | |
| "q99" : 3100, | |
| "q98" : 2800, | |
| "q95" : 1900, | |
| "q90" : 1800, | |
| "q75" : 1600, | |
| "median" : 1300, | |
| "mean": 1500, | |
| "sd" : 700 }, | |
| sched_delay_usec: { | |
| "max" : 200, | |
| "q999": 150, | |
| "q99" : 120, | |
| "q98" : 100, | |
| "q95" : 95, | |
| "q90" : 80, | |
| "q75" : 40, | |
| "median" : 25, | |
| "mean": 35, | |
| "sd" : 14 }, | |
| migration_count: 15 }, | |
| involuntary: { | |
| count: 22, | |
| latency_usec: { | |
| "max" : 350, | |
| "q999": 345, | |
| "q99" : 310, | |
| "q98" : 280, | |
| "q95" : 190, | |
| "q90" : 180, | |
| "q75" : 160, | |
| "median" : 130, | |
| "mean": 150, | |
| "sd" : 70 }, | |
| migration_count: 3 }, | |
| syscalls: { | |
| distinguished: [// "all entries with total time = mean * count >= q20(total-time distribution)" | |
| { | |
| id: 10, | |
| count: 103, | |
| latency_us: { | |
| "max" : 100, | |
| "q999": 50, | |
| "q99" : 20, | |
| "q98" : 10, | |
| "q95" : 7, | |
| "q90" : 6, | |
| "q75" : 5, | |
| "median" : 4, | |
| "mean": 10, | |
| "sd" : 8 }}, | |
| { | |
| id: 15, | |
| count: 56, | |
| latency_us: { | |
| "max" : 100, | |
| "q999": 50, | |
| "q99" : 20, | |
| "q98" : 10, | |
| "q95" : 7, | |
| "q90" : 6, | |
| "q75" : 5, | |
| "median" : 4, | |
| "mean": 10, | |
| "sd" : 8 }} | |
| ], | |
| others: { | |
| ids: [19, 54, 12, 7], | |
| count: 95, | |
| latency_us: { | |
| "max" : 100, | |
| "q999": 50, | |
| "q99" : 20, | |
| "q98" : 10, | |
| "q95" : 7, | |
| "q90" : 6, | |
| "q75" : 5, | |
| "median" : 4, | |
| "mean": 10, | |
| "sd" : 8 }}}}} |
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