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   2391     ppid: 14170
   2392     tid: 14170
   2393     ptid: 14170
   2394     fork_time_ns: 346637629930119
   2395     sample_info {
   2396       pid: 14170
   2397       tid: 14170
   2398       sample_time_ns: 346637629932764
   2399     }
   2400   }
   2401 }
   2402 events {
   2403   header {
   2404     type: 4
   2405     misc: 0
   2406     size: 48
   2407   }
   2408   exit_event {
   2409     pid: 14170
   2410     ppid: 14170
   2411     tid: 14170
   2412     ptid: 14170
   2413     fork_time_ns: 346637629930119
   2414     sample_info {
   2415       pid: 14170
   2416       tid: 14170
   2417       sample_time_ns: 346637629933960
   2418     }
   2419   }
   2420 }
   2421 events {
   2422   header {
   2423     type: 4
   2424     misc: 0
   2425     size: 48
   2426   }
   2427   exit_event {
   2428     pid: 14170
   2429     ppid: 14170
   2430     tid: 14170
   2431     ptid: 14170
   2432     fork_time_ns: 346637629930119
   2433     sample_info {
   2434       pid: 14170
   2435       tid: 14170
   2436       sample_time_ns: 346637629935338
   2437     }
   2438   }
   2439 }
   2440 timestamp_sec: 0
   2441 stats {
   2442   num_sample_events: 13
   2443   num_mmap_events: 100
   2444   num_fork_events: 0
   2445   num_exit_events: 4
   2446   num_sample_events_mapped: 13
   2447   did_remap: false
   2448 }
   2449 metadata_mask: 16380
   2450 build_ids {
   2451   misc: 1
   2452   pid: 4294967295
   2453   build_id_hash: "c]\236Ohk\363\265\255\360\215zsZR`\211\233\027\246"
   2454   filename: "[kernel.kallsyms]"
   2455   filename_md5_prefix: 280564236321828871
   2456 }
   2457 uint32_metadata {
   2458   type: 7
   2459   data: 4
   2460   data: 4
   2461 }
   2462 uint64_metadata {
   2463   type: 10
   2464   data: 3989076
   2465 }
   2466 event_types {
   2467   id: 0
   2468   name: "cycles"
   2469   name_md5_prefix: 12436270580932095263
   2470 }
   2471 cpu_topology {
   2472   core_siblings: "0-3"
   2473   core_siblings_md5_prefix: 6955206273986717419
   2474   thread_siblings: "0-1"
   2475   thread_siblings: "2-3"
   2476   thread_siblings_md5_prefix: 14045363986529205085
   2477   thread_siblings_md5_prefix: 13991663921307637384
   2478 }
   2479 string_metadata {
   2480   hostname {
   2481     value: "localhost"
   2482     value_md5_prefix: 4763305433620259622
   2483   }
   2484   kernel_version {
   2485     value: "3.8.11"
   2486     value_md5_prefix: 6269914851068073295
   2487   }
   2488   perf_version {
   2489     value: "3.8.11.g047ea3"
   2490     value_md5_prefix: 5145335191364386038
   2491   }
   2492   architecture {
   2493     value: "x86_64"
   2494     value_md5_prefix: 11246003006864564
   2495   }
   2496   cpu_description {
   2497     value: "Intel(R) Core(TM) i5-2467M CPU @ 1.60GHz"
   2498     value_md5_prefix: 11610793089366470376
   2499   }
   2500   cpu_id {
   2501     value: "GenuineIntel,6,42,7"
   2502     value_md5_prefix: 17799137988201876362
   2503   }
   2504   perf_command_line_token {
   2505     value: "/usr/sbin/perf"
   2506     value_md5_prefix: 8922525626614715891
   2507   }
   2508   perf_command_line_token {
   2509     value: "record"
   2510     value_md5_prefix: 16003524724320237622
   2511   }
   2512   perf_command_line_token {
   2513     value: "-o"
   2514     value_md5_prefix: 12893035396610391846
   2515   }
   2516   perf_command_line_token {
   2517     value: "perf.data.singleprocess.next"
   2518     value_md5_prefix: 14066306073220417805
   2519   }
   2520   perf_command_line_token {
   2521     value: "--"
   2522     value_md5_prefix: 14964084598567107715
   2523   }
   2524   perf_command_line_token {
   2525     value: "echo"
   2526     value_md5_prefix: 14677546575749228893
   2527   }
   2528   perf_command_line_whole {
   2529     value: "/usr/sbin/perf record -o perf.data.singleprocess.next -- echo"
   2530     value_md5_prefix: 5824131809857580979
   2531   }
   2532 }
   2533