[GHC] #14660: Improve +RTS -t --machine-readable

[GHC]

#14660: Improve +RTS -t --machine-readable
-------------------------------------+-------------------------------------
        Reporter:  duog              |                Owner:  (none)
            Type:  task              |               Status:  closed
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Runtime System    |              Version:  8.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4303
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"f0b258bc7e2d4ef32a20c61b7285a21f7680660e/ghc" f0b258b/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="f0b258bc7e2d4ef32a20c61b7285a21f7680660e"
 rts, base: Refactor stats.c to improve --machine-readable report

 There should be no change in the output of the '+RTS -s' (summary)
 report, or
 the 'RTS -t' (one-line) report.

 All data shown in the summary report is now shown in the machine
 readable
 report.

 All data in RTSStats is now shown in the machine readable report.

 init times are added to RTSStats and added to GHC.Stats.

 Example of the new output:
 ```
  [("bytes allocated", "375016384")
  ,("num_GCs", "113")
  ,("average_bytes_used", "148348")
  ,("max_bytes_used", "206552")
  ,("num_byte_usage_samples", "2")
  ,("peak_megabytes_allocated", "6")
  ,("init_cpu_seconds", "0.001642")
  ,("init_wall_seconds", "0.001027")
  ,("mut_cpu_seconds", "3.020166")
  ,("mut_wall_seconds", "0.757244")
  ,("GC_cpu_seconds", "0.037750")
  ,("GC_wall_seconds", "0.009569")
  ,("exit_cpu_seconds", "0.000890")
  ,("exit_wall_seconds", "0.002551")
  ,("total_cpu_seconds", "3.060452")
  ,("total_wall_seconds", "0.770395")
  ,("major_gcs", "2")
  ,("allocated_bytes", "375016384")
  ,("max_live_bytes", "206552")
  ,("max_large_objects_bytes", "159344")
  ,("max_compact_bytes", "0")
  ,("max_slop_bytes", "59688")
  ,("max_mem_in_use_bytes", "6291456")
  ,("cumulative_live_bytes", "296696")
  ,("copied_bytes", "541024")
  ,("par_copied_bytes", "493976")
  ,("cumulative_par_max_copied_bytes", "104104")
  ,("cumulative_par_balanced_copied_bytes", "274456")
  ,("fragmentation_bytes", "2112")
  ,("alloc_rate", "124170795")
  ,("productivity_cpu_percent", "0.986838")
  ,("productivity_wall_percent", "0.982935")
  ,("bound_task_count", "1")
  ,("sparks_count", "5836258")
  ,("sparks_converted", "237")
  ,("sparks_overflowed", "1990408")
  ,("sparks_dud ", "0")
  ,("sparks_gcd", "3455553")
  ,("sparks_fizzled", "390060")
  ,("work_balance", "0.555606")
  ,("n_capabilities", "4")
  ,("task_count", "10")
  ,("peak_worker_count", "9")
  ,("worker_count", "9")
  ,("gc_alloc_block_sync_spin", "162")
  ,("gc_alloc_block_sync_yield", "0")
  ,("gc_alloc_block_sync_spin", "162")
  ,("gc_spin_spin", "18840855")
  ,("gc_spin_yield", "10355")
  ,("mut_spin_spin", "70331392")
  ,("mut_spin_yield", "61700")
  ,("waitForGcThreads_spin", "241")
  ,("waitForGcThreads_yield", "2797")
  ,("whitehole_gc_spin", "0")
  ,("whitehole_lockClosure_spin", "0")
  ,("whitehole_lockClosure_yield", "0")
  ,("whitehole_executeMessage_spin", "0")
  ,("whitehole_threadPaused_spin", "0")
  ,("any_work", "1667")
  ,("no_work", "1662")
  ,("scav_find_work", "1026")
  ,("gen_0_collections", "111")
  ,("gen_0_par_collections", "111")
  ,("gen_0_cpu_seconds", "0.036126")
  ,("gen_0_wall_seconds", "0.036126")
  ,("gen_0_max_pause_seconds", "0.036126")
  ,("gen_0_avg_pause_seconds", "0.000081")
  ,("gen_0_sync_spin", "21")
  ,("gen_0_sync_yield", "0")
  ,("gen_1_collections", "2")
  ,("gen_1_par_collections", "1")
  ,("gen_1_cpu_seconds", "0.001624")
  ,("gen_1_wall_seconds", "0.001624")
  ,("gen_1_max_pause_seconds", "0.001624")
  ,("gen_1_avg_pause_seconds", "0.000272")
  ,("gen_1_sync_spin", "3")
  ,("gen_1_sync_yield", "0")
  ]
 ```

 Test Plan: Ensure that one-line and summary reports are unchanged.

 Reviewers: erikd, simonmar, hvr

 Subscribers: duog, carter, thomie, rwbarton

 GHC Trac Issues: #14660

 Differential Revision: https://phabricator.haskell.org/D4529
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14660#comment:7>
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