Bug #10817: [PERF] vm3_gc slower

• Status: Closed
• Assignee: ko1 (Koichi Sasada)
• Target version: -
• ruby -v: ruby 2.2.0dev (2014-09-07 trunk 47444)
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[tgxworld (Guo Xiang Tan)]

http://rubybench.org/ruby/ruby/commits?result_type=vm3_gc

When running locally,

benchmark results:
Execution time (sec)
name ruby 2.2.0dev (2014-09-07 trunk 47443) [x86_64-linux]
vm3_gc 1.946

---

benchmark results:
Execution time (sec)
name ruby 2.2.0dev (2014-09-07 trunk 47444) [x86_64-linux]
vm3_gc 2.426

Tracked down to https://github.com/ruby/ruby/commit/123eeb1c1a904923754ce65148dbef045b56e083. Let me know if there is anymore information I can provide.

[tgxworld (Guo Xiang Tan)]

More results ran on my local machine

bm_vm3.rb Benchmarks

Ruby 2.1.5

raw data:

[["vm3_gc",
  [[1.781873639,
    1.783857101,
    1.785210547,
    1.765383432,
    1.782443273,
    1.772300559,
    1.781810876,
    1.775731151,
    1.790814346,
    1.779261756]]]]

Elapsed time: 17.801257535 (sec)
-----------------------------------------------------------
benchmark results:
minimum results in each 10 measurements.
Execution time (sec)
name	ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-linux]
vm3_gc	1.765

Ruby 2.2

raw data:

[["vm3_gc",
  [[2.3463893930002087,
    2.3218893540001773,
    2.3346126609999374,
    2.325292480999906,
    2.3357411790002516,
    2.331829299000219,
    2.3262738720000016,
    2.3313931529996808,
    2.3262657880000006,
    2.3227735149998807]]]]

Elapsed time: 23.304931506 (sec)
-----------------------------------------------------------
benchmark results:
minimum results in each 10 measurements.
Execution time (sec)
name	ruby 2.2.0p6 (2015-01-03 revision 49125) [x86_64-linux]
vm3_gc	2.322

USE_RGENGC = 0

raw data:

[["vm3_gc",
  [[1.5703227599997263,
    1.5682877579997694,
    1.6116582240001662,
    1.5651109710001947,
    1.552847889000077,
    1.550723786999697,
    1.5628306730000077,
    1.5581518529997993,
    1.561870511000052,
    1.5770128940002905]]]]

Elapsed time: 15.682895972 (sec)
-----------------------------------------------------------
benchmark results:
minimum results in each 10 measurements.
Execution time (sec)
name	ruby 2.2.0p6 (2015-01-03 revision 49125) [x86_64-linux]
vm3_gc	1.551

USE_RINCGC = 0

raw data:

[["vm3_gc",
  [[2.095197224000003,
    2.0840697899998304,
    2.1194490730003963,
    2.091287412999918,
    2.0882632130001184,
    2.0964824409998073,
    2.08875445700005,
    2.0652376550001463,
    2.072298475000025,
    2.108764761999737]]]]

Elapsed time: 20.911727736 (sec)
-----------------------------------------------------------
benchmark results:
minimum results in each 10 measurements.
Execution time (sec)
name	ruby 2.2.0p6 (2015-01-03 revision 49125) [x86_64-linux]
vm3_gc	2.065

[ko1 (Koichi Sasada)]

• Status changed from Open to Feedback

Sorry for late response.

I try this on my environment, but not so big difference.
Please reopen if you find it is still slow.

[jeremyevans0 (Jeremy Evans)]

• Status changed from Feedback to Closed