rust-cpython: using rustext.dagop.headrevs in revlog

Authored by gracinet.

Description

rust-cpython: using rustext.dagop.headrevs in revlog

As with the previous oxidation series, revlog plays the role
of the factory, either using its parents function, or passing the
index.

We include below results of revsetbenchmarks.py taken on the
PyPy repository on those of contrib/all-revsets.tx that involve
heads().

In most of the cases, this seems to be either neutral or an improvement.
In the cases where it's actually a bit slower, we suspect that differences
in heads() performance is actually burried in variance on the incoming
revset (probably several orders of magnitude slower).

The precheck for filtered revisions of parent changeset has a significative
performance benefit, too.

Result by revset

Revision:
0) 0c7b353ce100; rust-cpython: binding for headrevs()

  1. Parent of this changeset; changelog: prefilter in headrevs()
  2. This changeset

revset #0: heads(commonancestors(last(head(), 2)))

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 0.001379 0.001361 0.001381 0.001410 0.001393 0.001372 0.001414 0.001387 0.001411 0.001429 0.001415

  1. 0.001351 0.001373 0.001383 0.001392 0.001401 0.001385 0.001405 0.001406 0.001385 0.001424 0.001399
  2. 0.001365 0.001362 0.001375 0.001393 0.001370 0.001365 0.001413 0.001386 0.001377 0.001415 0.001411

revset #1: heads(commonancestors(head()))

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 0.047578 0.048578 0.047764 0.048065 0.047289 0.047305 0.047729 0.047370 0.047611 0.048005 0.047755

  1. 0.048072 0.047471 0.048351 0.048193 0.048380 0.047968 0.047683 0.047355 0.048587 0.047044 0.048299
  2. 0.047124 0.046699 0.046896 0.047250 0.046920 0.047379 0.046855 0.047753 0.047289 0.047219 0.046991

revset #2: heads(all())

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 0.037654 0.037814 0.037149 0.037457 0.037609 0.037053 0.036825 0.037054 0.037739 0.036816 0.037604

  1. 0.021845 58% 0.022172 58% 0.022148 59% 0.022059 58% 0.022261 59% 0.022246 60% 0.021691 58% 0.021967 59% 0.022156 58% 0.021820 59% 0.023141 61%
  2. 0.014459 66% 0.014470 65% 0.014420 65% 0.014413 65% 0.014421 64% 0.014492 65% 0.014512 66% 0.014579 66% 0.014500 65% 0.014501 66% 0.014537 62%

revset #3: heads(-10000:-1)

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 0.003696 0.003681 0.003719 0.003746 0.003725 0.003750 0.003692 0.003747 0.003712 0.003754 0.003763

  1. 0.002131 57% 0.002142 58% 0.002147 57% 0.002203 58% 0.002143 57% 0.002208 58% 0.002158 58% 0.002182 58% 0.002169 58% 0.002209 58% 0.002201 58%
  2. 0.001490 69% 0.001524 71% 0.001515 70% 0.001528 69% 0.001531 71% 0.001520 68% 0.001549 71% 0.001542 70% 0.001560 71% 0.001559 70% 0.001544 70%

revset #4: (-5000:-1000) and heads(-10000:-1)

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 0.003832 0.003816 0.003747 0.003814 0.003749 0.003894 0.003784 0.003796 0.003915 0.003829 0.003795

  1. 0.002282 59% 0.002208 57% 0.002220 59% 0.002240 58% 0.002210 58% 0.002276 58% 0.002250 59% 0.002250 59% 0.002311 59% 0.002230 58% 0.002241 59%
  2. 0.001658 72% 0.001662 75% 0.001568 70% 0.001599 71% 0.001588 71% 0.001696 74% 0.001615 71% 0.001593 70% 0.001710 73% 0.001622 72% 0.001616 72%

revset #5: heads(matching(tip, "author"))

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 7.826449 7.563260 7.581034 7.688493 7.634001 7.777860 7.768228 8.026097 7.767422 7.565254 7.938643

  1. 7.750766 7.562555 7.660426 7.574089 7.492220 7.438582 7.562015 7.530635 93% 7.636343 7.636712 7.645113
  2. 7.617941 7.519601 7.584922 7.507653 7.547440 7.524436 7.575291 7.883991 7.792142 7.709622 7.868595

revset #6: heads(matching(tip, "author")) and -10000:-1

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 7.744489 7.728684 7.734065 7.928513 7.875949 7.883727 7.815492 7.791335 7.784793 7.761218 7.815731

  1. 7.808956 7.480446 7.618759 7.920270 7.676343 7.803613 7.770210 7.713100 7.584420 7.767335 7.825140
  2. 7.519987 7.938748 106% 7.805328 7.694162 7.750129 7.714229 7.603825 7.580734 7.555291 7.524207 7.504580

revset #7: (-10000:-1) and heads(matching(tip, "author"))

plain         min           max           first         last          reverse       rev..rst      rev..ast      sort          sor..rst      sor..ast

0) 7.909321 7.694357 7.666021 7.538686 7.771821 7.876217 7.852103 7.812727 7.545919 7.788860 7.764585

  1. 7.749232 7.683715 7.968393 7.895257 7.764160 8.314884 105% 7.921697 7.882613 7.867209 7.684707 7.544501
  2. 7.824903 7.784605 7.727846 7.566613 7.581994 7.539205 90% 7.555316 7.535572 7.581786 7.901795 7.662832

Details

Committed
gracinetJan 16 2019, 10:19 AM
Parents
rHG6843379bf99e: changelog: prefilter in headrevs()
Branches
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Tags
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