Improvements in listsort.txt and a comment in sortperf.py.
Automerge-Triggered-By: @csabella
(cherry picked from commit 24e5ad4689)
Co-authored-by: Stefan Pochmann <stefan.pochmann@gmail.com>
* Replace "time.clock on windows, or time.time" with time.perf_counter()
* profile module: only use time.process_time() instead of trying different
functions providing the process time
* timeit module: use time.perf_counter() by default, time.time() and
time.clock() can still be used using --time and --clock options
* pybench program: use time.perf_counter() by default, add support for
the new time.process_time() and time.perf_counter() functions, but stay
backward compatible. Use also time.get_clock_info() to display information
of the timer.
svn+ssh://pythondev@svn.python.org/python/branches/p3yk
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r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines
Use the new print syntax, at least.
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r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line
remove old cruftiness
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r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line
make this work with the new Python
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r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line
Get asdl code gen working with Python 2.3. Should continue to work with 3.0
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r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line
Verify checkins to p3yk (sic) branch go to 3000 list.
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r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line
Fix this test so it runs again by importing warnings_test properly.
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r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines
So long xrange. range() now supports values that are outside
-sys.maxint to sys.maxint. floats raise a TypeError.
This has been sitting for a long time. It probably has some problems and
needs cleanup. Objects/rangeobject.c now uses 4-space indents since
it is almost completely new.
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r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines
Fix two tests that were previously depending on significant spaces
at the end of a line (and before that on Python 2.x print behavior
that has no exact equivalent in 3.0).
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There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.
(Oh, and I don't know if the compiler package works.)
at random, and replaces the elements at those positions with new random
values. I was pleasantly surprised by how fast this goes! It's hard to
conceive of an algorithm that could special-case for this effectively.
Plus it's exactly what happens if a burst of gamma rays corrupts your
sorted database on disk <wink>.
i 2**i *sort ... %sort
15 32768 0.18 ... 0.03
16 65536 0.24 ... 0.04
17 131072 0.53 ... 0.08
18 262144 1.17 ... 0.16
19 524288 2.56 ... 0.35
20 1048576 5.54 ... 0.77
array. Our samplesort special-cases the snot out of this, running about
12x faster than *sort. The experimental mergesort runs it about 8x
faster than *sort without special-casing, but should really do better
than that (when merging runs of different lengths, right now it only
does something clever about finding where the second run begins in
the first and where the first run ends in the second, and that's more
of a temp-memory optimization).
the default range to end at 2**20 (machines are much faster now).
Fixed what was quite a arguably a bug, explaining an old mystery: the
"!sort" case here contructs what *was* a quadratic-time disaster for
the old quicksort implementation. But under the current samplesort, it
always ran much faster than *sort (the random case). This never made
sense. Turns out it was because !sort was sorting an integer array,
while all the other cases sort floats; and comparing ints goes much
quicker than comparing floats in Python. After changing !sort to chew
on floats instead, it's now slower than the random sort case, which
makes more sense (but is just a few percent slower; samplesort is
massively less sensitive to "bad patterns" than quicksort).
Miss Islington (bot)
R David Murray
Andrew Svetlov
Victor Stinner
Georg Brandl
Guido van Rossum
Tim Peters
Andrew M. Kuchling
Eric S. Raymond