Mercurial > hg
view tests/test-minirst.py.out @ 42044:bb271ec2fbfb
compression: introduce a `storage.revlog.zstd.level` configuration
This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.
The option name for the compression level is more straight forward to pick, so
this changesets comes first. Having a dedicated option for each compression
engine is useful because they don't support the same range of values.
I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.
Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.
The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.
Comparison summary
==================
We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time
Read performance:
-----------------
| zlib | zstd | cmp | f2s
mercurial | 0.170159 - 0.189219 | 0.144127 - 0.149624 | 80% | 88%
pypy | 2.679217 - 2.768691 | 1.532317 - 1.705044 | 60% | 63%
netbeans | 122.477027 - 141.620281 | 72.996346 - 89.731560 | 58% | 73%
mozilla | 147.867662 - 170.572118 | 91.700995 - 105.853099 | 56% | 71%
Write performance:
------------------
| zlib | zstd | cmp | f2s
mercurial | 53.250304 - 56.2936129 | 40.877025 - 45.677286 | 75% | 86%
pypy | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%
Raw data
--------
repo alg lvl .hg/store size 00manifest.d read write
mercurial zlib 1 49,402,813 5,963,475 0.170159 53.250304
mercurial zlib 6 47,197,397 5,875,730 0.182820 56.264320
mercurial zlib 9 47,121,596 5,849,781 0.189219 56.293612
mercurial zstd 1 49,737,084 5,966,355 0.144127 40.877025
mercurial zstd 3 48,961,867 5,895,208 0.146376 42.268142
mercurial zstd 5 48,200,592 5,938,676 0.149624 43.162875
mercurial zstd 10 47,833,520 5,913,353 0.145185 44.012489
mercurial zstd 15 47,314,604 5,728,679 0.147686 45.677286
mercurial zstd 20 47,330,502 5,830,539 0.145789 45.025407
mercurial zstd 22 47,330,076 5,830,539 0.143996 44.690460
pypy zlib 1 370,830,572 28,462,425 2.679217 460.721984
pypy zlib 6 340,112,317 27,648,747 2.768691 467.537158
pypy zlib 9 338,360,736 27,639,003 2.763495 476.589918
pypy zstd 1 362,377,479 27,916,214 1.532317 270.545409
pypy zstd 3 354,137,693 27,905,988 1.686718 294.951509
pypy zstd 5 342,640,043 27,655,774 1.705044 301.002219
pypy zstd 10 334,224,327 27,164,493 1.567287 285.186239
pypy zstd 15 329,000,363 26,645,965 1.637729 299.561332
pypy zstd 20 324,534,039 26,199,547 1.526813 302.149827
pypy zstd 22 324,530,595 26,198,932 1.525718 307.821218
netbeans zlib 1 1,281,847,810 165,495,457 122.477027 520.560316
netbeans zlib 6 1,205,284,353 159,161,207 139.876147 715.930400
netbeans zlib 9 1,197,135,671 155,034,586 141.620281 678.297064
netbeans zstd 1 1,259,581,737 160,840,613 72.996346 370.356311
netbeans zstd 3 1,232,978,122 157,691,551 81.622317 396.733087
netbeans zstd 5 1,208,034,075 160,246,880 83.080549 364.342626
netbeans zstd 10 1,188,624,176 156,083,417 79.323935 403.594602
netbeans zstd 15 1,176,973,589 153,859,477 89.731560 428.329652
netbeans zstd 20 1,162,958,258 151,147,535 82.842667 392.335349
netbeans zstd 22 1,162,707,029 151,150,220 82.565695 402.840655
mozilla zlib 1 2,775,497,186 298,527,987 147.867662 751.263721
mozilla zlib 6 2,596,856,420 286,597,671 170.572118 987.056093
mozilla zlib 9 2,587,542,494 287,018,264 163.622338 739.803002
mozilla zstd 1 2,723,159,348 286,617,532 91.700995 570.042751
mozilla zstd 3 2,665,055,001 286,152,013 95.240155 561.412805
mozilla zstd 5 2,607,819,817 288,060,030 101.978048 505.152906
mozilla zstd 10 2,558,761,085 283,967,648 104.113481 497.771202
mozilla zstd 15 2,526,216,060 275,581,300 105.853099 591.930683
mozilla zstd 20 2,485,114,806 266,478,859 95.268795 576.515389
mozilla zstd 22 2,484,869,080 266,456,505 94.429282 572.785537
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 27 Mar 2019 18:35:59 +0100 |
parents | 6582b3716ae0 |
children | aaff3bc75306 |
line wrap: on
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== paragraphs == 60 column format: ---------------------------------------------------------------------- This is some text in the first paragraph. A small indented paragraph. It is followed by some lines containing random whitespace. The third and final paragraph. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- This is some text in the first paragraph. A small indented paragraph. It is followed by some lines containing random whitespace. The third and final paragraph. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> This is some text in the first paragraph. </p> <p> A small indented paragraph. It is followed by some lines containing random whitespace. </p> <p> The third and final paragraph. </p> ---------------------------------------------------------------------- == definitions == 60 column format: ---------------------------------------------------------------------- A Term Definition. The indented lines make up the definition. Another Term Another definition. The final line in the definition determines the indentation, so this will be indented with four spaces. A Nested/Indented Term Definition. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- A Term Definition. The indented lines make up the definition. Another Term Another definition. The final line in the definition determines the indentation, so this will be indented with four spaces. A Nested/Indented Term Definition. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <dl> <dt>A Term <dd>Definition. The indented lines make up the definition. <dt>Another Term <dd>Another definition. The final line in the definition determines the indentation, so this will be indented with four spaces. <dt>A Nested/Indented Term <dd>Definition. </dl> ---------------------------------------------------------------------- == literals == 60 column format: ---------------------------------------------------------------------- The fully minimized form is the most convenient form: Hello literal world In the partially minimized form a paragraph simply ends with space-double-colon. //////////////////////////////////////// long un-wrapped line in a literal block \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ This literal block is started with '::', the so-called expanded form. The paragraph with '::' disappears in the final output. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- The fully minimized form is the most convenient form: Hello literal world In the partially minimized form a paragraph simply ends with space-double-colon. //////////////////////////////////////// long un-wrapped line in a literal block \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ This literal block is started with '::', the so-called expanded form. The paragraph with '::' disappears in the final output. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> The fully minimized form is the most convenient form: </p> <pre> Hello literal world </pre> <p> In the partially minimized form a paragraph simply ends with space-double-colon. </p> <pre> //////////////////////////////////////// long un-wrapped line in a literal block \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ </pre> <pre> This literal block is started with '::', the so-called expanded form. The paragraph with '::' disappears in the final output. </pre> ---------------------------------------------------------------------- == lists == 60 column format: ---------------------------------------------------------------------- - This is the first list item. Second paragraph in the first list item. - List items need not be separated by a blank line. - And will be rendered without one in any case. We can have indented lists: - This is an indented list item - Another indented list item: - A literal block in the middle of an indented list. (The above is not a list item since we are in the literal block.) Literal block with no indentation (apart from the two spaces added to all literal blocks). 1. This is an enumerated list (first item). 2. Continuing with the second item. (1) foo (2) bar 1) Another 2) List Line blocks are also a form of list: This is the first line. The line continues here. This is the second line. Bullet lists are also detected: * This is the first bullet * This is the second bullet It has 2 lines * This is the third bullet ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- - This is the first list item. Second paragraph in the first list item. - List items need not be separated by a blank line. - And will be rendered without one in any case. We can have indented lists: - This is an indented list item - Another indented list item: - A literal block in the middle of an indented list. (The above is not a list item since we are in the literal block.) Literal block with no indentation (apart from the two spaces added to all literal blocks). 1. This is an enumerated list (first item). 2. Continuing with the second item. (1) foo (2) bar 1) Another 2) List Line blocks are also a form of list: This is the first line. The line continues here. This is the second line. Bullet lists are also detected: * This is the first bullet * This is the second bullet It has 2 lines * This is the third bullet ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <ul> <li> This is the first list item. <p> Second paragraph in the first list item. </p> <li> List items need not be separated by a blank line. <li> And will be rendered without one in any case. </ul> <p> We can have indented lists: </p> <ul> <li> This is an indented list item <li> Another indented list item: <pre> - A literal block in the middle of an indented list. </pre> <pre> (The above is not a list item since we are in the literal block.) </pre> </ul> <pre> Literal block with no indentation (apart from the two spaces added to all literal blocks). </pre> <ol> <li> This is an enumerated list (first item). <li> Continuing with the second item. <li> foo <li> bar <li> Another <li> List </ol> <p> Line blocks are also a form of list: </p> <ol> <li> This is the first line. The line continues here. <li> This is the second line. </ol> <p> Bullet lists are also detected: </p> <ul> <li> This is the first bullet <li> This is the second bullet It has 2 lines <li> This is the third bullet </ul> ---------------------------------------------------------------------- == options == 60 column format: ---------------------------------------------------------------------- There is support for simple option lists, but only with long options: -X --exclude filter an option with a short and long option with an argument -I --include an option with both a short option and a long option --all Output all. --both Output both (this description is quite long). --long Output all day long. --par This option has two paragraphs in its description. This is the first. This is the second. Blank lines may be omitted between options (as above) or left in (as here). The next paragraph looks like an option list, but lacks the two-space marker after the option. It is treated as a normal paragraph: --foo bar baz ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- There is support for simple option lists, but only with long options: -X --exclude filter an option with a short and long option with an argumen t -I --include an option with both a short option and a long option --all Output all. --both Output both (this d escript ion is quite long). --long Output all day long. --par This option has two paragra phs in its des criptio n. This is the first. This is the second. Blank lines may be omitted between options (as above) or left in (as here). The next paragraph looks like an option list, but lacks the two-space marker after the option. It is treated as a normal paragraph: --foo bar baz ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> There is support for simple option lists, but only with long options: </p> <dl> <dt>-X --exclude filter <dd>an option with a short and long option with an argument <dt>-I --include <dd>an option with both a short option and a long option <dt> --all <dd>Output all. <dt> --both <dd>Output both (this description is quite long). <dt> --long <dd>Output all day long. <dt> --par <dd>This option has two paragraphs in its description. This is the first. <p> This is the second. Blank lines may be omitted between options (as above) or left in (as here). </p> </dl> <p> The next paragraph looks like an option list, but lacks the two-space marker after the option. It is treated as a normal paragraph: </p> <p> --foo bar baz </p> ---------------------------------------------------------------------- == fields == 60 column format: ---------------------------------------------------------------------- a First item. ab Second item. Indentation and wrapping is handled automatically. Next list: small The larger key below triggers full indentation here. much too large This key is big enough to get its own line. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- a First item. ab Second item. Indentation and wrapping is handled automatically. Next list: small The larger key below triggers full indentation here. much too large This key is big enough to get its own line. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <dl> <dt>a <dd>First item. <dt>ab <dd>Second item. Indentation and wrapping is handled automatically. </dl> <p> Next list: </p> <dl> <dt>small <dd>The larger key below triggers full indentation here. <dt>much too large <dd>This key is big enough to get its own line. </dl> ---------------------------------------------------------------------- == containers (normal) == 60 column format: ---------------------------------------------------------------------- Normal output. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Normal output. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Normal output. </p> ---------------------------------------------------------------------- == containers (verbose) == 60 column format: ---------------------------------------------------------------------- Normal output. Verbose output. ---------------------------------------------------------------------- ['debug', 'debug'] ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Normal output. Verbose output. ---------------------------------------------------------------------- ['debug', 'debug'] ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Normal output. </p> <p> Verbose output. </p> ---------------------------------------------------------------------- ['debug', 'debug'] ---------------------------------------------------------------------- == containers (debug) == 60 column format: ---------------------------------------------------------------------- Normal output. Initial debug output. ---------------------------------------------------------------------- ['verbose'] ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Normal output. Initial debug output. ---------------------------------------------------------------------- ['verbose'] ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Normal output. </p> <p> Initial debug output. </p> ---------------------------------------------------------------------- ['verbose'] ---------------------------------------------------------------------- == containers (verbose debug) == 60 column format: ---------------------------------------------------------------------- Normal output. Initial debug output. Verbose output. Debug output. ---------------------------------------------------------------------- [] ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Normal output. Initial debug output. Verbose output. Debug output. ---------------------------------------------------------------------- [] ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Normal output. </p> <p> Initial debug output. </p> <p> Verbose output. </p> <p> Debug output. </p> ---------------------------------------------------------------------- [] ---------------------------------------------------------------------- == roles == 60 column format: ---------------------------------------------------------------------- Please see 'hg add'. ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Please see 'hg add'. ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Please see 'hg add'. </p> ---------------------------------------------------------------------- == sections == 60 column format: ---------------------------------------------------------------------- Title ===== Section ------- Subsection '''''''''' Markup: "foo" and 'hg help' --------------------------- ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Title ===== Section ------- Subsection '''''''''' Markup: "foo" and 'hg help' --------------------------- ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <h1>Title</h1> <h2>Section</h2> <h3>Subsection</h3> <h2>Markup: "foo" and 'hg help'</h2> ---------------------------------------------------------------------- == admonitions == 60 column format: ---------------------------------------------------------------------- Note: This is a note - Bullet 1 - Bullet 2 Warning! This is a warning Second input line of warning !Danger! This is danger ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Note: This is a note - Bullet 1 - Bullet 2 Warning! This is a warning Second input line of warning !Danger! This is danger ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> <b>Note:</b> </p> <p> This is a note </p> <ul> <li> Bullet 1 <li> Bullet 2 </ul> <p> <b>Warning!</b> This is a warning Second input line of warning </p> <p> <b>!Danger!</b> This is danger </p> ---------------------------------------------------------------------- == comments == 60 column format: ---------------------------------------------------------------------- Some text. Some indented text. Empty comment above ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- Some text. Some indented text. Empty comment above ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <p> Some text. </p> <p> Some indented text. </p> <p> Empty comment above </p> ---------------------------------------------------------------------- === === ======================================== a b c === === ======================================== 1 2 3 foo bar baz this list is very very very long man === === ======================================== == table == 60 column format: ---------------------------------------------------------------------- a b c ------------------------------------------------ 1 2 3 foo bar baz this list is very very very long man ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- a b c ------------------------------ 1 2 3 foo bar baz this list is very very very long man ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <table> <tr><td>a</td> <td>b</td> <td>c</td></tr> <tr><td>1</td> <td>2</td> <td>3</td></tr> <tr><td>foo</td> <td>bar</td> <td>baz this list is very very very long man</td></tr> </table> ---------------------------------------------------------------------- = ==== ====================================== s long line goes on here xy tried to fix here by indenting = ==== ====================================== == table+nl == 60 column format: ---------------------------------------------------------------------- s long line goes on here xy tried to fix here by indenting ---------------------------------------------------------------------- 30 column format: ---------------------------------------------------------------------- s long line goes on here xy tried to fix here by indenting ---------------------------------------------------------------------- html format: ---------------------------------------------------------------------- <table> <tr><td>s</td> <td>long</td> <td>line goes on here</td></tr> <tr><td></td> <td>xy</td> <td>tried to fix here by indenting</td></tr> </table> ----------------------------------------------------------------------