##// END OF EJS Templates
upstream » mercurial-mirror
RSS

Clone from https://www.mercurial-scm.org/repo/hg-all

perf: add command for measuring revlog chunk operations...
perf: add command for measuring revlog chunk operations Upcoming commits will teach revlogs to leverage the new compression engine API so that new compression formats can more easily be leveraged in revlogs. We want to be sure this refactoring doesn't regress performance. So this commit introduces "perfrevchunks" to explicitly test performance of reading, decompressing, and recompressing revlog chunks. Here is output when run on the mozilla-unified repo: $ hg perfrevlogchunks -c ! read ! wall 0.346603 comb 0.350000 user 0.340000 sys 0.010000 (best of 28) ! read w/ reused fd ! wall 0.337707 comb 0.340000 user 0.320000 sys 0.020000 (best of 30) ! read batch ! wall 0.013206 comb 0.020000 user 0.000000 sys 0.020000 (best of 221) ! read batch w/ reused fd ! wall 0.013259 comb 0.030000 user 0.010000 sys 0.020000 (best of 222) ! chunk ! wall 1.909939 comb 1.910000 user 1.900000 sys 0.010000 (best of 6) ! chunk batch ! wall 1.750677 comb 1.760000 user 1.740000 sys 0.020000 (best of 6) ! compress ! wall 5.668004 comb 5.670000 user 5.670000 sys 0.000000 (best of 3) $ hg perfrevlogchunks -m ! read ! wall 0.365834 comb 0.370000 user 0.350000 sys 0.020000 (best of 26) ! read w/ reused fd ! wall 0.350160 comb 0.350000 user 0.320000 sys 0.030000 (best of 28) ! read batch ! wall 0.024777 comb 0.020000 user 0.000000 sys 0.020000 (best of 119) ! read batch w/ reused fd ! wall 0.024895 comb 0.030000 user 0.000000 sys 0.030000 (best of 118) ! chunk ! wall 2.514061 comb 2.520000 user 2.480000 sys 0.040000 (best of 4) ! chunk batch ! wall 2.380788 comb 2.380000 user 2.360000 sys 0.020000 (best of 5) ! compress ! wall 9.815297 comb 9.820000 user 9.820000 sys 0.000000 (best of 3) We already see some interesting data, such as how much slower non-batched chunk reading is and that zlib compression appears to be >2x slower than decompression. I didn't have the data when I wrote this commit message, but I ran this on Mozilla's NFS-based Mercurial server and the time for reading with a reused file descriptor was faster. So I think it is worth testing both with and without file descriptor reuse so we can make informed decisions about recycling file descriptors.
Patrick Mezard - - Load All Authors

File last commit:

r11196:573bef78 merge default
r30451:94ca0e13 default
Show More
branches.svndump
416 lines | 5.6 KiB | text/plain | TextLexer
/ tests / svn / branches.svndump
History | Annotation | Raw |Copy content |Copy permalink
SVN-fs-dump-format-version: 2
UUID: 644ede6c-2b81-4367-9dc8-d786514f2cde
Revision-number: 0
Prop-content-length: 56
Content-length: 56
K 8
svn:date
V 27
2010-05-19T20:16:07.429098Z
PROPS-END
Revision-number: 1
Prop-content-length: 112
Content-length: 112
K 7
svn:log
V 10
init projA
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:07.461283Z
PROPS-END
Node-path: branches
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10
PROPS-END
Node-path: trunk
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10
PROPS-END
Revision-number: 2
Prop-content-length: 106
Content-length: 106
K 7
svn:log
V 5
hello
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:08.121436Z
PROPS-END
Node-path: branches/notinbranch
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 2
Text-content-md5: e29311f6f1bf1af907f9ef9f44b8328b
Text-content-sha1: e983f374794de9c64e3d1c1de1d490c0756eeeff
Content-length: 12
PROPS-END
d
Node-path: trunk/a
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 2
Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3
Text-content-sha1: 3f786850e387550fdab836ed7e6dc881de23001b
Content-length: 12
PROPS-END
a
Node-path: trunk/b
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 2
Text-content-md5: 3b5d5c3712955042212316173ccf37be
Text-content-sha1: 89e6c98d92887913cadf06b2adb97f26cde4849b
Content-length: 12
PROPS-END
b
Node-path: trunk/c
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 2
Text-content-md5: 2cd6ee2c70b0bde53fbe6cac3c8b8bb1
Text-content-sha1: 2b66fd261ee5c6cfc8de7fa466bab600bcfe4f69
Content-length: 12
PROPS-END
c
Node-path: trunk/dir
Node-kind: dir
Node-action: add
Prop-content-length: 10
Content-length: 10
PROPS-END
Node-path: trunk/dir/e
Node-kind: file
Node-action: add
Prop-content-length: 10
Text-content-length: 2
Text-content-md5: 9ffbf43126e33be52cd2bf7e01d627f9
Text-content-sha1: 094e3afb2fe8dfe82f63731cdcd3b999f4856cff
Content-length: 12
PROPS-END
e
Revision-number: 3
Prop-content-length: 132
Content-length: 132
K 7
svn:log
V 30
branch trunk, remove c and dir
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:11.113124Z
PROPS-END
Node-path: branches/old
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 2
Node-copyfrom-path: trunk
Node-path: branches/old/dir
Node-action: delete
Node-path: branches/old/c
Node-action: delete
Revision-number: 4
Prop-content-length: 109
Content-length: 109
K 7
svn:log
V 8
change a
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:13.060877Z
PROPS-END
Node-path: trunk/a
Node-kind: file
Node-action: change
Text-content-length: 4
Text-content-md5: 0d227f1abf8c2932d342e9b99cc957eb
Text-content-sha1: d7c8127a20a396cff08af086a1c695b0636f0c29
Content-length: 4
a
a
Revision-number: 5
Prop-content-length: 109
Content-length: 109
K 7
svn:log
V 8
change b
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:14.066212Z
PROPS-END
Node-path: branches/old/b
Node-kind: file
Node-action: change
Text-content-length: 4
Text-content-md5: 06ac26ed8b614fc0b141e4542aa067c2
Text-content-sha1: f6980469e74f7125178e88ec571e06fe6ce86e95
Content-length: 4
b
b
Revision-number: 6
Prop-content-length: 119
Content-length: 119
K 7
svn:log
V 17
move and update c
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:16.069449Z
PROPS-END
Node-path: branches/old/c
Node-kind: file
Node-action: add
Node-copyfrom-rev: 3
Node-copyfrom-path: trunk/b
Text-copy-source-md5: 3b5d5c3712955042212316173ccf37be
Text-copy-source-sha1: 89e6c98d92887913cadf06b2adb97f26cde4849b
Text-content-length: 4
Text-content-md5: 33cb6785d50937d8d307ebb66d6259a7
Text-content-sha1: 7a6478264aa11a0f4befef356c03e83f2b1f6eba
Content-length: 4
b
c
Node-path: trunk/b
Node-action: delete
Revision-number: 7
Prop-content-length: 116
Content-length: 116
K 7
svn:log
V 14
change b again
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:17.070868Z
PROPS-END
Node-path: branches/old/b
Node-kind: file
Node-action: change
Text-content-length: 6
Text-content-md5: cdcfb41554e2d092c13f5e6839e63577
Text-content-sha1: 17ac58cabedebea235d1b5605531d5b1559797e9
Content-length: 6
b
b
b
Revision-number: 8
Prop-content-length: 114
Content-length: 114
K 7
svn:log
V 12
move to old2
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:20.063098Z
PROPS-END
Node-path: branches/old2
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 7
Node-copyfrom-path: branches/old
Node-path: branches/old
Node-action: delete
Revision-number: 9
Prop-content-length: 118
Content-length: 118
K 7
svn:log
V 16
move back to old
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:22.062931Z
PROPS-END
Node-path: branches/old
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 8
Node-copyfrom-path: branches/old2
Node-path: branches/old2
Node-action: delete
Revision-number: 10
Prop-content-length: 118
Content-length: 118
K 7
svn:log
V 16
last change to a
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:23.075562Z
PROPS-END
Node-path: trunk/a
Node-kind: file
Node-action: change
Text-content-length: 2
Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3
Text-content-sha1: 3f786850e387550fdab836ed7e6dc881de23001b
Content-length: 2
a
Revision-number: 11
Prop-content-length: 126
Content-length: 126
K 7
svn:log
V 24
branch trunk@1 into old3
K 10
svn:author
V 7
pmezard
K 8
svn:date
V 27
2010-05-19T20:16:25.107655Z
PROPS-END
Node-path: branches/old3
Node-kind: dir
Node-action: add
Node-copyfrom-rev: 1
Node-copyfrom-path: trunk