upstream/mercurial-mirror Files · tests/test-committer.t

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.

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        $ unset HGUSER

        $ EMAIL="My Name <myname@example.com>"

        $ export EMAIL

        $ hg init test

        $ cd test

        $ touch asdf

        $ hg add asdf

        $ hg commit -m commit-1

        $ hg tip

        changeset:   0:53f268a58230

        tag:         tip

        user:        My Name <myname@example.com>

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     commit-1

        $ unset EMAIL

        $ echo 1234 > asdf

        $ hg commit -u "foo@bar.com" -m commit-1

        $ hg tip

        changeset:   1:3871b2a9e9bf

        tag:         tip

        user:        foo@bar.com

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     commit-1

        $ echo "[ui]" >> .hg/hgrc

        $ echo "username = foobar <foo@bar.com>" >> .hg/hgrc

        $ echo 12 > asdf

        $ hg commit -m commit-1

        $ hg tip

        changeset:   2:8eeac6695c1c

        tag:         tip

        user:        foobar <foo@bar.com>

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     commit-1

        $ echo 1 > asdf

        $ hg commit -u "foo@bar.com" -m commit-1

        $ hg tip

        changeset:   3:957606a725e4

        tag:         tip

        user:        foo@bar.com

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     commit-1

        $ echo 123 > asdf

        $ echo "[ui]" > .hg/hgrc

        $ echo "username = " >> .hg/hgrc

        $ hg commit -m commit-1

        abort: no username supplied

        (use 'hg config --edit' to set your username)

        [255]

      # test alternate config var

        $ echo 1234 > asdf

        $ echo "[ui]" > .hg/hgrc

        $ echo "user = Foo Bar II <foo2@bar.com>" >> .hg/hgrc

        $ hg commit -m commit-1

        $ hg tip

        changeset:   4:6f24bfb4c617

        tag:         tip

        user:        Foo Bar II <foo2@bar.com>

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     commit-1

      # test prompt username

        $ cat > .hg/hgrc <<EOF

        > [ui]

        > askusername = True

        > EOF

        $ echo 12345 > asdf

        $ hg commit --config ui.interactive=False -m ask

        enter a commit username: 

        no username found, using '[^']*' instead (re)

        $ hg rollback -q

        $ hg commit --config ui.interactive=True -m ask <<EOF

        > Asked User <ask@example.com>

        > EOF

        enter a commit username: Asked User <ask@example.com>

        $ hg tip

        changeset:   5:84c91d963b70

        tag:         tip

        user:        Asked User <ask@example.com>

        date:        Thu Jan 01 00:00:00 1970 +0000

        summary:     ask

      # test no .hg/hgrc (uses generated non-interactive username)

        $ echo space > asdf

        $ rm .hg/hgrc

        $ hg commit -m commit-1 2>&1

        no username found, using '[^']*' instead (re)

        $ echo space2 > asdf

        $ hg commit -u ' ' -m commit-1

        transaction abort!

        rollback completed

        abort: empty username!

        [255]

      # don't add tests here, previous test is unstable

        $ cd ..

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				$ unset HGUSER
				$ EMAIL="My Name <myname@example.com>"
				$ export EMAIL

				$ hg init test
				$ cd test
				$ touch asdf
				$ hg add asdf
				$ hg commit -m commit-1
				$ hg tip
				changeset: 0:53f268a58230
				tag: tip
				user: My Name <myname@example.com>
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: commit-1


				$ unset EMAIL
				$ echo 1234 > asdf
				$ hg commit -u "foo@bar.com" -m commit-1
				$ hg tip
				changeset: 1:3871b2a9e9bf
				tag: tip
				user: foo@bar.com
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: commit-1

				$ echo "[ui]" >> .hg/hgrc
				$ echo "username = foobar <foo@bar.com>" >> .hg/hgrc
				$ echo 12 > asdf
				$ hg commit -m commit-1
				$ hg tip
				changeset: 2:8eeac6695c1c
				tag: tip
				user: foobar <foo@bar.com>
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: commit-1

				$ echo 1 > asdf
				$ hg commit -u "foo@bar.com" -m commit-1
				$ hg tip
				changeset: 3:957606a725e4
				tag: tip
				user: foo@bar.com
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: commit-1

				$ echo 123 > asdf
				$ echo "[ui]" > .hg/hgrc
				$ echo "username = " >> .hg/hgrc
				$ hg commit -m commit-1
				abort: no username supplied
				(use 'hg config --edit' to set your username)
				[255]

				# test alternate config var

				$ echo 1234 > asdf
				$ echo "[ui]" > .hg/hgrc
				$ echo "user = Foo Bar II <foo2@bar.com>" >> .hg/hgrc
				$ hg commit -m commit-1
				$ hg tip
				changeset: 4:6f24bfb4c617
				tag: tip
				user: Foo Bar II <foo2@bar.com>
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: commit-1

				# test prompt username

				$ cat > .hg/hgrc <<EOF
				> [ui]
				> askusername = True
				> EOF

				$ echo 12345 > asdf
				$ hg commit --config ui.interactive=False -m ask
				enter a commit username:
				no username found, using '[^']*' instead (re)
				$ hg rollback -q

				$ hg commit --config ui.interactive=True -m ask <<EOF
				> Asked User <ask@example.com>
				> EOF
				enter a commit username: Asked User <ask@example.com>
				$ hg tip
				changeset: 5:84c91d963b70
				tag: tip
				user: Asked User <ask@example.com>
				date: Thu Jan 01 00:00:00 1970 +0000
				summary: ask


				# test no .hg/hgrc (uses generated non-interactive username)

				$ echo space > asdf
				$ rm .hg/hgrc
				$ hg commit -m commit-1 2>&1
				no username found, using '[^']*' instead (re)

				$ echo space2 > asdf
				$ hg commit -u ' ' -m commit-1
				transaction abort!
				rollback completed
				abort: empty username!
				[255]

				# don't add tests here, previous test is unstable

				$ cd ..