upstream/mercurial-mirror Files · tests/test-manifestv2.t

hgweb: profile HTTP requests...

hgweb: profile HTTP requests Currently, running `hg serve --profile` doesn't yield anything useful: when the process is terminated the profiling output displays results from the main thread, which typically spends most of its time in select.select(). Furthermore, it has no meaningful results from mercurial.* modules because the threads serving HTTP requests don't actually get profiled. This patch teaches the hgweb wsgi applications to profile individual requests. If profiling is enabled, the profiler kicks in after HTTP/WSGI environment processing but before Mercurial's main request processing. The profile results are printed to the configured profiling output. If running `hg serve` from a shell, they will be printed to stderr, just before the HTTP request line is logged. If profiling to a file, we only write a single profile to the file because the file is not opened in append mode. We could add support for appending to files in a future patch if someone wants it. Per request profiling doesn't work with the statprof profiler because internally that profiler collects samples from the thread that *initially* requested profiling be enabled. I have plans to address this by vendoring Facebook's customized statprof and then improving it.

Pierre-Yves David - - Load All Authors

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      Create repo with old manifest

        $ cat << EOF >> $HGRCPATH

        > [format]

        > usegeneraldelta=yes

        > EOF

        $ hg init existing

        $ cd existing

        $ echo footext > foo

        $ hg add foo

        $ hg commit -m initial

      We're using v1, so no manifestv2 entry is in requires yet.

        $ grep manifestv2 .hg/requires

        [1]

      Let's clone this with manifestv2 enabled to switch to the new format for

      future commits.

        $ cd ..

        $ hg clone --pull existing new --config experimental.manifestv2=1

        requesting all changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 1 changes to 1 files

        updating to branch default

        1 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cd new

      Check that entry was added to .hg/requires.

        $ grep manifestv2 .hg/requires

        manifestv2

      Make a new commit.

        $ echo newfootext > foo

        $ hg commit -m new

      Check that the manifest actually switched to v2.

        $ hg debugdata -m 0

        foo\x0021e958b1dca695a60ee2e9cf151753204ee0f9e9 (esc)

        $ hg debugdata -m 1

        \x00 (esc)

        \x00foo\x00 (esc)

        I\xab\x7f\xb8(\x83\xcas\x15\x9d\xc2\xd3\xd3:5\x08\xbad5_ (esc)

      Check that manifestv2 is used if the requirement is present, even if it's

      disabled in the config.

        $ echo newerfootext > foo

        $ hg --config experimental.manifestv2=False commit -m newer

        $ hg debugdata -m 2

        \x00 (esc)

        \x00foo\x00 (esc)

        \xa6\xb1\xfb\xef]\x91\xa1\x19`\xf3.#\x90S\xf8\x06 \xe2\x19\x00 (esc)

      Check that we can still read v1 manifests.

        $ hg files -r 0

        foo

        $ cd ..

      Check that entry is added to .hg/requires on repo creation

        $ hg --config experimental.manifestv2=True init repo

        $ cd repo

        $ grep manifestv2 .hg/requires

        manifestv2

      Set up simple repo

        $ echo a > file1

        $ echo b > file2

        $ echo c > file3

        $ hg ci -Aqm 'initial'

        $ echo d > file2

        $ hg ci -m 'modify file2'

      Check that 'hg verify', which uses manifest.readdelta(), works

        $ hg verify

        checking changesets

        checking manifests

        crosschecking files in changesets and manifests

        checking files

        3 files, 2 changesets, 4 total revisions

      Check that manifest revlog is smaller than for v1

        $ hg debugindex -m

           rev    offset  length  delta linkrev nodeid       p1           p2

             0         0      81     -1       0 57361477c778 000000000000 000000000000

             1        81      33      0       1 aeaab5a2ef74 57361477c778 000000000000

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				Create repo with old manifest

				$ cat << EOF >> $HGRCPATH
				> [format]
				> usegeneraldelta=yes
				> EOF

				$ hg init existing
				$ cd existing
				$ echo footext > foo
				$ hg add foo
				$ hg commit -m initial

				We're using v1, so no manifestv2 entry is in requires yet.

				$ grep manifestv2 .hg/requires
				[1]

				Let's clone this with manifestv2 enabled to switch to the new format for
				future commits.

				$ cd ..
				$ hg clone --pull existing new --config experimental.manifestv2=1
				requesting all changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 1 changes to 1 files
				updating to branch default
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ cd new

				Check that entry was added to .hg/requires.

				$ grep manifestv2 .hg/requires
				manifestv2

				Make a new commit.

				$ echo newfootext > foo
				$ hg commit -m new

				Check that the manifest actually switched to v2.

				$ hg debugdata -m 0
				foo\x0021e958b1dca695a60ee2e9cf151753204ee0f9e9 (esc)

				$ hg debugdata -m 1
				\x00 (esc)
				\x00foo\x00 (esc)
				I\xab\x7f\xb8(\x83\xcas\x15\x9d\xc2\xd3\xd3:5\x08\xbad5_ (esc)

				Check that manifestv2 is used if the requirement is present, even if it's
				disabled in the config.

				$ echo newerfootext > foo
				$ hg --config experimental.manifestv2=False commit -m newer

				$ hg debugdata -m 2
				\x00 (esc)
				\x00foo\x00 (esc)
				\xa6\xb1\xfb\xef]\x91\xa1\x19`\xf3.#\x90S\xf8\x06 \xe2\x19\x00 (esc)

				Check that we can still read v1 manifests.

				$ hg files -r 0
				foo

				$ cd ..

				Check that entry is added to .hg/requires on repo creation

				$ hg --config experimental.manifestv2=True init repo
				$ cd repo
				$ grep manifestv2 .hg/requires
				manifestv2

				Set up simple repo

				$ echo a > file1
				$ echo b > file2
				$ echo c > file3
				$ hg ci -Aqm 'initial'
				$ echo d > file2
				$ hg ci -m 'modify file2'

				Check that 'hg verify', which uses manifest.readdelta(), works

				$ hg verify
				checking changesets
				checking manifests
				crosschecking files in changesets and manifests
				checking files
				3 files, 2 changesets, 4 total revisions

				Check that manifest revlog is smaller than for v1

				$ hg debugindex -m
				rev offset length delta linkrev nodeid p1 p2
				0 0 81 -1 0 57361477c778 000000000000 000000000000
				1 81 33 0 1 aeaab5a2ef74 57361477c778 000000000000