view tests/test-clonebundles-autogen.t @ 51681:522b4d729e89

mmap: populate the mapping by default

Without pre-population, accessing all data through a mmap can result in many
pagefault, reducing performance significantly. If the mmap is prepopulated, the
performance can no longer get slower than a full read.
(See benchmark number below)

In some cases were very few data is read, prepopulating can be overkill and
slower than populating on access (through page fault). So that behavior can be
controlled when the caller can pre-determine the best behavior.
(See benchmark number below)

In addition, testing with populating in a secondary thread yield great result
combining the best of each approach. This might be implemented in later
changesets.

In all cases, using mmap has a great effect on memory usage when many processes
run in parallel on the same machine.

### Benchmarks

# What did I run

A couple of month back I ran a large benchmark campaign to assess the impact of
various approach for using mmap with the revlog (and other files), it
highlighted a few benchmarks that capture the impact of the changes well. So to
validate this change I checked the following:

- log command displaying various revisions
  (read the changelog index)
- log command displaying the patch of listed revisions
  (read the changelog index, the manifest index and a few files indexes)
- unbundling a few revisions
  (read and write changelog, manifest and few files indexes, and walk the graph
  to update some cache)
- pushing a few revisions
  (read and write changelog, manifest and few files indexes, walk the graph to
  update some cache, performs various accesses locally and remotely during
  discovery)

Benchmarks were run using the default module policy (c+py) and the rust one. No
significant difference were found between the two implementation, so we will
present result using the default policy (unless otherwise specified).

I ran them on a few repositories :

- mercurial: a "public changeset only" copy of mercurial from 2018-08-01 using
  zstd compression and sparse-revlog

- pypy: a copy of pypy from 2018-08-01 using zstd compression and sparse-revlog

- netbeans: a copy of netbeans from 2018-08-01 using zstd compression and
  sparse-revlog

- mozilla-try: a copy of mozilla-try from 2019-02-18 using zstd compression and
  sparse-revlog

- mozilla-try persistent-nodemap: Same as the above but with a persistent
  nodemap. Used for the log --patch benchmark only

# Results

For the smaller repositories (mercurial, pypy), the impact of mmap is almost
imperceptible, other cost dominating the operation. The impact of prepopulating
is undiscernible in the benchmark we ran.

For larger repositories the benchmark support explanation given above:

On netbeans, the log can be about 1% faster without repopulation (for a
difference < 100ms) but unbundle becomes a bit slower, even when small.

### data-env-vars.name                             = netbeans-2018-08-01-zstd-sparse-revlog
  # benchmark.name                                 = hg.command.unbundle
  # benchmark.variants.issue6528                   = disabled
  # benchmark.variants.reuse-external-delta-parent = yes
  # benchmark.variants.revs                        = any-1-extra-rev
  # benchmark.variants.source                      = unbundle
  # benchmark.variants.verbosity                   = quiet
with-populate: 0.240157
no-populate:   0.265087  (+10.38%, +0.02)
  # benchmark.variants.revs                        = any-100-extra-rev
with-populate: 1.459518
no-populate:   1.481290   (+1.49%, +0.02)
 ## benchmark.name                                 = hg.command.push
  # benchmark.variants.explicit-rev                = none
  # benchmark.variants.issue6528                   = disabled
  # benchmark.variants.protocol                    = ssh
  # benchmark.variants.reuse-external-delta-parent = yes
  # benchmark.variants.revs                        = any-1-extra-rev
with-populate: 0.771919
no-populate:   0.792025   (+2.60%, +0.02)
  # benchmark.variants.revs                        = any-100-extra-rev
with-populate: 1.459518
no-populate:   1.481290   (+1.49%, +0.02)


For mozilla-try, the "slow down" from pre-populate for small `hg log` is more
visible, but still small in absolute time. (using rust value for the persistent
nodemap value to be relevant).

### data-env-vars.name            = mozilla-try-2019-02-18-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # benchmark.variants.patch      = yes
  # benchmark.variants.limit-rev  = 1
with-populate: 0.237813
no-populate:   0.229452   (-3.52%, -0.01)
  # benchmark.variants.limit-rev  = 10
  # benchmark.variants.patch      = yes
with-populate: 1.213578
no-populate:   1.205189
### data-env-vars.name            = mozilla-try-2019-02-18-zstd-sparse-revlog
  # benchmark.variants.limit-rev  = 1000
  # benchmark.variants.patch      = no
  # benchmark.variants.rev        = tip
with-populate: 0.198607
no-populate:   0.195038   (-1.80%, -0.00)

However pre-populating provide a significant boost on more complex operations
like unbundle or push:

### data-env-vars.name                             = mozilla-try-2019-02-18-zstd-sparse-revlog
  # benchmark.name                                 = hg.command.push
  # benchmark.variants.explicit-rev                = none
  # benchmark.variants.issue6528                   = disabled
  # benchmark.variants.protocol                    = ssh
  # benchmark.variants.reuse-external-delta-parent = yes
  # benchmark.variants.revs                        = any-1-extra-rev
with-populate: 4.798632
no-populate:   4.953295   (+3.22%, +0.15)
  # benchmark.variants.revs                        = any-100-extra-rev
with-populate: 4.903618
no-populate:   5.014963   (+2.27%, +0.11)
 ## benchmark.name                                 = hg.command.unbundle
  # benchmark.variants.revs                        = any-1-extra-rev
with-populate: 1.423411
no-populate:   1.585365  (+11.38%, +0.16)
  # benchmark.variants.revs                        = any-100-extra-rev
with-populate: 1.537909
no-populate:   1.688489   (+9.79%, +0.15)

#require no-reposimplestore no-chg

initial setup

  $ hg init server
  $ cat >> server/.hg/hgrc << EOF
  > [extensions]
  > clonebundles =
  > 
  > [clone-bundles]
  > auto-generate.on-change = yes
  > upload-command = cp "\$HGCB_BUNDLE_PATH" "$TESTTMP"/final-upload/
  > delete-command = rm -f "$TESTTMP/final-upload/\$HGCB_BASENAME"
  > url-template = file://$TESTTMP/final-upload/{basename}
  > 
  > [devel]
  > debug.clonebundles=yes
  > EOF

  $ mkdir final-upload
  $ hg clone server client
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd client

Test bundles are not generated if formats are not given
=======================================================

  $ touch noformats
  $ hg -q commit -A -m 'add noformats'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  clone-bundle auto-generate enabled, but no formats specified: disabling generation
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  $ test -f ../server/.hg/clonebundles.manifest
  [1]
  $ hg debugstrip -r tip
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/client/.hg/strip-backup/4823cdad4f38-4b2c3b65-backup.hg
  $ hg --cwd ../server debugstrip -r tip
  saved backup bundle to $TESTTMP/server/.hg/strip-backup/4823cdad4f38-4b2c3b65-backup.hg
  clone-bundle auto-generate enabled, but no formats specified: disabling generation
  clone-bundle auto-generate enabled, but no formats specified: disabling generation

Test bundles are generated on push
==================================

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > auto-generate.formats = v2
  > EOF
  $ touch foo
  $ hg -q commit -A -m 'add foo'
  $ touch bar
  $ hg -q commit -A -m 'add bar'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  2 changesets found
  added 2 changesets with 2 changes to 2 files
  clone-bundles: starting bundle generation: bzip2-v2
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-2_revs-aaff8d2ffbbf_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-2_revs-aaff8d2ffbbf_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Newer bundles are generated with more pushes
--------------------------------------------

  $ touch baz
  $ hg -q commit -A -m 'add baz'
  $ touch buz
  $ hg -q commit -A -m 'add buz'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  4 changesets found
  added 2 changesets with 2 changes to 2 files
  clone-bundles: starting bundle generation: bzip2-v2

  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-4_revs-6427147b985a_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-2_revs-aaff8d2ffbbf_tip-*_txn.hg (glob)
  full-bzip2-v2-4_revs-6427147b985a_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Older bundles are cleaned up with more pushes
---------------------------------------------

  $ touch faz
  $ hg -q commit -A -m 'add faz'
  $ touch fuz
  $ hg -q commit -A -m 'add fuz'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  clone-bundles: deleting bundle full-bzip2-v2-2_revs-aaff8d2ffbbf_tip-*_txn.hg (glob)
  6 changesets found
  added 2 changesets with 2 changes to 2 files
  clone-bundles: starting bundle generation: bzip2-v2

  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-4_revs-6427147b985a_tip-*_txn.hg (glob)
  full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Test conditions to get them generated
=====================================

Check ratio

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > trigger.below-bundled-ratio = 0.5
  > EOF
  $ touch far
  $ hg -q commit -A -m 'add far'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-4_revs-6427147b985a_tip-*_txn.hg (glob)
  full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Check absolute number of revisions

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > trigger.revs = 2
  > EOF
  $ touch bur
  $ hg -q commit -A -m 'add bur'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  clone-bundles: deleting bundle full-bzip2-v2-4_revs-6427147b985a_tip-*_txn.hg (glob)
  8 changesets found
  added 1 changesets with 1 changes to 1 files
  clone-bundles: starting bundle generation: bzip2-v2
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg (glob)
  full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

(that one would not generate new bundles)

  $ touch tur
  $ hg -q commit -A -m 'add tur'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg (glob)
  full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Test generation through the dedicated command
=============================================

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > auto-generate.on-change = no
  > EOF

Check the command can generate content when needed
--------------------------------------------------

Do a push that makes the condition fulfilled,
Yet it should not automatically generate a bundle with
"auto-generate.on-change" not set.

  $ touch quoi
  $ hg -q commit -A -m 'add quoi'

  $ pre_push_manifest=`cat ../server/.hg/clonebundles.manifest|f --sha256 | sed 's/.*=//' | cat`
  $ pre_push_upload=`ls -1 ../final-upload|f --sha256 | sed 's/.*=//' | cat`
  $ ls -1 ../server/.hg/tmp-bundles

  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files

  $ post_push_manifest=`cat ../server/.hg/clonebundles.manifest|f --sha256 | sed 's/.*=//' | cat`
  $ post_push_upload=`ls -1 ../final-upload|f --sha256 | sed 's/.*=//' | cat`
  $ ls -1 ../server/.hg/tmp-bundles
  $ test "$pre_push_manifest" = "$post_push_manifest"
  $ test "$pre_push_upload" = "$post_push_upload"

Running the command should detect the stale bundles, and do the full automatic
generation logic.

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: deleting bundle full-bzip2-v2-6_revs-b1010e95ea00_tip-*_txn.hg (glob)
  clone-bundles: starting bundle generation: bzip2-v2
  10 changesets found
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg (glob)
  full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Check the command cleans up older bundles when possible
-------------------------------------------------------

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: deleting bundle full-bzip2-v2-8_revs-8353e8af1306_tip-*_txn.hg (glob)
  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Nothing is generated when the bundles are sufficiently up to date
-----------------------------------------------------------------

  $ touch feur
  $ hg -q commit -A -m 'add feur'

  $ pre_push_manifest=`cat ../server/.hg/clonebundles.manifest|f --sha256 | sed 's/.*=//' | cat`
  $ pre_push_upload=`ls -1 ../final-upload|f --sha256 | sed 's/.*=//' | cat`
  $ ls -1 ../server/.hg/tmp-bundles

  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files

  $ post_push_manifest=`cat ../server/.hg/clonebundles.manifest|f --sha256 | sed 's/.*=//' | cat`
  $ post_push_upload=`ls -1 ../final-upload|f --sha256 | sed 's/.*=//' | cat`
  $ ls -1 ../server/.hg/tmp-bundles
  $ test "$pre_push_manifest" = "$post_push_manifest"
  $ test "$pre_push_upload" = "$post_push_upload"

  $ hg -R ../server/ admin::clone-bundles-refresh

  $ post_refresh_manifest=`cat ../server/.hg/clonebundles.manifest|f --sha256 | sed 's/.*=//' | cat`
  $ post_refresh_upload=`ls -1 ../final-upload|f --sha256 | sed 's/.*=//' | cat`
  $ ls -1 ../server/.hg/tmp-bundles
  $ test "$pre_push_manifest" = "$post_refresh_manifest"
  $ test "$pre_push_upload" = "$post_refresh_upload"

Test modification of configuration
==================================

Testing that later runs adapt to configuration changes even if the repository is
unchanged.

adding more formats
-------------------

bundle for added formats should be generated

change configuration

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > auto-generate.formats = v1, v2
  > EOF

refresh the bundles

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: starting bundle generation: bzip2-v1
  11 changesets found

the bundle for the "new" format should have been added

  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Changing the ratio
------------------

Changing the ratio to something that would have triggered a bundle during the last push.

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > trigger.below-bundled-ratio = 0.95
  > EOF

refresh the bundles

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: starting bundle generation: bzip2-v2
  11 changesets found


the "outdated' bundle should be refreshed

  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg (glob)
  full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Test more command options
=========================

bundle clearing
---------------

  $ hg -R ../server/ admin::clone-bundles-clear
  clone-bundles: deleting bundle full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  clone-bundles: deleting bundle full-bzip2-v2-10_revs-3b6f57f17d70_tip-*_acbr.hg (glob)
  clone-bundles: deleting bundle full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)

Nothing should remain

  $ cat ../server/.hg/clonebundles.manifest
  $ ls -1 ../final-upload
  $ ls -1 ../server/.hg/tmp-bundles

background generation
---------------------

generate bundle using background subprocess
(since we are in devel mode, the command will still wait for the background
process to end)

  $ hg -R ../server/ admin::clone-bundles-refresh --background
  11 changesets found
  11 changesets found
  clone-bundles: starting bundle generation: bzip2-v1
  clone-bundles: starting bundle generation: bzip2-v2

bundles should have been generated

  $ cat ../server/.hg/clonebundles.manifest
  file:/*/$TESTTMP/final-upload/full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  file:/*/$TESTTMP/final-upload/full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../final-upload
  full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  $ ls -1 ../server/.hg/tmp-bundles

Test HTTP URL
=========================

  $ hg -R ../server/ admin::clone-bundles-clear
  clone-bundles: deleting bundle full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  clone-bundles: deleting bundle full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > url-template = https://example.com/final-upload/{basename}
  > EOF
  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: starting bundle generation: bzip2-v1
  11 changesets found
  clone-bundles: starting bundle generation: bzip2-v2
  11 changesets found


bundles should have been generated with the SNIREQUIRED option

  $ cat ../server/.hg/clonebundles.manifest
  https://example.com/final-upload/full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 REQUIRESNI=true (glob)
  https://example.com/final-upload/full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 REQUIRESNI=true (glob)

Test serving them through inline-clone bundle
=============================================

  $ cat >> ../server/.hg/hgrc << EOF
  > [clone-bundles]
  > auto-generate.serve-inline=yes
  > EOF
  $ hg -R ../server/ admin::clone-bundles-clear
  clone-bundles: deleting bundle full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  clone-bundles: deleting bundle full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)

initial generation
------------------


  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: starting bundle generation: bzip2-v1
  11 changesets found
  clone-bundles: starting bundle generation: bzip2-v2
  11 changesets found
  $ cat ../server/.hg/clonebundles.manifest
  peer-bundle-cache://full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  peer-bundle-cache://full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../server/.hg/bundle-cache
  full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  $ ls -1 ../final-upload

Regeneration eventually cleanup the old ones
--------------------------------------------

create more content
  $ touch voit
  $ hg -q commit -A -m 'add voit'
  $ touch ar
  $ hg -q commit -A -m 'add ar'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files

check first regeneration

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: starting bundle generation: bzip2-v1
  13 changesets found
  clone-bundles: starting bundle generation: bzip2-v2
  13 changesets found
  $ cat ../server/.hg/clonebundles.manifest
  peer-bundle-cache://full-bzip2-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  peer-bundle-cache://full-bzip2-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../server/.hg/bundle-cache
  full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
  full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  full-bzip2-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
  $ ls -1 ../final-upload

check first regeneration (should cleanup the one before that last)

  $ touch "investi"
  $ hg -q commit -A -m 'add investi'
  $ touch "lesgisla"
  $ hg -q commit -A -m 'add lesgisla'
  $ hg push
  pushing to $TESTTMP/server
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files

  $ hg -R ../server/ admin::clone-bundles-refresh
  clone-bundles: deleting inline bundle full-bzip2-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  clone-bundles: deleting inline bundle full-bzip2-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
  clone-bundles: starting bundle generation: bzip2-v1
  15 changesets found
  clone-bundles: starting bundle generation: bzip2-v2
  15 changesets found
  $ cat ../server/.hg/clonebundles.manifest
  peer-bundle-cache://full-bzip2-v1-15_revs-17615b3984c2_tip-*_acbr.hg BUNDLESPEC=bzip2-v1 (glob)
  peer-bundle-cache://full-bzip2-v2-15_revs-17615b3984c2_tip-*_acbr.hg BUNDLESPEC=bzip2-v2 (glob)
  $ ls -1 ../server/.hg/bundle-cache
  full-bzip2-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
  full-bzip2-v1-15_revs-17615b3984c2_tip-*_acbr.hg (glob)
  full-bzip2-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
  full-bzip2-v2-15_revs-17615b3984c2_tip-*_acbr.hg (glob)
  $ ls -1 ../final-upload

Check the url is correct
------------------------

  $ hg clone -U ssh://user@dummy/server ssh-inline-clone
  applying clone bundle from peer-bundle-cache://full-bzip2-v1-15_revs-17615b3984c2_tip-*_acbr.hg (glob)
  adding changesets
  adding manifests
  adding file changes
  added 15 changesets with 15 changes to 15 files
  finished applying clone bundle
  searching for changes
  no changes found
  15 local changesets published