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mdbx: update ChangeLog for last fixes.
Change-Id: I9e9a56c02212cb2bd698fb0dddb42ecd127e3936
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ChangeLog.md
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ChangeLog.md
@ -15,19 +15,21 @@ TODO:
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- [Engage new terminology](https://github.com/erthink/libmdbx/issues/137).
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- [Engage new terminology](https://github.com/erthink/libmdbx/issues/137).
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- Packages for [Astra Linux](https://astralinux.ru/), [ALT Linux](https://www.altlinux.org/), [ROSA Linux](https://www.rosalinux.ru/), Fedora/RHEL, Debian/Ubuntu.
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- Packages for [Astra Linux](https://astralinux.ru/), [ALT Linux](https://www.altlinux.org/), [ROSA Linux](https://www.rosalinux.ru/), Fedora/RHEL, Debian/Ubuntu.
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## v0.10.0 scheduled at 2021-05-09
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## v0.10.0 at 2021-05-09
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Acknowledgements:
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Acknowledgements:
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- [Mahlon E. Smith](https://github.com/mahlonsmith) for [Ruby bindings](https://rubygems.org/gems/mdbx/).
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- [Mahlon E. Smith](https://github.com/mahlonsmith) for [Ruby bindings](https://rubygems.org/gems/mdbx/).
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- [Alex Sharov](https://github.com/AskAlexSharov) for [mdbx-go](https://github.com/torquem-ch/mdbx-go) , bug reporting and testing.
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- [Alex Sharov](https://github.com/AskAlexSharov) for [mdbx-go](https://github.com/torquem-ch/mdbx-go), bug reporting and testing.
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- [Artem Vorotnikov](https://github.com/vorot93) for bug reporting and PR.
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- [Artem Vorotnikov](https://github.com/vorot93) for bug reporting and PR.
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- [Paolo Rebuffo](https://www.linkedin.com/in/paolo-rebuffo-8255766/), [Alexey Akhunov](https://github.com/AlexeyAkhunov) and Mark Grosberg for donations.
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- [Paolo Rebuffo](https://www.linkedin.com/in/paolo-rebuffo-8255766/), [Alexey Akhunov](https://github.com/AlexeyAkhunov) and Mark Grosberg for donations.
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- [Noel Kuntze](https://github.com/Thermi) for preliminary [Python bindings](https://github.com/Thermi/libmdbx/tree/python-bindings)
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- [Noel Kuntze](https://github.com/Thermi) for preliminary [Python bindings](https://github.com/Thermi/libmdbx/tree/python-bindings)
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New features:
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New features:
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- Added `mdbx_env_set_option()` and `mdbx_env_get_option()` for controls various runtime options for an environment (announce of this feature was missed in a previous news).
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- Added `mdbx_env_set_option()` and `mdbx_env_get_option()` for controls
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various runtime options for an environment (announce of this feature was missed in a previous news).
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- Added `MDBX_DISABLE_PAGECHECKS` build option to disable some checks to reduce an overhead
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- Added `MDBX_DISABLE_PAGECHECKS` build option to disable some checks to reduce an overhead
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and detection probability of database corruption to a values closer to the LMDB.
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and detection probability of database corruption to a values closer to the LMDB.
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The `MDBX_DISABLE_PAGECHECKS=1` provides a performance boost of about 10% in CRUD scenarios,
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The `MDBX_DISABLE_PAGECHECKS=1` provides a performance boost of about 10% in CRUD scenarios,
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@ -40,7 +42,8 @@ New features:
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- Added the `mdbx_drop` similar to LMDB command-line tool to purge or delete (sub)database(s).
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- Added the `mdbx_drop` similar to LMDB command-line tool to purge or delete (sub)database(s).
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- [Ruby bindings](https://rubygems.org/gems/mdbx/) is available now by [Mahlon E. Smith](https://github.com/mahlonsmith).
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- [Ruby bindings](https://rubygems.org/gems/mdbx/) is available now by [Mahlon E. Smith](https://github.com/mahlonsmith).
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- Added `MDBX_ENABLE_MADVISE` build option which controls the use of POSIX `madvise()` hints and friends.
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- Added `MDBX_ENABLE_MADVISE` build option which controls the use of POSIX `madvise()` hints and friends.
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- The internal node sizes were refined, resulting in a reduction in large/overflow pages in some use cases and a slight increase in limits for a keys size to ≈½ of page size.
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- The internal node sizes were refined, resulting in a reduction in large/overflow pages in some use cases
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and a slight increase in limits for a keys size to ≈½ of page size.
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- Added to `mdbx_chk` output number of keys/items on pages.
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- Added to `mdbx_chk` output number of keys/items on pages.
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- Added explicit `install-strip` and `install-no-strip` targets to the `Makefile` (https://github.com/erthink/libmdbx/pull/180).
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- Added explicit `install-strip` and `install-no-strip` targets to the `Makefile` (https://github.com/erthink/libmdbx/pull/180).
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- Major rework page splitting (af9b7b560505684249b76730997f9e00614b8113) for
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- Major rework page splitting (af9b7b560505684249b76730997f9e00614b8113) for
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@ -58,20 +61,26 @@ New features:
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to DB file without further penalty during transaction commit.
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to DB file without further penalty during transaction commit.
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As a result, page swapping and I/O could be significantly reduced during extra large transactions and/or lack of memory.
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As a result, page swapping and I/O could be significantly reduced during extra large transactions and/or lack of memory.
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- Minimized reading leaf-pages during dropping subDB(s) and nested trees.
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- Minimized reading leaf-pages during dropping subDB(s) and nested trees.
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- Major rework a spilling of dirty pages to support [LRU](https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU)) policy and prioritization for a large/overflow pages.
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- Major rework a spilling of dirty pages to support [LRU](https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU))
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policy and prioritization for a large/overflow pages.
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- Statistics of page operations (split, merge, copy, spill, etc) now available through `mdbx_env_info_ex()`.
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- Statistics of page operations (split, merge, copy, spill, etc) now available through `mdbx_env_info_ex()`.
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- Auto-setup limit for length of dirty pages list (`MDBX_opt_txn_dp_limit` option).
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- Auto-setup limit for length of dirty pages list (`MDBX_opt_txn_dp_limit` option).
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- Support `make options` to list available build options.
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- Support `make options` to list available build options.
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- Support `make help` to list available make targets.
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- Support `make help` to list available make targets.
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- Silently `make`'s build by default.
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- Silently `make`'s build by default.
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- Preliminary [Python bindings](https://github.com/Thermi/libmdbx/tree/python-bindings) is available now by [Noel Kuntze](https://github.com/Thermi) (https://github.com/erthink/libmdbx/issues/147).
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- Preliminary [Python bindings](https://github.com/Thermi/libmdbx/tree/python-bindings) is available now
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by [Noel Kuntze](https://github.com/Thermi) (https://github.com/erthink/libmdbx/issues/147).
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Backward compatibility break:
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Backward compatibility break:
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- The `MDBX_AVOID_CRT` build option was renamed to `MDBX_WITHOUT_MSVC_CRT`.
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- The `MDBX_AVOID_CRT` build option was renamed to `MDBX_WITHOUT_MSVC_CRT`.
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This option is only relevant when building for Windows.
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This option is only relevant when building for Windows.
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- The `mdbx_env_stat()` always, and `mdbx_env_stat_ex()` when called with the zeroed transaction parameter, now internally start temporary read transaction and thus may returns `MDBX_BAD_RSLOT` error.
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- The `mdbx_env_stat()` always, and `mdbx_env_stat_ex()` when called with the zeroed transaction parameter,
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now internally start temporary read transaction and thus may returns `MDBX_BAD_RSLOT` error.
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So, just never use deprecated `mdbx_env_stat()' and call `mdbx_env_stat_ex()` with transaction parameter.
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So, just never use deprecated `mdbx_env_stat()' and call `mdbx_env_stat_ex()` with transaction parameter.
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- The build option `MDBX_CONFIG_MANUAL_TLS_CALLBACK` was removed and now just a non-zero value of
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the `MDBX_MANUAL_MODULE_HANDLER` macro indicates the requirement to manually call `mdbx_module_handler()`
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when loading libraries and applications uses statically linked libmdbx on an obsolete Windows versions.
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Fixes:
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Fixes:
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@ -88,6 +97,10 @@ Fixes:
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- Switched to using Heap-functions instead of LocalAlloc/LocalFree on Windows.
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- Switched to using Heap-functions instead of LocalAlloc/LocalFree on Windows.
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- Fixed `mdbx_env_stat_ex()` to returning statistics of the whole environment instead of MainDB only (https://github.com/erthink/libmdbx/issues/190).
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- Fixed `mdbx_env_stat_ex()` to returning statistics of the whole environment instead of MainDB only (https://github.com/erthink/libmdbx/issues/190).
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- Fixed building by GCC 4.8.5 (added workaround for a preprocessor's bug).
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- Fixed building by GCC 4.8.5 (added workaround for a preprocessor's bug).
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- Fixed building C++ part for iOS <= 13.0 (unavailability of `std::filesystem::path`).
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- Fixed building for Windows target versions prior to Windows Vista (`WIN32_WINNT < 0x0600`).
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- Fixed building by MinGW for Windows (https://github.com/erthink/libmdbx/issues/155).
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## v0.9.3 at 2021-02-02
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## v0.9.3 at 2021-02-02
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