This ensures the measured filesystem timestamp resolution will be only
used on the machine where it was measured and avoid errors in case the
~/.jgitconfig file is copied to another machine.
Bug: 551850
Change-Id: Iff2a11be62ca94c3bbe4a955182988dc50852f9f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This avoids polluting hand-crafted user level config with
auto-configured options which might disturb in environments where
the user level config is replicated between different machines.
Add a jgit config as parent of the system level config. Persist
measured timestamp resolutions always in this jgit config and read it
via the user global config. This has the effect that auto-configured
timestamp resolution will be used by default and can be overridden in
either the system level or user level config.
Store the jgit config under the XDG_CONFIG_HOME directory following the
XDG base directory specification [1] in order to ensure that we have
write permissions to persist the file. This has the effect that each OS
user will use its jgit config since they typically use different
XDG_CONFIG_HOME directories.
If the environment variable XDG_CONFIG_HOME is defined the jgit config
file is located at $XDG_CONFIG_HOME/jgit/config otherwise the default is
~/.config/jgit/config.
If you want to avoid redundant measurement for different OS users
manually copy the values measured and auto-configured for one OS user to
the system level git config.
[1] https://wiki.archlinux.org/index.php/XDG_Base_Directory
Bug: 551850
Change-Id: I0022bd40ae62f82e5b964c2ea25822eb55d94687
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Change-Id: Ia77f442e47c5670c2d6d279ba862044016aabd86
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Run JMH benchmarks using bazel
Benchmark for creating files and FileSnapshots
Implement benchmark for looking up FileStore of a given Path
JMH benchmark for SimpleLruCache
Update API problem filters
Remove unused API problem filters
Silence API errors for new API added since 5.1.0
Change-Id: I071536d630a95e89f5bbbf965a1571b9f5eb81ee
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.3:
Run JMH benchmarks using bazel
Benchmark for creating files and FileSnapshots
Implement benchmark for looking up FileStore of a given Path
JMH benchmark for SimpleLruCache
Update API problem filters
Remove unused API problem filters
Silence API errors for new API added since 5.1.0
Change-Id: Ib735c4039e24ec8b045ae2cc81df1e9e5c9fa996
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Run JMH benchmarks using bazel
Benchmark for creating files and FileSnapshots
Implement benchmark for looking up FileStore of a given Path
JMH benchmark for SimpleLruCache
Update API problem filters
Remove unused API problem filters
Silence API errors for new API added since 5.1.0
Change-Id: I00615958ab6fbdff601e87a9792aba5606cda12a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.1:
Run JMH benchmarks using bazel
Benchmark for creating files and FileSnapshots
Implement benchmark for looking up FileStore of a given Path
JMH benchmark for SimpleLruCache
Remove unused API problem filters
Silence API errors for new API added since 5.1.0
Change-Id: If91c55a192d3b2c441d9c8d414f2e24a7261b1b6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The benchmarks can be built and run using bazel by running:
$ bazel run //org.eclipse.jgit.benchmarks:benchmarks
Change-Id: I6679750eaa0f2be30ed9d45036e013b0ea4fcc86
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Results on Mac OS 10.14.6 using APFS:
Result "org.eclipse.jgit.benchmarks.LookupFileStoreBenchmark.testLookupFileStore":
44583.277 ±(99.9%) 2666.096 ns/op [Average]
(min, avg, max) = (43707.073, 44583.277, 45320.685), stdev = 692.377
CI (99.9%): [41917.181, 47249.373] (assumes normal distribution)
Secondary result
"org.eclipse.jgit.benchmarks.LookupFileStoreBenchmark.testLookupFileStore:·stack":
Stack profiler:
....[Thread state
distributions]........................................................
100.0% RUNNABLE
....[Thread state:
RUNNABLE].............................................................
42.5% 42.5% sun.nio.fs.UnixNativeDispatcher.realpath0
37.9% 37.9% sun.nio.fs.UnixNativeDispatcher.stat0
11.0% 11.0% sun.nio.fs.BsdNativeDispatcher.getfsstat
7.6% 7.6% sun.nio.fs.BsdNativeDispatcher.fsstatEntry
0.7% 0.7% sun.nio.fs.BsdNativeDispatcher.endfsstat
0.1% 0.1% sun.nio.fs.UnixPath.initOffsets
0.0% 0.0% sun.nio.fs.UnixFileAttributes.get
0.0% 0.0% java.util.zip.Inflater.inflateBytes
0.0% 0.0% sun.misc.Unsafe.compareAndSwapInt
0.0% 0.0% sun.nio.fs.BsdFileStore.findMountEntry
This shows that FS.attrCacheByPath should be useful to reduce overhead
of looking up the FileStore of a given file.
Change-Id: I7213086b42e0453f0ee149660d507dac2a4644cc
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
See [1] for JMH documentation and [2] how to use JMH in Eclipse.
The benchmarks pom currently cannot use the JGit parent pom due to an
ecj bug [3] regarding annotation processing. Hence for now do not
inherit from the JGit parent pom and copy the compiler plugin
configuration for javac from the parent pom.
After running the Maven build the benchmark can be run using Maven:
$ java -jar org.eclipse.jgit.benchmarks/target/benchmarks.jar
or in Eclipse by running the main method of the SimpleLruCacheBenchmark
class.
[1] https://openjdk.java.net/projects/code-tools/jmh/
[2] http://alblue.bandlem.com/Page/3/index.html
[3] https://eclip.se/532029
CQ: 20517
CQ: 20518
Change-Id: Idca8a9e0980f0b8a9c741c4c9e97d03c62f07c8d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
- filter errors for new APIs added in service release
- remove unused filters
Change-Id: Ifbf532b8a3c46d4ed78a38f6c75073a072b7f669
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Bazel: Bump bazel version to 1.0.0
Change-Id: I967ad9e0fa6f13c5217aafb8faedc4a7dfb37c58
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-5.3:
Bazel: Bump bazel version to 1.0.0
Change-Id: If07e2ff3281dc96bec206b68631d22be8fd4636a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Bazel: Bump bazel version to 1.0.0
Change-Id: Ife26567c08ec053741c9db4ca8b5b2836044dcde
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Prepare 5.3.7-SNAPSHOT builds
JGit v5.3.6.201910020505-r
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Ia1070fd170651ce827bc6b876c6764a44ffe60eb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.3:
Prepare 5.3.7-SNAPSHOT builds
JGit v5.3.6.201910020505-r
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Ia621d06a9489ee276c793de9dd4a77f4ff19e2ac
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: I3f11a83e177daefa0a2e91173f70f9547067f713
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
# By Matthias Sohn (2) and Saša Živkov (1)
* stable-5.1:
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Iaae4b171eaa0081f9142489de8df94ab455d65f7
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
In the Config#StringReader we relied on ArrayIndexOutOfBoundsException
to detect the end of the input. Creation of exception with (deep) stack
trace can significantly degrade performance in case when we read
thousands of config files, like in the case when Gerrit reads all
external ids from the NoteDb.
Use the buf.length to detect the end of the input.
Change-Id: I12266f25751373a870ce3fa623cf2a95d882d521
Older JGit stored only milliseconds timestamps in the index. Newer
JGit may get finer timestamps from the file system. This leads to
slow index diffs when a new JGit runs against an index produced
by older JGit because many timestamps will differ and JGit will
then do many content checks. See [1].
Handle this migration case by only comparing milliseconds if the
index entry has only millisecond precision.
The inverse may also occur; also compare only milliseconds if the
file timestamp has only millisecond precision.
Do the same also for microsecond resolution. On Windows, NTFS may
provide 100ns resolution and may be used by external programs writing
the index, but Java's WindowsFileAttributes may provide only
microseconds.
File timestamp precision in Java depends not only on the Java APIs
used by different JGit versions but may also change when running the
same Java code on different VMs. And of course the resolution may
vary among operating and file systems. Moreover, timestamp precision
in the index depends on the program that wrote the index. Canonical
git may use a different resolution, maybe even different between git
versions.
[1] https://www.eclipse.org/forums/index.php/t/1100344/
Change-Id: Idfd08606c883cb98787b2138f9baf0cc89a57b56
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If CheckStat is MINIMAL or timestamps have no nanosecond part
WorkingTreeIterator.compareMetaData only checks the second part of
timestamps and ignores nanoseconds which may have ended up in the index
by using native git.
If
fileLastModified.getEpochSecond() == cacheLastModified.getEpochSecond()
we currently proceed comparing fileLastModified and cacheLastModified
with full precision which is wrong since we determined that we detected
reduced timestamp resolution.
Fix this and also handle smudged index entries for CheckStat.MINIMAL.
Change-Id: I6149885903ac63d79b42d234cc02aa4e19578f3c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Format BUILD files with buildifier
Format BUILD files with buildifier
[error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
Bazel: Format BUILD files with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Fix warning about deprecated lib.bzl
Format lib/BUILD with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Bazel: Bump skylib library version to 0.8.0
Use bazelisk to switch between used bazel version
Bazel: Require minimum bazel version 0.17.1
Fix wrong placeholder index in error message packInaccessible
JGitText: Remove unused externalized strings
RepoText: Remove unused externalized string
CLI: Remove unused externalized strings
Change-Id: Idf3abd80ad3b00188f655e638d9908228770911f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Other than Maven bazel seems unable to cope with abstract
AllFactoriesHttpTestCase having no test methods, hence tag this class
with @Ignore.
Change-Id: I9dfe43f882ad073b284648e24844b51877d87776
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Masaya Suzuki
Matthias Sohn
Thomas Wolf
David Pursehouse
Saša Živkov