* stable-5.4:
Fix string format parameter for invalidRefAdvertisementLine
WindowCache: add metric for cached bytes per repository
pgm daemon: fallback to user and system config if no config specified
WindowCache: add option to use strong refs to reference ByteWindows
Replace usage of ArrayIndexOutOfBoundsException in treewalk
Add config constants for WindowCache configuration options
Change-Id: I76a62da98182f0c504b1ea8b7d37cecdf4eea7e0
* stable-5.3:
Fix string format parameter for invalidRefAdvertisementLine
WindowCache: add metric for cached bytes per repository
pgm daemon: fallback to user and system config if no config specified
WindowCache: add option to use strong refs to reference ByteWindows
Replace usage of ArrayIndexOutOfBoundsException in treewalk
Add config constants for WindowCache configuration options
Change-Id: I12002dbfed9dff14fc6d2df9787d92eab5b1fa78
* stable-5.2:
Fix string format parameter for invalidRefAdvertisementLine
WindowCache: add metric for cached bytes per repository
pgm daemon: fallback to user and system config if no config specified
WindowCache: add option to use strong refs to reference ByteWindows
Replace usage of ArrayIndexOutOfBoundsException in treewalk
Add config constants for WindowCache configuration options
Change-Id: I790098be00ff3f9b8278d54ae4fb7c11311816e9
* stable-5.1:
Fix string format parameter for invalidRefAdvertisementLine
WindowCache: add metric for cached bytes per repository
pgm daemon: fallback to user and system config if no config specified
WindowCache: add option to use strong refs to reference ByteWindows
Change-Id: I741059a1d0d5950ab5bc16ec70352655ee926a24
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The externalized error message added in f4fc640 ("BasePackConnection:
Check for expected length of ref advertisement", Dec 18, 2019) uses a
malformed string format. Since there is only one formatting argument,
it should be referenced with '{0}' rather than '{1}'.
Change-Id: Ibda864dfb0bb902fe07ae4bba73117b212046e8a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Since ObjectDatabase and PackFile don't know their repository use the
packfile's grand-grand-parent directory as an identifier for the
repository the packfile resides in.
Remove metric for a repository if the number of cached bytes for the
repository drops to 0 in order to ensure the map of cached bytes per
repository doesn't contain repositories which have no data cached in the
WindowCache.
Change-Id: I969ab8029db0a292e7585cbb36ca0baa797da20b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If a config file is passed via option --config-file then use only the
options defined in that file. This helps to concisely configure the
daemon without side effects from global and system level git configs.
Otherwise fallback to user and system level configs.
Change-Id: I242de248f257579874ad0bfe4882a22502353b1f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Java GC evicts all SoftReferences when the used heap size comes close to
the maximum heap size. This means peaks in heap memory consumption can
flush the complete WindowCache which was observed to have negative
impact on performance of upload-pack in Gerrit.
Hence add a boolean option core.packedGitUseStrongRefs to allow using
strong references to reference packfile pages cached in the WindowCache.
If this option is set to true Java gc can no longer flush the
WindowCache to free memory if the used heap comes close to the maximum
heap size. On the other hand this provides more predictable performance.
Bug: 553573
Change-Id: I9de406293087ab0fa61130c8e0829775762ece8d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.1:
Replace usage of ArrayIndexOutOfBoundsException in treewalk
Add config constants for WindowCache configuration options
Change-Id: I17da3c5183eca536aa2be3972bc5df45c9d75f1b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Using exceptions during normal operations - for example with the
desire of expanding an array in the failure case - can have a
severe performance impact. When exceptions are instantiated,
a stack trace is collected. Generating stack trace can be expensive.
Compared to that, checking an array for length - even if done many
times - is cheap since this is a check that can run in just a
handful of CPU cycles.
Change-Id: Ifaf10623f6a876c9faecfa44654c9296315adfcb
Signed-off-by: Patrick Hiesel <hiesel@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Fix API problem filters
Fix unclosed resource warning in SmartOutputStream
JschConfigSessionFactory: fix boxing warning
SshSupport#runSshCommand: don't throw exception in finally block
Don't override already managed maven-compiler-plugin version
Remove unused import from CreateFileSnapshotBenchmark
Remove duplicate ignore_optional_problems entry in .classpath
Update maven-site-plugin used by benchmark module to 3.8.2
Add dependency to enable site generation for benchmark module
Ignore warnings for generated source code in
org.eclipse.jgit.benchmark
Fix MBean registration
Enhance WindowCache statistics
Change-Id: I78902d5feecb2c09134b64ec2f3b48b2c3bab37d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.3:
Fix API problem filters
Fix unclosed resource warning in SmartOutputStream
JschConfigSessionFactory: fix boxing warning
SshSupport#runSshCommand: don't throw exception in finally block
Don't override already managed maven-compiler-plugin version
Remove unused import from CreateFileSnapshotBenchmark
Remove duplicate ignore_optional_problems entry in .classpath
Update maven-site-plugin used by benchmark module to 3.8.2
Add dependency to enable site generation for benchmark module
Ignore warnings for generated source code in
org.eclipse.jgit.benchmark
Fix MBean registration
Enhance WindowCache statistics
Change-Id: I1b560b36d169cfa02cc5450ad0fa0bd85f9f42d8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Fix API problem filters
Fix unclosed resource warning in SmartOutputStream
JschConfigSessionFactory: fix boxing warning
SshSupport#runSshCommand: don't throw exception in finally block
Don't override already managed maven-compiler-plugin version
Remove unused import from CreateFileSnapshotBenchmark
Remove duplicate ignore_optional_problems entry in .classpath
Update maven-site-plugin used by benchmark module to 3.8.2
Add dependency to enable site generation for benchmark module
Ignore warnings for generated source code in
org.eclipse.jgit.benchmark
Fix MBean registration
Enhance WindowCache statistics
Change-Id: I67a07d92718188bdf7f8a13b83e9f538ecf4b22f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The benchmark module currently has no parent, adjust the version used
here to the one used by all the other jgit Maven modules.
Change-Id: I8807a694fe23f8f131d1d22a58a3e18874d756cc
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The source code in the folder .apt_generated is generated by the JMH
code generator, so there's no point in raising any warnings as this
could only be fixed in the upstream code generator.
Change-Id: I882888e7bf924f9ae74182598fcb91671a5c9818
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add the following statistics
- cache hit count and hit ratio
- cache miss count and miss ratio
- count of successful and failed loads
- rate of failed loads
- load, eviction and request count
- average and total load time
Use LongAdder instead of AtomicLong to implement counters in order to
improve scalability.
Optionally expose these metrics via JMX, they are registered with the
platform MBean server if the config option jmx.WindowCacheStats = true
in the user or system level git config.
Bug: 553573
Change-Id: Ia2d5246ef69b9c2bd594a23934424bc5800774aa
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.4:
Bazel: Use java_plugin and java_binary from @rules_java in jmh.bzl
Bazel: Add missing newlines at end of BUILD files
Change-Id: I3dd2554cbad5bb224c2799b6b133fe91ab10abc3
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-5.3:
Bazel: Use java_plugin and java_binary from @rules_java in jmh.bzl
Bazel: Add missing newlines at end of BUILD files
Change-Id: I21878c42fd9abf7d858b534300df0fffe4bad431
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-5.2:
Bazel: Use java_plugin and java_binary from @rules_java in jmh.bzl
Bazel: Add missing newlines at end of BUILD files
Change-Id: Ie5e66f2e26c057c81101b0d110f91ea479eb362d
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-5.1:
Bazel: Use java_plugin and java_binary from @rules_java in jmh.bzl
Bazel: Add missing newlines at end of BUILD files
Change-Id: Ic1dc84a6c4a1cf430d329627642583fd6e0d0eaa
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
SystemReader.updateAll() must _not_ test whether the file exists. In
tests at least there are FileBasedConfigs with a null file. Test
configs should (and do) override isOutdated() to deal with this case.
Change-Id: I56303fe0d56afeb9f2203ee807a92c5dcf3809e9
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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>
Matthias Sohn
David Pursehouse
Patrick Hiesel
Thomas Wolf
Masaya Suzuki