March 2013 - slf4j-dev - mailman3.qos.ch

[qos-ch/slf4j]
by ceki 25 Mar '13

25 Mar '13

Branch: refs/tags/v_1.7.5 Home: https://github.com/qos-ch/slf4j

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[qos-ch/slf4j] 884d46: about to release 1.7.5
by Ceki Gulcu 25 Mar '13

25 Mar '13

Branch: refs/heads/master Home: https://github.com/qos-ch/slf4j Commit: 884d46eeffb6e09f88ce38e7e8adac852e78c3ec https://github.com/qos-ch/slf4j/commit/884d46eeffb6e09f88ce38e7e8adac852e78… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2013-03-25 (Mon, 25 Mar 2013) Changed paths: M integration/pom.xml M jcl-over-slf4j/pom.xml M jul-to-slf4j/pom.xml M log4j-over-slf4j/pom.xml M osgi-over-slf4j/pom.xml M pom.xml M slf4j-api/pom.xml M slf4j-ext/pom.xml M slf4j-jcl/pom.xml M slf4j-jdk14/pom.xml M slf4j-log4j12/pom.xml M slf4j-migrator/pom.xml M slf4j-nop/pom.xml M slf4j-simple/pom.xml M slf4j-site/pom.xml M slf4j-site/src/site/pages/news.html Log Message: ----------- about to release 1.7.5 Commit: 916dcc44e8b490b4ded137455b6b050fd39a2ee5 https://github.com/qos-ch/slf4j/commit/916dcc44e8b490b4ded137455b6b050fd39a… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2013-03-25 (Mon, 25 Mar 2013) Changed paths: M slf4j-site/src/site/pages/manual.html M slf4j-site/src/site/pages/news.html Log Message: ----------- minor edits Compare: https://github.com/qos-ch/slf4j/compare/4dc6af1af741...916dcc44e8b4

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Requesting permission to use source code from slf4j-taglib (and inquiring about its location)
by Nick Williams 25 Mar '13

25 Mar '13

Hello, I'm working on a tag library module for the new Log4j 2 coming out (hopefully) later this year. The slf4j-taglib sub-project is based on the Jakarta Commons Log Taglib, which was built for log4j and is retired. Log4j 2 is a vast improvement over Log4j, and some of its features were inspired by SLF4J. There is undoubtedly some very interrelated code history here, though I don't know the exact details of that on either side. Though the Log4j 2 tag library will obviously have some differences from slf4j-taglib, I can see how there may be some existing code that could be very useful to us. I'd like to go ahead and ask permission from the SLF4J developers to use code from slf4j-taglib for this project. The licenses are compatible (both Apache 2.0), so that won't be an issue. All I need is an email from y'all granting us permission. Also, there's the issue that I can't find the source code for slf4j-taglib. It's not in the JARs or ZIPs available for download from the SLF4J website, it's not on the github repository, and it's not in Maven. Could anyone point me to its location? Thanks in advance, Nick Williams

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[Bug 298] New: locks around logger maps inhibit concurrency
by bugzilla-daemon＠qos.ch 25 Mar '13

25 Mar '13

http://bugzilla.slf4j.org/show_bug.cgi?id=298 Summary: locks around logger maps inhibit concurrency Product: SLF4J Version: 1.7.x Platform: All OS/Version: All Status: NEW Severity: major Priority: P1 Component: Implementations AssignedTo: slf4j-dev(a)qos.ch ReportedBy: taras.tielkes(a)gmail.com I'm analyzing degraded performance in a new release of out web application. The application has relatively high throughput (>4k requests/s). We're seeing increased contention on the lock-guarded "loggerMap" in SLF4JLogFactory. The change that introduced this contention is that some of the libraries we're using (Spring, in this particular case) apparently have started creating Logger instances in request-scoped objects in new versions, increasing the volume of calls to SLF4JLogFactory.getInstance(). The top of the call stack of threads waiting for the lock in question looks like shown below. Given that SLF4J targets Java 5+, it seems that some of the util.concurrent constructs could be used to make logger retrieval lock-free for the common cases. ----------- http-/0.0.0.0:8080-187 [BLOCKED] CPU time: 3s org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(String) org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(Class) org.apache.commons.logging.LogFactory.getLog(Class) org.springframework.util.ConcurrencyThrottleSupport.<init>() org.springframework.core.task.SimpleAsyncTaskExecutor$ConcurrencyThrottleAdapter.<init>() org.springframework.core.task.SimpleAsyncTaskExecutor$ConcurrencyThrottleAdapter.<init>(SimpleAsyncTaskExecutor$1) org.springframework.core.task.SimpleAsyncTaskExecutor.<init>(String) org.springframework.web.context.request.async.WebAsyncManager.<init>() org.springframework.web.context.request.async.WebAsyncUtils.getAsyncManager(ServletRequest) org.springframework.web.servlet.FrameworkServlet.processRequest(HttpServletRequest, HttpServletResponse) org.springframework.web.servlet.FrameworkServlet.doPost(HttpServletRequest, HttpServletResponse) javax.servlet.http.HttpServlet.service(HttpServletRequest, HttpServletResponse) org.springframework.web.servlet.FrameworkServlet.service(HttpServletRequest, HttpServletResponse) javax.servlet.http.HttpServlet.service(ServletRequest, ServletResponse) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) org.apache.catalina.core.ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) ----------- -- Configure bugmail: http://bugzilla.slf4j.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.

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[qos-ch/slf4j] 4dc6af: use a ConcurrentHashMap in various loger factories...
by Ceki Gulcu 25 Mar '13

25 Mar '13

Branch: refs/heads/master Home: https://github.com/qos-ch/slf4j Commit: 4dc6af1af741d9419c33187033a210dd623ceff1 https://github.com/qos-ch/slf4j/commit/4dc6af1af741d9419c33187033a210dd623c… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2013-03-24 (Sun, 24 Mar 2013) Changed paths: M jcl-over-slf4j/src/main/java/org/apache/commons/logging/impl/SLF4JLogFactory.java M log4j-over-slf4j/src/main/java/org/apache/log4j/Log4jLoggerFactory.java M slf4j-jcl/src/main/java/org/slf4j/impl/JCLLoggerFactory.java M slf4j-jdk14/src/main/java/org/slf4j/impl/JDK14LoggerFactory.java M slf4j-log4j12/src/main/java/org/slf4j/impl/Log4jLoggerFactory.java M slf4j-simple/src/main/java/org/slf4j/impl/SimpleLoggerFactory.java Log Message: ----------- use a ConcurrentHashMap in various loger factories - fix bug #298

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[Bug 299] New: Minor refactoring in SLF4JBridgeHandler
by bugzilla-daemon＠qos.ch 25 Mar '13

25 Mar '13

http://bugzilla.slf4j.org/show_bug.cgi?id=299 Summary: Minor refactoring in SLF4JBridgeHandler Product: SLF4J Version: 1.7.x Platform: All OS/Version: All Status: NEW Severity: normal Priority: P1 Component: jul-to-slf4j AssignedTo: slf4j-dev(a)qos.ch ReportedBy: sdavids(a)gmx.de use private method -- Configure bugmail: http://bugzilla.slf4j.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.

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[qos-ch/slf4j] 730ca7: update end year to 2013
by Ceki Gulcu 21 Mar '13

21 Mar '13

Branch: refs/heads/master Home: https://github.com/qos-ch/slf4j Commit: 730ca751a9e7e30f0dc8025ebb57f15507ff0d4e https://github.com/qos-ch/slf4j/commit/730ca751a9e7e30f0dc8025ebb57f15507ff… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2013-03-21 (Thu, 21 Mar 2013) Changed paths: M slf4j-site/src/site/pages/license.html M slf4j-site/src/site/pages/templates/footer.js Log Message: ----------- update end year to 2013

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[qos-ch/slf4j] 192f47: remove unused INSTANCE field
by Ceki Gulcu 18 Mar '13

18 Mar '13

Branch: refs/heads/master Home: https://github.com/qos-ch/slf4j Commit: 192f47034eda752188f6e937b989c11427715ebb https://github.com/qos-ch/slf4j/commit/192f47034eda752188f6e937b989c1142771… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2013-03-18 (Mon, 18 Mar 2013) Changed paths: M slf4j-simple/src/main/java/org/slf4j/impl/SimpleLoggerFactory.java Log Message: ----------- remove unused INSTANCE field

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[Bug 285] New: Misc slf4j-simple fixes and enhancements
by bugzilla-daemon＠qos.ch 18 Mar '13

18 Mar '13

http://bugzilla.slf4j.org/show_bug.cgi?id=285 Summary: Misc slf4j-simple fixes and enhancements Product: SLF4J Version: 1.6.x Platform: All OS/Version: All Status: NEW Severity: normal Priority: P1 Component: Implementations AssignedTo: slf4j-dev(a)qos.ch ReportedBy: cedrik.lime(a)gmail.com (Note: version should be 1.7.x, which is unavailable in Bugzilla) Recent 1.7.x versions of SLF4J inadvertently broke the ability to turn off a given logger (in SimpleLogger module). This following pull request fixes this, as well as the following minor points: Bug fixes ========= * regression: restore ability to completely turn off logging for a given logger (level "off") * bug fix: force output file (if any) to UTF-8 to avoid platform-dependent surprises while logging to a file Enhancements ============ * Java 5 syntax (less Eclipse warnings) * update documentation (including example simplelogger.properties file which was out of sync with recent 1.7.[1-2] changes) * add SimpleLoggerAccess class to enable to change SimpleLogger logger levels at runtime (used e.g. in a monitoring utility) You will find all of those in pull request 28: https://github.com/qos-ch/slf4j/pull/28 Thanks! -- Configure bugmail: http://bugzilla.slf4j.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.

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[qos-ch/slf4j]
by ceki 18 Mar '13

18 Mar '13

Branch: refs/tags/v_1.7.4 Home: https://github.com/qos-ch/slf4j

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