Please post your config. On Fri, Oct 17, 2014 at 4:55 AM, Calin Pavel <calin.pa...@codemart.ro> wrote:
> Hello everybody, > > I do have an .NET application (Windows Service) that collects data from a > lot of sources (DBs, log files, machines event logs, ...) and uses Log4Net > to log details of the actions / execution. As expected, I'm using a high > number of threads to collect data, threads that are writing logs in some > files (RollingFileAppenderer). > > Lately it happens that the entire application is BLOCKED because all > threads were trying to acquire a read lock, like in the stack trace: > 000000001ac3d998 00000000774715fa [HelperMethodFrame: 000000001ac3d998] > System.Threading.Thread.SleepInternal(Int32) > 000000001ac3da90 000007fef747b5e9 System.Threading.Thread.Sleep(Int32) > 000000001ac3dac0 000007fef5fb9631 > System.Threading.ReaderWriterLockSlim.EnterMyLockSpin() > 000000001ac3db90 000007fef5cd297e > System.Threading.ReaderWriterLockSlim.TryEnterReadLockCore(TimeoutTracker) > 000000001ac3dbf0 000007fef5cd28fa > System.Threading.ReaderWriterLockSlim.TryEnterReadLock(TimeoutTracker) > 000000001ac3dc40 000007fe98fb4efd > log4net.Repository.Hierarchy.Logger.CallAppenders(log4net.Core.LoggingEvent) > 000000001ac3dcc0 000007fe98fb4907 > log4net.Repository.Hierarchy.Logger.Log(System.Type, log4net.Core.Level, > System.Object, System.Exception) > 000000001ac3dd30 000007fe98fb47f9 log4net.Core.LogImpl.Info(System.Object) > > .... > > Did you encountered this before or did anybody else reported similar > problems? > > May be it's important to mention: > - I'm using Log4Net 1.2.13, .NET 4.5 on Windows 2008 R2 > - that my threads have a timeout, and if they do not finish the job in the > given interval they are aborted. > > In relation with this, I found a possible explanation of application > hanging here: > http://chabster.blogspot.ro/2013/07/a-story-of-orphaned-readerwriterlockslim.html > > Could it be that the acquire of read lock in Logger.CallAppenderers method > to generate our problems? > > Thank you in advance, > Calin Pavel >
