Hi, My jenkins instance was a little slower to respond this morning, I thought maybe a bunch of jobs were running at the time, but the run queue was empty. top showed the process running at 700%, basically 7 threads pegging a core. Each was hung in the following code:
"RequestHandlerThread[#112]" daemon prio=10 tid=0x00002aaab80c7000 nid=0x721e runnable [0x00000000413c8000] java.lang.Thread.State: RUNNABLE at java.util.zip.Deflater.deflateBytes(Native Method) at java.util.zip.Deflater.deflate(Deflater.java:306) - locked <0x00000000e194f3c0> (a java.util.zip.ZStreamRef) at java.util.zip.DeflaterOutputStream.deflate(DeflaterOutputStream.java:159) at java.util.zip.DeflaterOutputStream.write(DeflaterOutputStream.java:118) at java.util.zip.GZIPOutputStream.write(GZIPOutputStream.java:72) - locked <0x00000000e194f5e8> (a java.util.zip.GZIPOutputStream) at org.kohsuke.stapler.compression.FilterServletOutputStream.write(FilterServletOutputStream.java:31) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:130) - locked <0x00000000e194f640> (a java.io.OutputStreamWriter) at java.io.OutputStreamWriter.close(OutputStreamWriter.java:216) at java.io.PrintWriter.close(PrintWriter.java:295) - locked <0x00000000e194f640> (a java.io.OutputStreamWriter) at org.kohsuke.stapler.compression.CompressionFilter.reportException(CompressionFilter.java:77) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:53) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at winstone.RequestDispatcher.forward(RequestDispatcher.java:331) at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:215) at winstone.RequestHandlerThread.run(RequestHandlerThread.java:138) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) I thought maybe I had 7 users streaming job output, but netstat showed no open connections. The following error was in the log 7 times: WARNING: Untrapped servlet exception winstone.ClientSocketException: Failed to write to client at winstone.ClientOutputStream.write(ClientOutputStream.java:41) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123) at winstone.WinstoneOutputStream.commit(WinstoneOutputStream.java:167) at winstone.WinstoneOutputStream.flush(WinstoneOutputStream.java:219) at winstone.WinstoneOutputStream.close(WinstoneOutputStream.java:229) at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:149) at org.kohsuke.stapler.compression.FilterServletOutputStream.close(FilterServletOutputStream.java:36) at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:422) at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:249) at org.kohsuke.stapler.Stapler.service(Stapler.java:152) at javax.servlet.http.HttpServlet.service(HttpServlet.java:45) at winstone.ServletConfiguration.execute(ServletConfiguration.java:248) at winstone.RequestDispatcher.forward(RequestDispatcher.java:333) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:376) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81) at winstone.FilterConfiguration.execute(FilterConfiguration.java:194) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366) at winstone.RequestDispatcher.forward(RequestDispatcher.java:331) at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:215) at winstone.RequestHandlerThread.run(RequestHandlerThread.java:138) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Caused by: java.net.SocketException: Connection reset at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at winstone.ClientOutputStream.write(ClientOutputStream.java:39) ... 42 more I can try upgrading to the latest, I'm currently running 1.477, not that far behind, and didn't think stapler changed that much