stack walk with g1

gistfile1.txt

--- 40079459 ns (0.07%), 4 samples
  [ 0] StackWalk::walk(Handle, long, int, int, int, objArrayHandle, Thread*)
  [ 1] JVM_CallStackWalk
  [ 2] java.lang.StackStreamFactory$AbstractStackWalker.callStackWalk
  [ 3] java.lang.StackStreamFactory$AbstractStackWalker.beginStackWalk
  [ 4] java.lang.StackStreamFactory$AbstractStackWalker.walk
  [ 5] java.lang.StackWalker.walk
  [ 6] org.apache.logging.log4j.util.StackLocator.getCallerClass
  [ 7] org.apache.logging.log4j.util.StackLocatorUtil.getCallerClass
  [ 8] org.apache.logging.log4j.jcl.LogAdapter.getContext
  [ 9] org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger
  [10] org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance
  [11] org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance
  [12] org.apache.commons.logging.LogFactory.getLog
  [13] org.springframework.util.ConcurrencyThrottleSupport.<init>
  [14] org.springframework.core.task.SimpleAsyncTaskExecutor$ConcurrencyThrottleAdapter.<init>
  [15] org.springframework.core.task.SimpleAsyncTaskExecutor$ConcurrencyThrottleAdapter.<init>
  [16] org.springframework.core.task.SimpleAsyncTaskExecutor.<init>
  [17] org.springframework.web.context.request.async.WebAsyncManager.<init>
  [18] org.springframework.web.context.request.async.WebAsyncUtils.getAsyncManager
  [19] org.springframework.web.servlet.FrameworkServlet.processRequest
  [20] org.springframework.web.servlet.FrameworkServlet.doGet
  [21] javax.servlet.http.HttpServlet.service
  [22] org.springframework.web.servlet.FrameworkServlet.service
  [23] javax.servlet.http.HttpServlet.service
  [24] org.eclipse.jetty.servlet.ServletHolder.handle
  [25] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [26] com.outbrain.votes_online_db.filter.CookieHandlerFilter.doFilter
  [27] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [28] com.outbrain.cookielib.filter.OBUIDCookieHandlerFilter.doFilter
  [29] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [30] com.outbrain.odb.HdrMetricsFilter.doFilter
  [31] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [32] com.outbrain.tracing.servlet.filter.TraceIdResponseFilter.doFilter
  [33] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [34] io.opentracing.contrib.web.servlet.filter.TracingFilter.doFilter
  [35] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [36] org.eclipse.jetty.servlets.UserAgentFilter.doFilter
  [37] org.eclipse.jetty.servlets.GzipFilter.doFilter
  [38] org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter
  [39] org.eclipse.jetty.servlet.ServletHandler.doHandle
  [40] org.eclipse.jetty.server.handler.ScopedHandler.handle
  [41] org.eclipse.jetty.security.SecurityHandler.handle
  [42] org.eclipse.jetty.server.session.SessionHandler.doHandle
  [43] org.eclipse.jetty.server.handler.ContextHandler.doHandle
  [44] org.eclipse.jetty.servlet.ServletHandler.doScope
  [45] org.eclipse.jetty.server.session.SessionHandler.doScope
  [46] org.eclipse.jetty.server.handler.ContextHandler.doScope
  [47] org.eclipse.jetty.server.handler.ScopedHandler.handle
  [48] org.eclipse.jetty.server.handler.ContextHandlerCollection.handle
  [49] org.eclipse.jetty.server.handler.HandlerCollection.handle
  [50] org.eclipse.jetty.server.handler.HandlerWrapper.handle
  [51] com.outbrain.ob1k.server.jetty.handler.RequestTimeoutHandler.handle
  [52] org.eclipse.jetty.server.handler.HandlerWrapper.handle
  [53] org.eclipse.jetty.server.handler.StatisticsHandler.handle
  [54] org.eclipse.jetty.server.handler.HandlerWrapper.handle
  [55] org.eclipse.jetty.server.Server.handle
  [56] org.eclipse.jetty.server.HttpChannel.handle
  [57] org.eclipse.jetty.server.HttpConnection.onFillable
  [58] org.eclipse.jetty.io.AbstractConnection$2.run
  [59] org.eclipse.jetty.util.thread.QueuedThreadPool.runJob
  [60] org.eclipse.jetty.util.thread.QueuedThreadPool$3.run
  [61] java.lang.Thread.run