Index: sys/kern/sys_pipe.c
===================================================================
--- sys/kern/sys_pipe.c
+++ sys/kern/sys_pipe.c
@@ -230,6 +230,7 @@
 static void pipe_paircreate(struct thread *td, struct pipepair **p_pp);
 static __inline int pipelock(struct pipe *cpipe, int catch);
 static __inline void pipeunlock(struct pipe *cpipe);
+static void pipe_timestamp(struct timespec *tsp);
 #ifndef PIPE_NODIRECT
 static int pipe_build_write_buffer(struct pipe *wpipe, struct uio *uio);
 static void pipe_destroy_write_buffer(struct pipe *wpipe);
@@ -279,7 +280,7 @@
 	 */
 	rpipe = &pp->pp_rpipe;
 	bzero(rpipe, sizeof(*rpipe));
-	vfs_timestamp(&rpipe->pipe_ctime);
+	pipe_timestamp(&rpipe->pipe_ctime);
 	rpipe->pipe_atime = rpipe->pipe_mtime = rpipe->pipe_ctime;
 
 	wpipe = &pp->pp_wpipe;
@@ -389,6 +390,18 @@
 	}
 }
 
+static void
+pipe_timestamp(struct timespec *tsp)
+{
+
+	/*
+	 * This used to be vfs_timestamp but the higher precision is unnecessarily
+	 * and can very negatively affect performance in virtualized environments
+	 * (e.g., on vms running on amd64 when using the rdtscp instruction).
+	 */
+	getnanotime(tsp);
+}
+
 /*
  * The pipe system call for the DTYPE_PIPE type of pipes.  If we fail, let
  * the zone pick up the pieces via pipeclose().
@@ -779,7 +792,7 @@
 
 	/* XXX: should probably do this before getting any locks. */
 	if (error == 0)
-		vfs_timestamp(&rpipe->pipe_atime);
+		pipe_timestamp(&rpipe->pipe_atime);
 unlocked_error:
 	--rpipe->pipe_busy;
 
@@ -1271,7 +1284,7 @@
 		error = 0;
 
 	if (error == 0)
-		vfs_timestamp(&wpipe->pipe_mtime);
+		pipe_timestamp(&wpipe->pipe_mtime);
 
 	/*
 	 * We have something to offer,