Index: head/en_US.ISO8859-1/books/handbook/zfs/chapter.xml
===================================================================
--- head/en_US.ISO8859-1/books/handbook/zfs/chapter.xml
+++ head/en_US.ISO8859-1/books/handbook/zfs/chapter.xml
@@ -3087,8 +3087,10 @@
 	    or one half of <acronym>RAM</acronym>, whichever is more.
 	    However, a lower value should be used if the system will
 	    be running any other daemons or processes that may require
-	    memory.  This value can only be adjusted at boot time, and
-	    is set in <filename>/boot/loader.conf</filename>.</para>
+	    memory.  This value can be adjusted at runtime with
+	    &man.sysctl.8; and can be set in
+	    <filename>/boot/loader.conf</filename> or
+	    <filename>/etc/sysctl.conf</filename>.</para>
 	</listitem>
 
 	<listitem>
@@ -3103,8 +3105,10 @@
 	    directories, or frequent metadata operations, at the cost
 	    of less file data fitting in the <link
 	      linkend="zfs-term-arc"><acronym>ARC</acronym></link>.
-	    This value can only be adjusted at boot time, and is set
-	    in <filename>/boot/loader.conf</filename>.</para>
+	    This value can be adjusted at runtime with &man.sysctl.8;
+	    and can be set in
+	    <filename>/boot/loader.conf</filename> or
+	    <filename>/etc/sysctl.conf</filename>.</para>
 	</listitem>
 
 	<listitem>
@@ -3117,8 +3121,10 @@
 	    value to prevent other applications from pressuring out
 	    the entire <link
 	      linkend="zfs-term-arc"><acronym>ARC</acronym></link>.
-	    This value can only be adjusted at boot time, and is set
-	    in <filename>/boot/loader.conf</filename>.</para>
+	    This value can be adjusted at runtime with &man.sysctl.8;
+	    and can be set in
+	    <filename>/boot/loader.conf</filename> or
+	    <filename>/etc/sysctl.conf</filename>.</para>
 	</listitem>
 
 	<listitem>