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From Colm MacCarthaigh <c...@stdlib.net>
Subject [PATCH] [Resend EnableSendfile + Linux + IPv6]
Date Sun, 28 Sep 2003 14:24:32 GMT

I'd be grateful if something along these lines could be committed :)
We're finding more and more people getting hit by this problem
and it can be very painful to debug.

----- Forwarded message from Colm MacCarthaigh <colm@stdlib.net> -----

From: Colm MacCarthaigh <colm@stdlib.net>
Reply-To: colm@stdlib.net
Date: Mon, 1 Sep 2003 12:14:37 +0100
To: docs@httpd.apache.org
Subject: EnableSendfile + Linux + IPv6


The Linux TCP checksum offloading bugs are well-established
at this stage. Might aswell document it.

Index: manual/mod/core.html.en
===================================================================
RCS file: /home/cvspublic/httpd-2.0/docs/manual/mod/core.html.en,v
retrieving revision 1.83
diff -u -r1.83 core.html.en
--- manual/mod/core.html.en	6 Aug 2003 13:57:29 -0000	1.83
+++ manual/mod/core.html.en	1 Sep 2003 11:10:35 -0000
@@ -862,6 +862,8 @@
     system did not detect, especially if the binaries were built on
     another box and moved to such a machine with broken sendfile
     support.</li>
+    <li>On Linux the use of sendfile triggers TCP-checksum 
+    offloading bugs on certain networking cards when using IPv6.</li>
     <li>With a network-mounted <code class="directive"><a href="#documentroot">DocumentRoot</a></code>
(e.g., NFS or SMB),
     the kernel may be unable to serve the network file through
     its own cache.</li>
Index: manual/mod/core.xml
===================================================================
RCS file: /home/cvspublic/httpd-2.0/docs/manual/mod/core.xml,v
retrieving revision 1.76
diff -u -r1.76 core.xml
--- manual/mod/core.xml	6 Aug 2003 13:57:29 -0000	1.76
+++ manual/mod/core.xml	1 Sep 2003 11:10:35 -0000
@@ -800,6 +800,8 @@
     system did not detect, especially if the binaries were built on
     another box and moved to such a machine with broken sendfile
     support.</li>
+    <li>On Linux the use of sendfile triggers TCP-checksum 
+    offloading bugs on certain networking cards when using IPv6.</li>
     <li>With a network-mounted <directive
     module="core">DocumentRoot</directive> (e.g., NFS or SMB),
     the kernel may be unable to serve the network file through
-- 
Colm MacCárthaigh                        Public Key: colm+pgp@stdlib.net
colm@stdlib.net					  http://www.stdlib.net/

----- End forwarded message -----

-- 
Colm MacCárthaigh                        Public Key: colm+pgp@stdlib.net
colm@stdlib.net					  http://www.stdlib.net/

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