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RFC: Changing default ra_dav timeout

From: Greg Hudson <ghudson_at_MIT.EDU>
Date: 2004-04-28 22:31:55 CEST

For svn 1.1, I'd like to increase the default HTTP timeout to 3600
seconds, from the built-in neon timeout of 120 seconds.

The fundamental reason for this change is that I don't think an RPC
system should time out at all; 3600 seconds seems like a reasonable
approximation of "forever" given that neon doesn't provide a way to
disable the timeout. The proximal reason is that libsvn_fs_fs can
take a while to finalize a big commit (Josh measured it at five
minutes to finalize the commit of a 50,000-file Mozilla source import,
on his machine), and having that time out would hurt.

(It would be possible to change the libsvn_fs_fs design so that there
is no expensive finalization phase before a commit is completed, but
it would add a lot of complexity, and one of the explicit tradeoffs of
libsvn_fs_fs is that it's supposed to make reads simpler at the
expense of commit throughput.)

Anyway, here's your chance to object before this goes into the trunk.

Index: subversion/libsvn_ra_dav/session.c
===================================================================
--- subversion/libsvn_ra_dav/session.c (revision 9551)
+++ subversion/libsvn_ra_dav/session.c (working copy)
@@ -39,6 +39,8 @@
 
 #include "ra_dav.h"
 
+#define DEFAULT_HTTP_TIMEOUT 3600
+
 

 /* a cleanup routine attached to the pool that contains the RA session
    baton. */
@@ -641,11 +643,10 @@
           }
       }
 
- if (timeout)
- {
- ne_set_read_timeout(sess, timeout);
- ne_set_read_timeout(sess2, timeout);
- }
+ if (!timeout)
+ timeout = DEFAULT_HTTP_TIMEOUT;
+ ne_set_read_timeout(sess, timeout);
+ ne_set_read_timeout(sess2, timeout);
   }
 
   /* make sure we will eventually destroy the session */

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Received on Wed Apr 28 22:32:34 2004

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