limit on the number of parallel branching operations?

[Madan U S <ma...@collab.net>]

Hi,

   Am trying some parallel branching operations on a bdb backed
   subversion repository(over dav). Am having trouble with 4 such
   concurrent access.

   The httpd log says...
----------------8<-----------------------------------------------------8<---------------------
[Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] Could not CHECKOUT resource /svn/xine-bdb/!svn/bln/11929.  [409, #0]
[Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] The specified activity does not exist.  [409, #190002]
[Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] Could not CHECKOUT resource /svn/xine-bdb/!svn/bln/11929.  [409, #0]
[Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] The specified activity does not exist.  [409, #190002]
----------------8<-----------------------------------------------------8<---------------------

   And the client side errors out with "The specified activity does
   not exist".

   And strangely, both times I tried, only the 1st and 4th threads gave
   this error :-\

   Am wondering if theres any limit to the number of parallel cp that
   can be done on a bdb backed repository. Does anybody know?

Regards,
Madan.

Re: limit on the number of parallel branching operations?

[Garrett Rooney <ro...@electricjellyfish.net>]

On 3/6/06, Madan U S <ma...@collab.net> wrote:
>
>
> Hi,
>
>     Am trying some parallel branching operations on a bdb backed
>     subversion repository(over dav). Am having trouble with 4 such
>     concurrent access.
>
>     The httpd log says...
> ----------------8<-----------------------------------------------------8<---------------------
>  [Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] Could not CHECKOUT
> resource /svn/xine-bdb/!svn/bln/11929.  [409, #0]
>  [Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] The specified
> activity does not exist.  [409, #190002]
>  [Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] Could not CHECKOUT
> resource /svn/xine-bdb/!svn/bln/11929.  [409, #0]
>  [Mon Mar 06 22:04:52 2006] [error] [client 10.2.8.114] The specified
> activity does not exist.  [409, #190002]
> ----------------8<-----------------------------------------------------8<---------------------
>
>     And the client side errors out with "The specified activity does
>     not exist".
>
>     And strangely, both times I tried, only the 1st and 4th threads gave
>     this error :-\
>
>     Am wondering if theres any limit to the number of parallel cp that
>     can be done on a bdb backed repository. Does anybody know?

What version of Subversion is this?  You might get better error
messages in apache's error log from either trunk or the 1.3.x release
branch.  It's also possible that tweaking some of the BDB parameters
in DB_CONFIG could improve the number of concurrent operations that
can occur.

It's really hard to be sure though, considering that you haven't
actually described what the individual operations are doing.

-garrett

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