Hi all, I'm serving some repos using mod_dav_svn and svnserve, but don't want to maintain two configuration files with user accounts. I therefore had a look into PerlAuthenHandler to parse the passwd file of svnserve on my own and use that. During some tests I encountered the problem that most of the checkouts didn't finish properly, instead the process just seemed to hang. In the logs of httpd with a high trace level I could see that some RequireAny status wasn't satisfied, so there seemed to be some problem with authorization, but the logs of my PerlAuthenHandler looked OK: It got called several times, authorized the user and succeeded as expected. svn client was often downloading data during the checkout as well, so it at least partly succeeded. I had the feeling that httpd was stuck somewhere between recognizing that authorization is needed and calling my PerlAuthenHandler...
After hours of testing and debugging I think I found the problem: The number of Perl interpreters configured for the VHOST I use. Using the default settings[1] the problem occurred very often, but not always, using a configuration of only 1 interpreter to use at any time the problem occurred always and configuring 10 interpreters the problem didn't occur ever. I don't know why this happens because the VM I've tested has only 2 CPUs and can't process more than two things in parallel at all, so the default number of Perl interpreters with 3 should be more than enough. But for some reason it isn't... So my question is: How does SVN decide how many requests to issue in parallel? I have the feeling that I need to configure as much Perl interpreters as the highest number of concurrent requests any svn client may use. Is 10 a reasonable high number? Does the number e.g. depend on many small files in a repo directory to checkout and can't be predicted at all? Or am I totally wrong in my observation and you have some other idea about the problem? Thanks! [1] https://perl.apache.org/docs/2.0/user/config/config.html#C_PerlInterpStart_ Mit freundlichen Grüßen, Thorsten Schöning -- Thorsten Schöning E-Mail: thorsten.schoen...@am-soft.de AM-SoFT IT-Systeme http://www.AM-SoFT.de/ Telefon...........05151- 9468- 55 Fax...............05151- 9468- 88 Mobil..............0178-8 9468- 04 AM-SoFT GmbH IT-Systeme, Brandenburger Str. 7c, 31789 Hameln AG Hannover HRB 207 694 - Geschäftsführer: Andreas Muchow
