Mark Sapiro wrote: > Mohamed CHAARI wrote: >> I'm using Mailman for lists management, in a collaboration >> infrastructure site. >> I configured Mailman so that an external archiver is used, but I >> hesitate to run this archiver in background or foreground. >> >> More concretely, in mm_cfg.py conf file, should I put: >> >> PUBLIC_EXTERNAL_ARCHIVER = 'cat > /var/run/mailman/mail_tmp; >> /usr/local/bin/external_arch %(listname)s' >> >> or >> >> PUBLIC_EXTERNAL_ARCHIVER = 'cat > /var/run/mailman/mail_tmp; >> /usr/local/bin/external_arch %(listname)s &' >> >> What do you recommend ? is there a difference, in terms of performance ? >> Is there a risk of system overload, for one of the 2 solutions, when >> dealing with too big archives ? (I have some archives exceeding 50 M) > > > The size of the archive is only going to influence > /usr/local/bin/external_arch whatever that is. Its performance/run > time may or may not depend on the size of the archive. > > There are potential issues either way (forground or background). The > external archiver command is run with the list locked. This is both > good and bad. It eliminates any potential race condition which might > overwrite /var/run/mailman/mail_tmp with a second message before the > first message is processed, at least if only one list is involved, but > it may keep the list locked for a long time if the external_arch > process is slow. In addition, if the external_arch shoud do something > that locks the list, a deadlock results. > > See > <http://mail.python.org/pipermail/mailman-users/2005-August/045994.html>. >
you mentioned, in the thread above (Aug 2005), that it would be better to have a unique temporary file, to avoid conflict problems ... I've tried this, in mm_cfg.py, using unix timestamp PUBLIC_EXTERNAL_ARCHIVER = 'cat > /var/run/mailman/mail_tmp.$(date +%s); /usr/local/bin/external_arch.pl %(listname)s &' but without success. is there a way to do it ? should I use Python functions to get unix timestamp for current date ? thanks -- --- --Mohamed CHAARI (mailto : [EMAIL PROTECTED]) ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp