Hi,
I'm not sure that it's a fastcgi problem.
As you can see from the postgresql log, postgresql reports a
warning: 'WARNING: 25001: there is already a transaction in progress'.
The cause of that, I guess, is that mapserver, in mappostgis.c, sends
(another) 'BEGIN'. During the first call it also sent a BEGIN. In
mappostgis.c
there is a check on the outcome of the BEGIN (if(!result ||
PQresultStatus
(result) != PGRES_COMMAND_OK) { ) and I guess that it won't be OK
because
of the warning.
Digging around in the postgresql.conf file gave me an idea of changing
the '#client_min_messages = notice' to 'client_min_messages = error'. As
I
understand that means that postgresql won't report warnings back to the
client, mappostgis, and thus the test won't fail.
I haven't got any 'Segmentation faults' from the application when
running it as a static server since my change so I guess I'm on the
right track.
I wonder why mapserver sends repeating BEGINs and no ENDs. I
can't find any code for sending an END. Normally, no fastcgi with
persistant
connections, it won't matter since I guess that a closed connection also
means 'END'.
/Regards Bengt
-----Original Message-----
From: UMN MapServer Users List [mailto:[EMAIL PROTECTED] On
Behalf Of Frank Warmerdam
Sent: den 13 september 2007 14:48
To: MAPSERVER-USERS@LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Segmentation fault - mapserver -
postgis
Bengt Nilsson wrote:
> Hi,
>
> I'm trying to run mapserver as a static fastcgi (WMS)application but
> gets Segmenttaion fault every second time I request a map from the
> server. After that, the fastcgi server is restarted and works for one
> request again, and so on..
>
> My configuration is Apache 2.2.6, mod_fastcgi 2.4.2, mapserver 4.10.0,
> postgis 1.2.1, postgresql 8.1.4
Bengt,
I would be willing to follow up on this issue privately as I suspect an
issue in my fastcgi implementation within MapServer. It would be
helpful if you could file a bug report and attach a mapfile, and dump of
a minimal
table sufficient to reproduce the problem. Please assign the problem
directly to me (userid "warmerdam").
I would also appreciate it if you could test the problem with the
current MapServer RC though that isn't strictly necessary.
Best regards,
--
---------------------------------------+--------------------------------
---------------------------------------+------
I set the clouds in motion - turn up | Frank Warmerdam,
[EMAIL PROTECTED]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | President OSGeo,
http://osgeo.org
