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Date: Mon, 27 Oct 2014 14:37:36 +0100
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: 6 times httpd2 & 6 times postgres
References: <DUB124-W25112CC3A5C217D635FB87B09E0 AT phx DOT gbl>
In-Reply-To: <DUB124-W25112CC3A5C217D635FB87B09E0@phx.gbl>
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On 10/27/2014 12:44 PM, Gery . wrote:
> When I start apache2 ('apachectl2 start'), this appears in /var/log/apache2/error_log:
>
> [Mon Oct 27 12:28:26 2014] [warn] Init: Session Cache is not configured [hint: SSLSessionCache]
> [Mon Oct 27 12:28:39 2014] [notice] Digest: generating secret for digest authentication ...
> [Mon Oct 27 12:28:39 2014] [notice] Digest: done
> [Mon Oct 27 12:28:41 2014] [notice] Apache/2.2.29 (Unix) mod_ssl/2.2.29 OpenSSL/1.0.1j DAV/2 PHP/5.5.18 configured -- resuming normal operations
>
> and 'ps -a | grep httpd2' gives (a similar call displayed 6 times):
>
>       5644    6064    6064       5644  ?       1001 12:31:13 /usr/sbin/httpd2
>       6064       1    6064       6064  ?       1001 12:31:11 /usr/sbin/httpd2
>       3084    6064    6064       3084  ?       1001 12:31:13 /usr/sbin/httpd2
>       5204    6064    6064       5204  ?       1001 12:31:12 /usr/sbin/httpd2
>       4088    6064    6064       4088  ?       1001 12:31:12 /usr/sbin/httpd2
>       4388    6064    6064       4388  ?       1001 12:31:13 /usr/sbin/httpd2
>
> When I stop apache2 ('apachectl2 stop'), this appears in /var/log/apache2/error_log:
>
> [Mon Oct 27 12:29:24 2014] [notice] caught SIGTERM, shutting down
> [Mon Oct 27 12:29:25 2014] [notice] seg fault or similar nasty error detected in the parent process
>
> Because I use postgresql, I get 6 similar calls once I start it ('pg_ctl start -D /usr/share/postgresql/data -l /usr/share/postgresql/data/pgsql.log'):
>
> $ ps -a | grep postgres
>       4580    5064    4580       4580  ?       1001 12:31:31 /usr/sbin/postgres
>       5064       1    5968       6056  pty0    1001 12:31:30 /usr/sbin/postgres
>       3300    5064    3300       3300  ?       1001 12:31:31 /usr/sbin/postgres
>       2480    5064    2480       2480  ?       1001 12:31:31 /usr/sbin/postgres
>       4540    5064    4540       4540  ?       1001 12:31:31 /usr/sbin/postgres
>       5552    5064    5552       5552  ?       1001 12:31:31 /usr/sbin/postgres
>
> I have two questions:
> 1. The "seg fault or similar nasty error detected in the parent process" message represents a problem? if yes, how do I solve it?
> 2. Why ps -a displays 6 times a similar call with httpd2 and postgres? is that the normal behavior?
>
> Thanks,
>
> Gery
>
> OS: win8.1 i5 (1.6GHz,8GB RAM), mapserver under cygwin
> $ uname -a CYGWIN_NT-6.3-WOW64 gery 1.7.32(0.274/5/3) 2014-08-13 23:03 i686 Cygwin 		 	   		

postgres (and I assume also apache) runs multiple instance of the demon 
to improve responsiveness to multiple requests

Regards
Marco


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