Dkfilter's children consuming 125 Mb memory

[Aldert]

Hi all,

Very simple and short question. After I followed the howto on domainkeys and did some googling I managed to get it working. But now when I do top and sort it by % of memory usage there are 6 dkfilter.in and 6 dkfilter.out children. Summing the percentages gives a usage of about 30%, equivallent to about 125 megs of my RAM!

How to reduce the usage? Why should there be 6 children alive? How to reduce it to like 1 or 2? There is not many mail coming in, so that much children are not needed?

(this issue has not been, well, issued before)

TIA and B/R from the 'windy' Netherlands,
Aldert Berends

[falko]

Is the number ofchildren set somewhere in your dkfilter init script (or the scripts included in there)?

[Aldert]

Hello Falko!

Hmm, none that I can see of:

case "$1" in
	start-in)
		echo -n "Starting inbound DomainKeys-filter (dkfilter.in)..."

		# create directory for pid files if necessary
		test -d $PIDDIR || mkdir -p $PIDDIR || exit 1

		# start the filter
		$DKFILTER_IN_BIN $DKFILTER_COMMON_ARGS --pidfile=$DKFILTER_IN_PID $DKFILTER_IN_ARGS
		RETVAL=$?
		if [ $RETVAL -eq 0 ]; then
			echo done.
		else
			echo failed.
			exit $RETVAL
		fi
		;;

dkfilter.in does not say to start more children, so far I can see.

I currently have no knowledge on C++ and moreover not on apache's variables and parameters...

[falko]

Can you post the full init script?

[Aldert]

#!/bin/sh
#
# Copyright (c) 2005-2006 Messiah College.
#
### BEGIN INIT INFO
# Default-Start:  3 4 5
# Default-Stop:   0 1 2 6
# Description:    Runs dkfilter
### END INIT INFO

DKFILTERUSER=dkfilter
DKFILTERGROUP=dkfilter
DKFILTERDIR=/usr/local/dkfilter

HOSTNAME=`hostname -f`
DOMAIN=aerotronic.nl
DKFILTER_IN_ARGS="
	--hostname=$HOSTNAME
	127.0.0.1:10025 127.0.0.1:10026"
DKFILTER_OUT_ARGS="
	--keyfile=$DKFILTERDIR/private.key
	--selector=m1
	--domain=aerotronic.nl,aerotronicvds.jronline.nl
	--method=nofws
	--headers
	127.0.0.1:10027 127.0.0.1:10028"

DKFILTER_COMMON_ARGS="
	--user=$DKFILTERUSER
	--group=$DKFILTERGROUP
	--daemonize"

DKFILTER_IN_BIN="$DKFILTERDIR/bin/dkfilter.in"
DKFILTER_OUT_BIN="$DKFILTERDIR/bin/dkfilter.out"

PIDDIR=$DKFILTERDIR/var/run
DKFILTER_IN_PID=$PIDDIR/dkfilter_in.pid
DKFILTER_OUT_PID=$PIDDIR/dkfilter_out.pid

case "$1" in
	start-in)
		echo -n "Starting inbound DomainKeys-filter (dkfilter.in)..."

		# create directory for pid files if necessary
		test -d $PIDDIR || mkdir -p $PIDDIR || exit 1

		# start the filter
		$DKFILTER_IN_BIN $DKFILTER_COMMON_ARGS --pidfile=$DKFILTER_IN_PID $DKFILTER_IN_ARGS
		RETVAL=$?
		if [ $RETVAL -eq 0 ]; then
			echo done.
		else
			echo failed.
			exit $RETVAL
		fi
		;;

	start-out)
		echo -n "Starting outbound DomainKeys-filter (dkfilter.out)..."

		# create directory for pid files if necessary
		test -d $PIDDIR || mkdir -p $PIDDIR || exit 1

		# start the filter
		$DKFILTER_OUT_BIN $DKFILTER_COMMON_ARGS --pidfile=$DKFILTER_OUT_PID $DKFILTER_OUT_ARGS
		RETVAL=$?
		if [ $RETVAL -eq 0 ]; then
			echo done.
		else
			echo failed.
			exit $RETVAL
		fi
		;;

	stop-in)
		echo -n "Shutting down inbound DomainKeys-filter (dkfilter.in)..."
		if [ -f $DKFILTER_IN_PID ]; then
			kill `cat $DKFILTER_IN_PID` && rm -f $DKFILTER_IN_PID
			RETVAL=$?
			[ $RETVAL -eq 0 ] && echo done. || echo failed.
			exit $RETVAL
		else
			echo not running.
		fi
		;;
	stop-out)
		echo -n "Shutting down outbound DomainKeys-filter (dkfilter.out)..."
		if [ -f $DKFILTER_OUT_PID ]; then
			kill `cat $DKFILTER_OUT_PID` && rm -f $DKFILTER_OUT_PID
			RETVAL=$?
			[ $RETVAL -eq 0 ] && echo done. || echo failed.
			exit $RETVAL
		else
			echo not running.
		fi
		;;
	start)
		$0 start-in && $0 start-out || exit $?
		;;
	stop)
		$0 stop-in && $0 stop-out || exit $?
		;;
	restart)
		$0 stop && $0 start || exit $?
		;;
	status)
		echo -n "dkfilter.in..."
		if [ -f $DKFILTER_IN_PID ]; then
			pid=`cat $DKFILTER_IN_PID`
			if ps -ef |grep -v grep |grep -q "$pid"; then
				echo " running (pid=$pid)"
			else
				echo " stopped (pid=$pid not found)"
			fi
		else
			echo " stopped"
		fi
		echo -n "dkfilter.out..."
		if [ -f $DKFILTER_OUT_PID ]; then
			pid=`cat $DKFILTER_OUT_PID`
			if ps -ef |grep -v grep |grep -q "$pid"; then
				echo " running (pid=$pid)"
			else
				echo " stopped (pid=$pid not found)"
			fi
		else
			echo " stopped"
		fi
		;;
	*)
		echo "Usage: $0 {start|stop|restart|status}"
		exit 1
		;;
esac

Thanks for your time!

[falko]

Hm, there's no indication why it starts six children for dkfilter.in and another six for dkfilter.out...

[Aldert]

Indeed. Well, just a printscreen with the output of top a certain time:



After the following:

-bash-3.00# /etc/init.d/dkfilter status
dkfilter.in... running (pid=2584)
dkfilter.out... running (pid=2593)
-bash-3.00# /etc/init.d/dkfilter stop
Shutting down inbound DomainKeys-filter (dkfilter.in)...done.
Shutting down outbound DomainKeys-filter (dkfilter.out)...done.
-bash-3.00# /etc/init.d/dkfilter start
Starting inbound DomainKeys-filter (dkfilter.in)...running
done.
Starting outbound DomainKeys-filter (dkfilter.out)...running
done.

Still 6 children, with new pids of course. May be it is a good idea ask the designer to take a look at it?

[falko]

Originally Posted by Aldert

May be it is a good idea ask the designer to take a look at it?

Yes, I think he can explain it.