Memory usage of two Django apps on Web91

The documentation on memory usage seems to be a bit out of date. So can someone help with the following:

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  PID   RSS COMMAND
 6220  1632 sshd: someone@notty
 6306  1544 /usr/libexec/openssh/sftp-server
 6387  1600 sshd: someone@pts/4
 6391  1500 -bash
10632 50064 /usr/local/apache2-mpm-peruser/bin/httpd -k start
11194  3476 /home/someone/webapps/djangoapp/apache2/bin/httpd -k start
12133   952 ps -u someone -o pid,rss,command
12134   768 awk {print $0}{sum+=$2} END {print "Total", sum/1024, "MB"}
19853 58048 /usr/local/apache2-mpm-peruser/bin/httpd -k start
26026  1996 /home/someone/webapps/djangoapp/apache2/bin/httpd -k start
26033  3012 /home/someone/webapps/djangoapp/apache2/bin/httpd -k start
Total 121.672 MB

There is a single django instance called djangoapp which is accessed via its own Apache instance. It has always been like this. Presumably the two apache instances /usr/local/apache2-mpm-peruser/bin/httpd are also part of someone's memory usage though they are not part of any app he created. The question is does every django own two of these fairly memoryt hungry processes? If so one must expect approx 234Mb of memory usage for two django apps. Which is too close to the 256Mb for comfort, is it not?

This is on web91.