Bug 920792

Description of problem:
Removing orphaned units increases memory usage: ~2GB


Version-Release number of selected component (if applicable):
# rpm -qa | grep pulp
m2crypto-0.21.1.pulp-8.el6.x86_64
python-oauth2-1.5.170-3.pulp.el6.noarch
pulp-rpm-plugins-2.1.0-0.21.beta.noarch
python-pulp-bindings-2.1.0-0.21.beta.noarch
pulp-puppet-admin-extensions-2.1.0-0.21.beta.noarch
python-isodate-0.5.0-1.pulp.el6.noarch
python-pulp-puppet-common-2.1.0-0.21.beta.noarch
python-rhsm-1.8.0-1.pulp.el6.x86_64
mod_wsgi-3.4-1.pulp.el6.x86_64
pulp-selinux-2.1.0-0.21.beta.noarch
python-pulp-rpm-extension-2.1.0-0.21.beta.noarch
python-pulp-client-lib-2.1.0-0.21.beta.noarch
pulp-builtins-admin-extensions-2.1.0-0.21.beta.noarch
pulp-rpm-admin-extensions-2.1.0-0.21.beta.noarch
python-pulp-common-2.1.0-0.21.beta.noarch
python-pulp-rpm-common-2.1.0-0.21.beta.noarch
pulp-server-2.1.0-0.21.beta.noarch
pulp-puppet-plugins-2.1.0-0.21.beta.noarch
pulp-admin-client-2.1.0-0.21.beta.noarch
[root@ec2-23-21-39-197 ~]# rpm -qa | grep grinder
grinder-0.1.15-2.el6.noarch


How reproducible:
Always

Steps to Reproduce:
1.  pulp-admin rpm repo create --repo-id rhel6_x86_64 --feed-ca ./cdn.redhat.com-chain.crt --feed-cert ./1359391926_4512.crt --feed-key ./1359391926_4512.key  --feed https://cdn.redhat.com/content/dist/rhel/rhui/server/6/6.2/x86_64/os
2.  pulp-admin rpm repo sync run --repo-id rhel6_x86_64
3.  pulp-admin rpm repo delete --repo-id rhel6_x86_64
4.  pulp-admin orphan remove --all
  
Actual results:
After sync, yet before orphan removal wsgi consuming ~3.5GB
apache   10013 51.9 45.9 4798968 3517180 ?     Sl   12:26  50:10  \_ (wsgi:pulp)  

After orphan removal:
apache   10013 50.7 77.5 7233204 5932784 ?     Sl   12:26  50:56  \_ (wsgi:pulp)  

Expected results:

Less than 2GB of memory increase 

Additional info:

# pulp-admin rpm repo create --repo-id rhel6_x86_64 --feed-ca ./cdn.redhat.com-chain.crt --feed-cert ./1359391926_4512.crt --feed-key ./1359391926_4512.key  --feed https://cdn.redhat.com/content/dist/rhel/rhui/server/6/6.2/x86_64/os
Successfully created repository [rhel6_x86_64]

[root@ec2-23-21-39-197 ~]# time pulp-admin rpm repo sync run --repo-id rhel6_x86_64
+----------------------------------------------------------------------+
                Synchronizing Repository [rhel6_x86_64]
+----------------------------------------------------------------------+

This command may be exited by pressing ctrl+c without affecting the actual
operation on the server.

Downloading metadata...
[|]
... completed

Downloading repository content...
[==================================================] 100%
RPMs:       7281/7281 items
Delta RPMs: 0/0 items
Tree Files: 6/6 items
Files:      0/0 items
... completed

Importing errata...
[|]
... completed

Importing package groups/categories...
[/]
... completed

Publishing packages...
[==================================================] 100%
Packages: 7281/7281 items
... completed

Publishing distributions...
[==================================================] 100%
Distributions: 6/6 items
... completed

Generating metadata
[|]
... completed

Publishing repository over HTTPS
[\]
... completed


real    78m19.898s
user    1m44.831s
sys     0m6.317s
You have new mail in /var/spool/mail/root
[root@ec2-23-21-39-197 ~]# ps auxf | grep wsgi
root     14820  0.0  0.0 103240   828 pts/2    S+   14:03   0:00      \_ grep wsgi
apache   10013 51.9 45.9 4798968 3517180 ?     Sl   12:26  50:10  \_ (wsgi:pulp)    
You have new mail in /var/spool/mail/root
[root@ec2-23-21-39-197 ~]# pulp-admin rpm repo delete --repo-id rhel6_x86_64
The request to delete repository [rhel6_x86_64] has been received by the server.
The progress of the task can be viewed using the commands under "repo tasks"
[root@ec2-23-21-39-197 ~]# pulp-admin orphan remove --all
Request accepted

check status of task 9cb7d468-d975-44f0-8a8b-9e89c4912671 with "pulp-admin tasks
details"
[root@ec2-23-21-39-197 ~]# ps auxf | grep wsgi
root     14844  0.0  0.0 103240   828 pts/2    S+   14:07   0:00      \_ grep wsgi
apache   10013 50.7 77.5 7233204 5932784 ?     Sl   12:26  50:56  \_ (wsgi:pulp)  

# pmap -d 10013 | tail -n 1
mapped: 7233204K    writeable/private: 6155648K    shared: 1004K