Issue #1702 has been updated by ohookins.

My SELinux knowledge is pretty poor, but couldn't puppet wait until the end of 
the run and then execute restorecon over any paths that may need context fixing?
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Bug #1702: SELinux code inefficiently makes syscalls to stat and matchpathcon
http://projects.reductivelabs.com/issues/show/1702

Author: ohookins
Status: Accepted
Priority: Normal
Assigned to: seanmil
Category: file
Target version: 0.24.7
Complexity: Unknown
Affected version: 0.24.6
Keywords: 


<pre>
debug: /File[/var/lib/puppet/clientbucket]/seluser: Executing 
'/usr/sbin/matchpathcon /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/seluser: Found seluser default 
'system_u' for /var/lib/puppet/clientbucket
debug: /File[/var/lib/puppet/clientbucket]/selrole: Executing 
'/usr/sbin/matchpathcon /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/selrole: Found selrole default 
'object_r' for /var/lib/puppet/clientbucket
debug: /File[/var/lib/puppet/clientbucket]/seltype: Executing 
'/usr/sbin/matchpathcon /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/seltype: Found seltype default 
'var_lib_t' for /var/lib/puppet/clientbucket
debug: /File[/var/lib/puppet/clientbucket]/selrange: Executing 
'/usr/sbin/matchpathcon /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/selrange: Found selrange default '' 
for /var/lib/puppet/clientbucket
debug: /File[/var/lib/puppet/clientbucket]/seluser: Executing '/usr/bin/stat -c 
%C /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/selrole: Executing '/usr/bin/stat -c 
%C /var/lib/puppet/clientbucket'
debug: /File[/var/lib/puppet/clientbucket]/seltype: Executing '/usr/bin/stat -c 
%C /var/lib/puppet/clientbucket'
</pre>

The SELinux user, role and type is outputted from one invocation of either stat 
or matchpathcon:
<pre>
[EMAIL PROTECTED] ~]# /usr/bin/stat -c %C /var/lib/puppet/clientbucket
system_u:object_r:var_lib_t
[EMAIL PROTECTED] ~]# /usr/sbin/matchpathcon /var/lib/puppet/clientbucket
/var/lib/puppet/clientbucket    system_u:object_r:var_lib_t
</pre>

When the number of files that puppet has to touch grows significantly, the 
amount of syscalls it is making on behalf of SELinux operations is growing a 
lot more (albeit, only linearly). These are only two examples but I think given 
the number of larger installations it is wise to think about the performance 
impact of running Puppet. I have noticed a significant increase in load on my 
clients after upgrading to 0.24.6 which has a lot more SELinux support.


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