Zombie Processes in hosted01

[Kevin Fenzi]

On Sun, 24 Apr 2011 18:54:03 -0300
Rafael Gomes <rafaelgomes at techfree.com.br> wrote:

> Guys,
> 
> I am taking a look in noc01 Nagios Web interface and I am seeing a
> alert with 6 hours without any comments, just a "no notification" tag.
> 
> Should we remove that check or make some change in server (hosted01)?

This would be a great one for someone to investigate more. ;) 

The problem I think is that gitweb-caching or gitweb (it's unclear
which one hosted01 is using, possibly both), is generating Zombie
processes when it finishes:

apache   10034  0.0  0.0      0     0 ?        Z    23:10   0:00 [git-cat-file] <defunct>
apache   18628  0.0  0.0      0     0 ?        Z    23:28   0:00 [git-rev-parse] <defunct>
apache   18638  0.0  0.0      0     0 ?        Z    23:28   0:00 [git-rev-parse] <defunct>
apache   20580  0.0  0.0      0     0 ?        Z    23:30   0:00 [git-ls-tree] <defunct>

So, what needs to happen here is someone needs to look and determine: 

- Are we using gitweb-caching or gitweb ? 

- Which one is causing these Z processes?

- Can we switch to the other one or fix things so there are no more
  Zombie processes?

So, I think the check is fine and valid and showing us a real problem. 
We need to investigate why it's happening and how to fix it. ;) 

kevin

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