[collectd] [PATCH] Simple sysctl plugin

[Kimo Rosenbaum]

Hi,

I started working on a sysctl plugin but never got that far. Just curious, why 
did you go with sysctlnametomib() versus sysctlbyname()?

Thanks
Kimo



----- Original Message ----
> From: Toni Ylenius <toniylenius at gmail.com>
> To: collectd at verplant.org
> Sent: Tue, May 31, 2011 2:16:18 AM
> Subject: [collectd] [PATCH] Simple sysctl plugin
> 
> Hi,
> 
> I have written a simple sysctl plugin.
> 
> Initially I wanted to  create a general sysctl plugin, but I ended up writing a 
>
> simple plugin that  reads integer values from sysctl. The plugin relies on the 

> sysctlnametomib  function (that is very similar to the sysctlnametomib) and 
> should work on  BSD like systems (Mac OS X?). I have tested the plugin only on 

> FreeBSD.
> 
> For example one can get temperature statistics  with
> <Plugin sysctl>
>     Instance  "coretemp"
>     <Entry  "dev.cpu.0.temperature">
>         Type  "fbsd_temp" # Real value = (fbsd_temp - 2732)/10.0
>          Instance "cpu-0"
>      </Entry>
>     <Entry  "dev.cpu.1.temperature">
>         Type  "fbsd_temp"
>         Instance  "cpu-1"
>     </Entry>
> </Plugin>
> 
> or ZFS  arc statistics (like the ZFS ARC plugin)
> <Plugin  sysctl>
>     Instance "zfs-arc"
>      <Entry "kstat.zfs.misc.arcstats.size">
>          Instance "arc_size"
>          Type "gauge"
>     </Entry>
>      <Entry "kstat.zfs.misc.arcstats.l2_size">
>          Instance "l2_size"
>          Type "gauge"
>     </Entry>
>     ... etc  ...
> </Plugin>
> 
> This plugin has proven useful for me and I wanted  to share it. However it 
> currently supports only integer sysctl values. A  patch in the attachment is 
> against collectd version 5.0.0.
> 
> I'm quite  new in open source contribution, so feel free to comment my code.
> 
> Toni  Ylenius
>