[Xen-API] Trying to gather statistics by parsing the rrd data files

[Abhishek Joshi <abhishek@xxxxxxxxx>]

Hello All,

I am trying to gather xenserver statistics by parsing the xenserver rrd 
files that reside on the xen host, by retrieving them via a python 
plugin I have written.
I have a few issues I face here:

1. I see that some of the rdd files on the xenserver hosts under 
/var/xapi/blobs/rrds are substantially bigger than the others. What this 
leads to is a timeout at my end, when I encounter a big file and try to 
read it back for parsing.
2. I saw quite a few NaN values when I looked at these files.

3. I was curious to know how the xen center collected statistics, and if 
it indeed used the rrd files to parse through to collect statistics.
In any case, since the original java api is deprecated, this was the 
only way out as far as collecting stats was concerned. Please let me 
know if there is a better way to resolve this.
Any help would be highly appreciated.

Regards,

Abhishek

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