[rrd-users] Re: Question about concurent access of RRD database?

[Mark Smith]

Let me ask a slightly different question:

Does RRDTool perform file locking?  If I have two processes trying to 
work on the same file, does it handle it gracefully?

-Mark

Alex van den Bogaerdt wrote:

> Mohacsi Janos wrote:
> 
>> Hi,
>> 	What happens if 2 process is updating in the same time the same
>> RRD database (of course different variable)?
> 
> 
> You need to read more about RRDtool.  "Of course different variable"
> tells that you don't understand how RRDtool works.
> 
> An RRD is updated for all DSes (variables) at the same time. No
> exceptions.  If you don't specify a value for a certain DS, the
> unknown value is used.
> 
> To answer your question: It is not possible.
> 
> HTH


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