Hi Markus,
I definitely can, anecdotal evidence suggests to me that this issue does not
occur on postgres (I use rrdtool+postgres similarly and havne't seen the
issue), but I'll make some actual tests and report back.
-Adam
On Jul 9, 2011, at 8:39 AM, markus.hoeni...@mhoenicka.de wrote:
> Adam Jacob Muller writes:
>> Hi,
>> I'm developing an application that utilizes rrdtool (and the lidbdi
>> interface into rrdtool) heavily and having some performance issues that seem
>> to center around libdbi,
>>
>
> Hi Adam,
>
> I can't see any obvious issues with your C code, so I assume the speed
> differences really stem from libdbi, one way or another. Unfortunately
> I currently lack the time for any deeper analysis, but I'm somewhat
> surprised about your results. libdbi has originally been developed as
> a wrapper for MySQL and PostgreSQL and should work fairly well with
> these database engines (other engines are a *lot* harder to fit). The
> only overhead that the mysql driver contains is the column type
> analysis and data conversion stuff. Some other engines have to buffer
> the data and thus create way more overhead.
>
> Did you have a chance to verify your results with any of the other
> database drivers?
>
> regards,
> Markus
>
> --
> Markus Hoenicka
> http://www.mhoenicka.de
> AQ score 38
>
> --
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threats, fraudulent activity, and more. Splunk takes this data and makes
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2d-c2
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