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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sense of it. IT sense. And common sense.
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