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List:       rrd-developers
Subject:    [rrd-developers] Understanding HW
From:       kissg () ssg ! ki ! iif ! hu (Kiss Gabor (Bitman))
Date:       2007-02-19 10:09:24
Message-ID: Pine.LNX.4.64.0702191046400.8124 () bakacsin ! ki ! iif ! hu
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Dear folks,

I try to study deep details of Holt-Winters related code.

In rrd_crate.c (1.2.15) I found that "seasonal period" and "rows" parameters
of DEVSEASONAL, SEASONAL and FAILURES RRAs are simply ignored.
These values are always overridden by "seasonal period" of HWPREDICT.

See lines like
	current_rra -> row_cnt = period;
in create_hw_contingent_rras().

Is this true or did I miss something?

Gabor


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