[snmp__if_combined] Add support for stacked series in root graph

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From a summary comment in the code:

    If a stacked graph is requested, plot the total. Rather than
    aggregating them with CDEFs of SUMs, we sum them in the script, which
    allows us to create real series than can be easily borrowed by other
    loaning graphs.

Those series are recv_bits and send_bits.

There are longstanding bugs with them (dating back to snmp__if). This
has been documented, as well as some potential ad hoc fixes for the
data.

Some outdated bug were also removed from the doc.

Signed-off-by: Olivier Mehani <shtrom@ssji.net>

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This commit is contained in:

Olivier Mehani 2021-06-04 14:41:31 +10:00

parent 61473dfdb0

commit 6ac458ace1

3 changed files with 151 additions and 35 deletions

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