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28 Aug 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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28 Aug 2019, Stefan Ritt, Forum, History plot problems for frontend with multiple indicies
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28 Aug 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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28 Aug 2019, lcp, Forum, History plot problems for frontend with multiple indicies
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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29 Aug 2019, Ben Smith, Forum, History plot problems for frontend with multiple indicies
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01 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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16 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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17 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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18 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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27 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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24 Aug 2020, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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Message ID: 1692
Entry time: 16 Sep 2019
In reply to: 1672
Reply to this: 1693
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Author: |
Konstantin Olchanski |
Topic: |
Forum |
Subject: |
History plot problems for frontend with multiple indicies |
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> thanks for your reply. I can confirm that your suggested workaround does indeed
> make the problem dissapear.
> I guess this issue hasn't been seen at T2K since we use MYSQL for the history.
I think you found the source of the problem, confused event id assignments. To confirm,
can you email me (or post here) the output of odbedit "ls -l /History/Events".
If that's the problem, you can avoid it completely by switching to a history storage method
that does not rely on magic mapping between equipment names and numeric event id's:
try the "FILE" method (set odb /Logger/History/FILE/Active to "y", restart the logger) or
the "MYSQL" method (you will need to setup a mysql database). You tell mhttpd and mhist which
history data to read by setting ODB /History/LoggerHistoryChannel to one of the channel names
from /logger/history/, restart mhttpd. (mhttpd and mhist used to print a message "reading history
data from channel XXX", but somebody removed this message).
K.O. |