Changes between Version 4 and Version 5 of TimeBasedDB


Ignore:
Timestamp:
10/30/14 13:09:52 (11 years ago)
Author:
dneise
Comment:

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  • TimeBasedDB

    v4 v5  
    144144    * 'GPS_CONTROL_NEMA', # omitted, because of column name 'Time' and 'time', maybe my mysql installation is case insensitive .. :-| stupid me.
    145145
     146
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     148= First experiences with slow data insertion =
     149
     150In about 8h I only managed to insert 262MB of data. While neither the python process, that was reading the data, nor the mysqld, that was writing the data comsumed 100% CPU load at any time. Not sure why this is the case?
     151Mybe the stuff was io blocked.
     152
     153--> python script is 40...500 times faster when not inserting the data into the DB, but just reading... so input side is not io blocked.
     154
     155apparently one can improve the situation a bit by using bulk inserta, but one must also stay below the maximum paket size