Hi Web2py-Users, We have an app which imports data form a .csv file into a sqlite table. The CSV has 70k lines. Once a week we re-import data with a new .csv.
The controller that handles this job: 1) handles the upload and moves it to location for future reference 2) truncates the main table and 2 subtables (with linked data, main table has a auth.signature) 3) imports the .csv and use the info in the data to refill the other 2 tables. Before our update from 2.4.6 to 2.8.2 it was very fast. Max 10-15 seconds, for steps 1-3. After the update (still not 100% sure if the update to 2.8 caused it; because we did add other functionality also and updated web2py itself); we had performance issues; The import suddenly needed somewhere between 15m and 1 hour. After a lot of debugging we isolated the problem to the truncate part of the steps. The truncate of 68000 records took 2040 seconds (with a delete form appadmin: 3 seconds for 100 records). We tried it from appadmin also, tried execute_sql; but they all had the same issue. As a workaround we now drop the table from sqlite (via sqlite3 and a os.system call), delete the *tablename.table file from the databases/ folder and then import the data again. But a more web2py-ish solution would be welcome. ;) Any suggestions in what could cause the problem are more then welcome. Kind Regards Rene -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
