What happens if you take the exact SQL that web2py executes and instead execute it outside of web2py altogether (i.e., via some other database client)?
On Wednesday, February 26, 2014 7:06:46 PM UTC-5, Rene Dohmen wrote: > > 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 web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
