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Message #32557
[Bug 798732] Re: hr_timesheet_sheet: Timesheets big performance issues
** Changed in: openobject-addons
Status: Confirmed => In Progress
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https://bugs.launchpad.net/bugs/798732
Title:
hr_timesheet_sheet: Timesheets big performance issues
Status in OpenERP Addons (modules):
In Progress
Bug description:
Hello,
We are experiencing major problems of performance on timesheets.
OpenERP 6.0.2
Performance issues occur with the module hr_timesheet_sheet.
We have ~ lines per tables :
- hr_timesheet_sheet : 7'500
- hr_analytic_timesheet : 110'000
- hr_attendance : 110'000
Opening the "Timesheets" menu takes a few minutes for the 80 first rows.
Then open the timesheet form view takes nearly 30 seconds.
Each action on a timesheet (Sign-in/out, fill a timesheet line, ..) takes nearly 30 seconds again.
It's clear that the main cause of the problem is : hr_timesheet.sheet.day
This view computes the indicators for the whole tables and only afterwards we get the rows that we need.
The second cause of the problem is the fields sheet_id in
hr.attendance and hr.analytic.timesheet which are function fields.
The function fields total_attendance_day, total_timesheet_day,
total_difference_day, total_attendance, total_timesheet,
total_difference of hr_timesheet_sheet.sheet are based on this view,
so that's why each action on the timesheet take 30 seconds, because
the view is computed again and again.
Here is the actions that I found to bring an acceptable situation:
- Removed the "By Day" page on the timesheet view, instead I added a link which open a new view (this will still be slow but it can be acceptable as a first solution as you decide to open it...).
- I replaced the methods to compute the hr_timesheet_sheet.sheet function fields by full python instead of a cr.execute() on the view.
- There is still a bottleneck, on a search of sheet_id in hr.attendance and hr.analytic.timesheet, it executes each time a sql query. I added store=True to the function field. The only issue I see with that is in the case of a modification of the employee_id of the timesheet, we can add a trigger on this modification, but I don't see how we can search lines to update. What are your thoughts ? (Is it useful to change the employee of a timesheet after its creation, can we block this ?)
This improves a lot the performances, but there is still a lot of room
to improve them !
Maybe we have to replace this function fields / one2many_mod with
one2many fields ?
Here is the link to my branch (I propose a merge.)
https://code.launchpad.net/~gbaconnier-c2c/openobject-addons/6.0-hr_timesheet_sheet-performance-improvements
Thanks
Guewen
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References