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excel 2010 slow performance

Posted on 2014-01-20
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Last Modified: 2016-11-23
Hi,
I have a core i5 PC dell e6420 latitude. 4Gb ram
excel is fine, but there is one excel file which seems to get hung on lookup formula when dragged to all 33000 rows. the lookup data is in the same workbook.
I use 32 bit version of Ms office on a win 7 x64 bit OS.
the file size is 8MB but it consists of various other columns which has formulas.
the row size is 33000 with 8 formula based columns.
Excel 2010.


Any suggestions to try for eliminating this excel freeze.
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Question by:kerry_dsouza
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by:BigPapaGotti
ID: 39794069
Are you trying to drag this formula to all of the other rows? If so, have you tried only dragging to a few hundred rows to see if it is any better? Also how long do you wait until forcing Excel to close? I'm guessing with that large of a file, that many calculations and that many rows it may still be calculating the data and copying the formula to the other cells.
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helpfinder earned 500 total points
ID: 39794114
you can check if the number of formulas is a show stopper. Make a copy of that excel (I do no recommend to test anything in production and maybe the only one version of the file). Select all cells in the sheet and make copy (ctrl+C) and paste special>values (do this for all sheets). This makes all formulas disappear. Now do your calculation as you need and check if the performance is better - if so them probably number or complexity of formula(s) was a problem, if the speed issue persists you know it has nothing to do woth included formulas
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by:Zack Barresse
ID: 39815961
Hi there,

33k formulas isn't huge, but really it depends on what you're telling Excel to calculate. Not all formulas are created equal, and not all lookup functions are written efficiently. With all lookup formulas, the range you're looking at to find the value (you're searching for) is always best to have sorted. Another difference is whether you're looking for an exact or approximate match, although this depends on what type of lookup function you're using.

Take a look at Charles Williams website (creator of Fast Excel) for some good optimization tips:
http://decisionmodels.com/optspeed.htm

I'm afraid if you need anything else you'll have to be more specific about what you have, or even post a sample workbook.

HTH

Regards,
Zack Barresse
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Expert Comment

by:Scott Thomson
ID: 39887759
There is most likely no one who can solve this off the bat and i think we need a few more details.

1. have you looked at task manager to see what sort of processor/ram is being used during this lookup function?
2. Has this always been the case as soon as the function was created for this file or has it gradually gotten worse? or did it just one day turn into a slow dog?
3. Are you able to test the file on another machine of equal/better/worse performance to see if its simply the function going through the motions compared to the actual power of the machine.?
4. Are you using any kind of kvirus scanner on the machine? does it change when you disable it.?

If you can answer the results of these questions we can possibly help you frther
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