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Poor Worksheet Performance
MD,
First thing I'd do is clear out the Windows/Temp directory. If that doesn't do the trick, take a look here for more info: http://www.mvps.org/dmcritchie/excel/slowresp.htm John MD wrote: All, I have a fairly large workbook containing about a dozen worksheets. There are some fairly complex formulas including cross-worksheet references. A single macro loops x number of times, changing fields and re-calculating all formulas. I have tested this spreadsheet on 9 different PCs and on two of them the performance is 30 times faster than the other seven (i.e one macro execution of the "Calculate" command takes about 1 second on the two speedy machines versus about 30 seconds on other seven). The PCs are all dramatically different: Intel vs. AMD, different levels of memory ranging from 128MB to 1GB, different video cards, same versions of Excel (2000), Windows 2000 with SP3, etc. I can't find a common denominator in the two machines that process it quickly. One of the machines is an home-made AMD 1.3 Ghz processor with 500MB RAM and standard 7200RPM IDE disk. The other is an Dell Dimension 4400 with 256MB RAM. Among the slower processing machines a (1) a brand new AMD Athlon XP2100+ with 512MB of DDR RM (2) a brand new Sony VAIO GRS700K Notebook with 512MB RAM and a 1.8 Ghz processor. (3) a Dell PowerEdge 1400 server with dual 800 mhz processors and 500MB RAM. It doesn't seem like a matter of horsepower, specifically. Does anyone know of any tools available for identifying performance bottlenecks in Excel spreadsheets? Any other ideas on what might be causing this dramatic performance difference? Thanks for any help you can provide. Mark D'Agosta |
Poor Worksheet Performance
Do you have hyper-threading switched on/off ?
"MD" wrote in message et... All, I have a fairly large workbook containing about a dozen worksheets. There are some fairly complex formulas including cross-worksheet references. A single macro loops x number of times, changing fields and re-calculating all formulas. I have tested this spreadsheet on 9 different PCs and on two of them the performance is 30 times faster than the other seven (i.e one macro execution of the "Calculate" command takes about 1 second on the two speedy machines versus about 30 seconds on other seven). The PCs are all dramatically different: Intel vs. AMD, different levels of memory ranging from 128MB to 1GB, different video cards, same versions of Excel (2000), Windows 2000 with SP3, etc. I can't find a common denominator in the two machines that process it quickly. One of the machines is an home-made AMD 1.3 Ghz processor with 500MB RAM and standard 7200RPM IDE disk. The other is an Dell Dimension 4400 with 256MB RAM. Among the slower processing machines a (1) a brand new AMD Athlon XP2100+ with 512MB of DDR RM (2) a brand new Sony VAIO GRS700K Notebook with 512MB RAM and a 1.8 Ghz processor. (3) a Dell PowerEdge 1400 server with dual 800 mhz processors and 500MB RAM. It doesn't seem like a matter of horsepower, specifically. Does anyone know of any tools available for identifying performance bottlenecks in Excel spreadsheets? Any other ideas on what might be causing this dramatic performance difference? Thanks for any help you can provide. Mark D'Agosta |
Poor Worksheet Performance
As far as I'm aware, hyper-threading is not available on any of the machines
that I tested with. Thanks, MD "Jessie" wrote in message ... Do you have hyper-threading switched on/off ? "MD" wrote in message et... All, I have a fairly large workbook containing about a dozen worksheets. There are some fairly complex formulas including cross-worksheet references. A single macro loops x number of times, changing fields and re-calculating all formulas. I have tested this spreadsheet on 9 different PCs and on two of them the performance is 30 times faster than the other seven (i.e one macro execution of the "Calculate" command takes about 1 second on the two speedy machines versus about 30 seconds on other seven). The PCs are all dramatically different: Intel vs. AMD, different levels of memory ranging from 128MB to 1GB, different video cards, same versions of Excel (2000), Windows 2000 with SP3, etc. I can't find a common denominator in the two machines that process it quickly. One of the machines is an home-made AMD 1.3 Ghz processor with 500MB RAM and standard 7200RPM IDE disk. The other is an Dell Dimension 4400 with 256MB RAM. Among the slower processing machines a (1) a brand new AMD Athlon XP2100+ with 512MB of DDR RM (2) a brand new Sony VAIO GRS700K Notebook with 512MB RAM and a 1.8 Ghz processor. (3) a Dell PowerEdge 1400 server with dual 800 mhz processors and 500MB RAM. It doesn't seem like a matter of horsepower, specifically. Does anyone know of any tools available for identifying performance bottlenecks in Excel spreadsheets? Any other ideas on what might be causing this dramatic performance difference? Thanks for any help you can provide. Mark D'Agosta |
Poor Worksheet Performance
MD,
Did you try that site that I pointed you to in my first response? http://www.mvps.org/dmcritchie/excel/slowresp.htm any tools available for identifying performance bottlenecks in Excel "Fast Excel" is one that I know of. It isn't free but there's a lot of other free information on the site for optimizing Excel. It's probably not going to help with discovering the processing time differences between the PC's but may offer some insight in how to speed things up overall. http://www.decisionmodels.com/ John MD wrote: As far as I'm aware, hyper-threading is not available on any of the machines that I tested with. Thanks, MD "Jessie" wrote in message ... Do you have hyper-threading switched on/off ? "MD" wrote in message et... All, I have a fairly large workbook containing about a dozen worksheets. There are some fairly complex formulas including cross-worksheet references. A single macro loops x number of times, changing fields and re-calculating all formulas. I have tested this spreadsheet on 9 different PCs and on two of them the performance is 30 times faster than the other seven (i.e one macro execution of the "Calculate" command takes about 1 second on the two speedy machines versus about 30 seconds on other seven). The PCs are all dramatically different: Intel vs. AMD, different levels of memory ranging from 128MB to 1GB, different video cards, same versions of Excel (2000), Windows 2000 with SP3, etc. I can't find a common denominator in the two machines that process it quickly. One of the machines is an home-made AMD 1.3 Ghz processor with 500MB RAM and standard 7200RPM IDE disk. The other is an Dell Dimension 4400 with 256MB RAM. Among the slower processing machines a (1) a brand new AMD Athlon XP2100+ with 512MB of DDR RM (2) a brand new Sony VAIO GRS700K Notebook with 512MB RAM and a 1.8 Ghz processor. (3) a Dell PowerEdge 1400 server with dual 800 mhz processors and 500MB RAM. It doesn't seem like a matter of horsepower, specifically. Does anyone know of any tools available for identifying performance bottlenecks in Excel spreadsheets? Any other ideas on what might be causing this dramatic performance difference? Thanks for any help you can provide. Mark D'Agosta |
Poor Worksheet Performance
Yes, I did try many of the tips suggested on that site, but none of them
provided any significant performance improvement. What really has me baffled is that the spreadsheet, without any performance enhancements, runs in a fraction of the time on two out of nine machines. It's not just horsepower because one of the speedy machines has a significantly slower processor, less memory, standard IDE disk, etc. That leads me to believe that it's some type of hardware configuration or setting. Or maybe a specific brand/type of memory. Very frustrating... Thanks again for your help, John. MD "John Wilson" wrote in message ... MD, Did you try that site that I pointed you to in my first response? http://www.mvps.org/dmcritchie/excel/slowresp.htm any tools available for identifying performance bottlenecks in Excel "Fast Excel" is one that I know of. It isn't free but there's a lot of other free information on the site for optimizing Excel. It's probably not going to help with discovering the processing time differences between the PC's but may offer some insight in how to speed things up overall. http://www.decisionmodels.com/ John MD wrote: As far as I'm aware, hyper-threading is not available on any of the machines that I tested with. Thanks, MD "Jessie" wrote in message ... Do you have hyper-threading switched on/off ? "MD" wrote in message et... All, I have a fairly large workbook containing about a dozen worksheets. There are some fairly complex formulas including cross-worksheet references. A single macro loops x number of times, changing fields and re-calculating all formulas. I have tested this spreadsheet on 9 different PCs and on two of them the performance is 30 times faster than the other seven (i.e one macro execution of the "Calculate" command takes about 1 second on the two speedy machines versus about 30 seconds on other seven). The PCs are all dramatically different: Intel vs. AMD, different levels of memory ranging from 128MB to 1GB, different video cards, same versions of Excel (2000), Windows 2000 with SP3, etc. I can't find a common denominator in the two machines that process it quickly. One of the machines is an home-made AMD 1.3 Ghz processor with 500MB RAM and standard 7200RPM IDE disk. The other is an Dell Dimension 4400 with 256MB RAM. Among the slower processing machines a (1) a brand new AMD Athlon XP2100+ with 512MB of DDR RM (2) a brand new Sony VAIO GRS700K Notebook with 512MB RAM and a 1.8 Ghz processor. (3) a Dell PowerEdge 1400 server with dual 800 mhz processors and 500MB RAM. It doesn't seem like a matter of horsepower, specifically. Does anyone know of any tools available for identifying performance bottlenecks in Excel spreadsheets? Any other ideas on what might be causing this dramatic performance difference? Thanks for any help you can provide. Mark D'Agosta |
Poor Worksheet Performance
John,
Some good news. I bought the DecisionModels "Fast Excel" product and, in about 30 minutes, I had identified and corrected the performance bottleneck. HOWEVER, this still does not solve my original problem of why two machines are not affected by this bottleneck, but at least I got the thing running well on the rest of the machines and that was the main objective. Your suggestion got me past the immediate crisis and now I can take my time researching the problem of why the problem does not occur on certain machines. Thanks a million, Mark "John Wilson" wrote in message ... MD, Did you try that site that I pointed you to in my first response? http://www.mvps.org/dmcritchie/excel/slowresp.htm any tools available for identifying performance bottlenecks in Excel "Fast Excel" is one that I know of. It isn't free but there's a lot of other free information on the site for optimizing Excel. It's probably not going to help with discovering the processing time differences between the PC's but may offer some insight in how to speed things up overall. http://www.decisionmodels.com/ John |
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