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 table download performance depending vs network
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lalbatros
Yak Posting Veteran

69 Posts

Posted - 04/10/2010 :  16:54:06  Show Profile  Reply with Quote
Hello,

I am using AdoDb/sqloledb in read-only to download a table of about 30k records from an sql server database.

At work the network is excellent (10 Mbps up, 10 Mbps down) and the download takes 4 seconds. (network tested on speedtest.net)

At home, my connexion is not so bad in download (0.4 Mbps up, 3.0 Mbps down). Yet, the download of the table takes more than 80 seconds. I would have expected 12 seconds based on the network tests.

Do you think there is room to improve somehow the download performance when I am at home?
Or is there something wrong in my test?
If there is some hope from improvement, what would you suggest?

Thanks,

Michel


PS:
===
I do this download to an Excel 2003 sheet.
Using the Excel queries, is much slower, 50 seconds at work.
I tested already different options without results.
For example, I used the "CopyFromRecordset" method without changibg the performance as compared to a record-by-record VBA code.
I also modified the cachesize property of the recorset object without improvements.
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