Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Which has a lower processing overhead?

Which has a lower processing overhead?

Which has a lower processing overhead?

I am writing a program process data from an analogue capture card and am going to push the data into excel. There are two way I know of achieving this -
  Directly by setting object references to excel and putting the data into the cells.
  Using ADO with excell as the DB.
Which one of these has the lower processing overhead in the parent application/thread.

Many thanks


RE: Which has a lower processing overhead?

writing (and reading) data directly into excel cells is in my experience orribly slow, no direct experience with ado interface and excel. Consider writing data in text file and the import with excel (this is fast).

have a good luck

RE: Which has a lower processing overhead?

I am supporting both txt & xls storage formats & bench marking to determine the maximum sample rate. FYI: to write 18 doubles to excel with .EnableCalculation = False & .ScreenUpdating = False takes 15ms on a P4 2000, 26ms on a AMD XP1700+ & 120ms on a PII 500 and thats with out sampling & number bashing. it's also unfortunate as the the target m/c is the PII as it is currently unused. On the bright side the logging requires a slow rate (currently done manually every 10 mins).

Many thanks


RE: Which has a lower processing overhead?

I have just run the same test with timers on txt files & result is as follows on AMD1700+ 18 doubles every 0.036768ms writing to an open file. Opening, writing & closing comes out @ 2.5958ms for the same 18 doubles



Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close