Working with files in working memory

Johan:

In EViews 9, we changed our code to use a buffered file reader class when opening and saving a workfile. The new class gave us significant improvement over our previous file reader. By default, this is turned on so you should already be using it.

For experimentation, we created an undocumented command named: USEFILEBUFFER.

To turn it on (i.e. use new buffered file reader), simply type in:

Code:
USEFILEBUFFER

You should see a response message in the status bar at the bottom of the main window.

To turn it off (and use our old file reader), type in:

Code:
USEFILEBUFFER(FALSE)

then try opening and saving the same workfile. Turning this setting off is only valid for the current instance of EViews. Once you restart, it gets reset back to ON.

Try playing with these settings and let me know if you see the expected difference in performance for both read and write.

Also, can you perform a test with a Windows file share to see if that changes the timings?

Steve

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