drew@cgfsv1.dec.com.UUCP (05/27/87)
Another easy way to speed up text, in a RAW/CON window is to simply
turn off the cursor. From my tests below you can see that you get at
least a 14 percent increase and as much as 63 percent if you are already
using BlitzFonts and no scrolling involved. That 63 percent is on top of the
speed that BlitzFonts add's.
- I was using the type(cat) command under shell.
- Scrolling was prevented by editing the file being typed and inserting a
^L after each 22nd line.
- times are in seconds.
BlitzFonts off BlitzFonts on
-------------- -------------
Scrolling No Scroll Scrolling No Scroll Cursor Mode
---------- ---------- --------- --------- -----------
16.1 8.2 11.8 6.2 ON
14.1 6.2 9.8 3.8 OFF
---- --- ---- ---
14% 32% 20% 63% (speed increase)
- The escape sequence to turn off the cursor is '<CSI>0 p'
and to turn it back on '<CSI> p'
As a friend pointed out, a couple of added lines in emacs38b to turn the
cursor off during screen updates and Blitzfonts installed and that screen
really flys!
I'm sure there are other applications that could use this info as well.
/Steve Drew:
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