I converted the test.txt file to test.doc and ran the tests again. Keep in mind the filesize grew by about 20%, but the text content inside remained the same.
Word 2003 and Wordpad 5.1 remained the same.
Apache Open Office Writer 3.41 slowed way down to 56.09 seconds
LibreOffice Writer 4.0 lost a little ground, 51.97 seconds.
Both MS products remained blazing fast. I expected Wordpad to slow a bit because it has to filter some of the "advanced" features of the doc format. And I also expected Word 2003 to get a bit faster, as it can forego the .TXT conversion process. But they remained the same.
Cache Test:
Here I loaded the file in each application. Exited. And loaded it right back again. Back to back operations.
It is interesting to note that the MS products make good use of the system caches. On exiting and immediate reloading the already good score was cut in half for Word 2003, now clocking 1.95 seconds. And even Wordpad 5.1 got faster, down to 4.2 seconds.
Both OpenOffice 3.4.1 Writer and LibreOffice Writer 4.0 made up some lost ground, but nothing noteworthy. AOO loaded the .doc file in 46.76 seconds and LO in 41.95. In the cases of these two free suites, the standard caching mechanisms in Windows afforded some improvement, but nothing as dramatic as MS Word's 50% reduction.
I also ran Office 2010, and across the board it took about 2 seconds longer than it's Office 2003 counterpart to load things, cache or no cache.
Memory usage: loading test.txt (3.2MB standard text file) I switched back to loading the text.txt file so I could include
MS Notepad 7MB
MS Wordpad 11MB
MS Word 15MB
Notepad++ 20MB
AAO Writer 98MB
LO Writer 131MB
IE Explorer 36MB
And the underdog of text editors MS Dos EDIT consumed about 5MB with the 3.2MB test file. It also scored a record load time 0.68 seconds for loading itself and the file.
@Hazelnut: IE loads in less than 5 seconds by itself. And Google's page comes up at the 6.31 mark. That's from the time I click on the "E" to the time I can type in the search query. That is very good. But asking it to load a mega-size text file is what slows it down. But also remember, this in on a slow machine. With a Motherboard from the late 1990's. PC-100 ram and all that. ISA sound card..
Much of the time consumed by IE is in the page rendering and not in loading libraries and getting itself ready. That part flies by as you see, from click to search it's a little over 6 seconds. A stellar performance for this old hardware.
IE is a bit of an outcast here because one does not normally edit text locally within the browser proper itself.