My OS is -O2 optimized at last

jerryleecooper · Post by **jerryleecooper** » Mon Feb 11, 2008 3:31 pm

I sucseeded, suceeded, at running flawlessly my operating system optimised with -O2 at gcc! But I cheated a bit.
syscall.c and root.c are not optimised

But the rest work.
And you, did you suceed at optimisation on your OS?

Zacariaz · Post by **Zacariaz** » Mon Feb 11, 2008 3:46 pm

This is the Announcements, Test Request, & Job openings forum and while this is an announcement i really don't think it be longs in this subforum, there isn't even a link to your project, so maybe you should consider posting simular topics in a different forum in the future?

jerryleecooper · Post by **jerryleecooper** » Mon Feb 11, 2008 3:59 pm

I think your right, probably in general programming? It was "update notices" that got me perplexed into posting into Announcement.

About my OS, it's not true, it doesb't work at all! I get pages faults it's not supposed I dont' know why.

Because I don't really want this thread to go. I will present my os.

Its codename is project DinkyToy, 32 bits for version 1.0.x
right now it's at version 0.1x.
It's fully multithreaded with a revolutionary scheduler

( more time)
has vm86
has floppy driver
will have usb support soon
it's the windows vista of the text based OSes!
has bidirectionnal textsupport
no site right now because I dont have a site
no screenshot

I dont plan to release it opensource because a little closedsource operating system that is the windows vista of the textbased OSes is interresting!

Zacariaz · Post by **Zacariaz** » Mon Feb 11, 2008 4:21 pm

jerryleecooper wrote:it's the windows vista of the text based OSes!

I look forward to see some screenies then. If i ever oull my slef to make somthing worth while this is the direction i will probably go.

1234 · Post by **1234** » Mon Feb 11, 2008 4:24 pm

[post deleted]

pcmattman · Post by **pcmattman** » Mon Feb 11, 2008 10:45 pm

I always try to compile with -O2, sometimes even -O3 (in some files, such as string handling or memory utilites - memcpy et al).

os64dev · Post by **os64dev** » Tue Feb 12, 2008 12:27 am

moved upon request to 'General Programming'

bluecode · Post by **bluecode** » Tue Feb 12, 2008 1:13 am

pcmattman wrote:I always try to compile with -O2, sometimes even -O3 (in some files, such as string handling or memory utilites - memcpy et al).

I occasionally do it (but for the whole os), because it is a good indicator for wrong code. It happened a few times to myself that one of the -O versions was broken.

btw. jerryleecooper, you might want to read Demystifying the restrict keyword (and perhaps Understanding strict aliasing) if you are interested in optimization.

earlz · Post by **earlz** » Sat Feb 16, 2008 12:34 am

I had some sort of problem in my JouleOS code... it worked on -O3 but not on -O2 or -O1... it made no sense...