Re: Speeding up XCode?
Re: Speeding up XCode?
- Subject: Re: Speeding up XCode?
- From: Robert Dell <email@hidden>
- Date: Fri, 21 Oct 2005 18:11:11 -0400
George Warner wrote:
on 10/21/05 3:19 AM, Robert Dell at <email@hidden> wrote:
George Warner wrote:
On Tue, 18 Oct 2005 22:26:41 -0400, Robert Dell <email@hidden> wrote:
If you want to understand a computer, build one from scratch. I don't mean
to buy the components at a computer fair and then a box with power supply
and then slap them together and call it "i built it myself". build
computers the way i've built them. buy the components from an IC
manufacturer, hard code the machine code, program the chips, design the
board and have a board maker make the board (my skills aren't good enough to
etch complex board patterns), solder in the parts and then test/run the
computer you've made.
The scariest part of all this is that your last name is Dell! ;-)
do I make fun of your name? I may poke fun at people's programming techniques
but never some person's name, that's too personal and you don't know me that
well. if you DID know me, you'd find much more things about me than my name
to poke fun at.
If you were offended by my comments I most humbly apologize. I hope you can
understand the irony of someone named Dell talking about building their own
computer from as near to scratch as possible. May I be both impressed and
amused? ;-) Once upon a time I could have built a system from scratch but
not anymore; Not with surface mount components & ball-grid sockets and > 1.0
GHz traces on the motherboard, etc. The last system I boot strapped from
solder was a 20 MHz Z280 and that was over 20 years ago. These days I'd
rather just go down to Fry's and boot strap an OS from the BIOS up. Hardware
is just too hard for me these days. ;-)
looks like we're both in the same boat but i think i have an advantage, i can calculate standing waves of signals and route traces to avoid most problems you've described. The BGA problem is a serious one from my standpoint as well.
What does SHARK say? ;-)
Shark says it can't find anything to monitor at all.
Before you take offense again I'm asking in all seriousness: "Did you press
the 'start' button?". Did you attach to your running process or did you
select "Launch using performance tool: SHARK" from Xcode's "Debug" menu?
FYI: There are also API's that you can use to turn SHARK profiling on/off
directly from your code. So if you have a specific routine that you want
performance info on you can focus SHARK's sampling.
What happened is i had it sampling my code real well once and once i split it to development/deployment, shark no longer was able to see anything in my code at all. I went back to the backup of the old project and it still wasn't able to see anything even though i did the exact same thing as i did before. one point to note, the main program for which my program is simply a cocoa plugin was under development by somebody else and maybe he changed something that made shark not work on the plugin.
shark 4.1.1, function trace, process, process running called avalon, click start. get dialog box saying there are no functions selected for profiling.
time profile, it does nothing at all except pretend it's doing something and then display nothing and shows start again. VM faults, the same thing.
the bottom line is Shark is too buggy to use, it does nothing anymore.
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