sudo sysctl -w kern.sysv.shmmax=33554432

and to see other shared mem related kernel variables:

sysctl -A|grep shm

If you’d like these settings to remain after you reboot your machine follow the instruction here.

The other problem you’re likely to hit is that shared memory persists between processes (as it probably should) unless you detach and then destroy the QSharedMemory object. This makes testing somewhat inconvenient. You can monitor and remove shared segments with ipcs and ipcrm commands. The first command lists shared segments, the second deletes them.

Again, I’ve only verified this on Mac OS X 10.5, but it should work on other Unix-like systems that support System V IPC.

Clearly this is a positive review, but the reviewer only assigned one star! So the rating paradigm is not as clear or intuitive as I would have though.

It’s a mystery.

Physical strength is the most important thing in life. This is true whether we want it to be or not. As humanity has developed throughout history, physical strength has become less critical to our daily existence, but no less important to our lives. Our strength, more than any other thing we possess, still determines the quality and the quantity of our time here in these bodies. Whereas previously our physical strength determined how much food we ate and how warm and dry we stayed, it now merely determines how well we function in these new surroundings we have crafted for ourselves as our culture has accumulated. But we are still animals - our physical existence is, in the final analysis, the only one that actually matters. A weak man is not as happy as that same man would be if he were strong. This reality is offensive to some people who would like the intellectual or spiritual to take precedence. It is instructive to see what happens to these very people as their squat strength goes up.

As the nature of our culture has changed, our relationship with physical activity has changed along with it. We previously were physically strong as a function of our continued existence in a simple physical world. We were adapted to this existence well, since we had no other choice. Those whose strength was adequate to the task of staying alive continued doing so. This shaped our basic physiology, and that of all our vertebrate associates on the bushy little tree of life. It remains with us today. The relatively recent innovation known as the Division of Labor is not so remote that our genetic composition has had time to adapt again. Since most of us now have been freed from the necessity of personally obtaining our subsistence, physical activity is regarded as optional. Indeed it is, from the standpoint of immediate necessity, but the reality of millions of years of adaptation to a ruggedly physical existence will not just go away because desks were invented.

Like it or not, we remain the possessors of potentially strong muscle, bone, sinew, and nerve, and these hard-won commodities demand our attention. They were too long in the making to just be ignored, and we do so at our peril. They are the very components of our existence, the quality of which now depends on our conscious, directed effort at giving them the stimulus they need to stay in the condition that is normal to them. Exercise is that stimulus.

Over and above any considerations of performance for sports, exercise is the stimulus that returns our bodies to the conditions for which they were designed. Humans are not physically normal in the absence of hard physical effort. Exercise is not a thing we do to fix a problem - it is a thing we must do anyway, a thing without which there will always be problems. Exercise is the thing we must do to replicate the conditions under which our physiology was — and still is - adapted, the conditions under which we are physically normal. In other words, exercise is substitute cave-man activity, the thing we need to make our bodies, and in fact our minds, normal in the 21 st century. And merely normal, for most worthwhile humans, is not good enough.

An athlete’s decision to begin a strength training program may be motivated by a desire to join a team sport that requires it, or it might be for more personal reasons. Many individuals feel that their strength is inadequate, or could be improved beyond what it is, without the carrot of team membership. It is for those people that find themselves in this position that this book is intended.

The essential principle, that humans have been designed (through evolution) to be an active mobile species, has guided my life for the last few years. I’ve been fighting my natural laziness in order to create something resembling a physical routine, and I’m slowly succeeding. My next step is to go for daily runs. So far I’ve done it twice this week, which is not daily, but still acceptable. I had to nerd it out a bit, of course, so here’s an InstaMapper of my run. I meant to go for 30 minutes, but only went for 26. Average speed was 7km, but it probably was a little bit higher because I stopped in the middle to stretch. Anyway, there you have. Run for your health.

GPS tracking powered by InstaMapper.com

appsales-mobile is an open source iphone app that provides a nice set of functionality right on your iphone. I’ve gotten into a routine of checking my sales every morning when I wake up. It’s quite convenient. If you have a developer license, grab the code, compile and stick it on your phone. Pretty incredible that it’s free and open
source.

ideaswam’s appviz is a standalone mac app that’s unfortunately not free. It does have a little more functionality though. It lets you downlaod reviews from all of the localized appstores (apparently, reviews aren’t global). $29.95 for a full copy, the trial is limited for a month. Pretty decent app as well. After using it for 3 weeks, I’m strongly considering purchasing it.