It is NOT a tutorial. Hopefully, this book is what you'll reach for when you want find out what Peter Norton or the "official" references glossed over. This manual is intended to replace the various expensive references needed to program for the DOS environment, that stack of magazines threatening to take over your work area, and those odd tables and charts you can never find when you need them. The various Microsoft and IBM publications and references don't always have the same information.
The business took off, and its founders made a lot of money and received the credit they deserved for being daring visionaries. But around the same time, Bill Gates and Paul Allen came up with an idea even stranger and more fantastical: This was much weirder than the idea of Jobs and Wozniak.
A computer at least had some sort of physical reality to it. It came in a box, you could open it up and plug it in and watch lights blink. An operating system had no tangible incarnation at all.
It arrived on a disk, of course, but the disk was, in effect, nothing more than the box that the OS came in. The product itself was a very long string of ones and zeroes that, when properly installed and coddled, gave you the ability to manipulate other very long strings of ones and zeroes.
Even those few who actually understood what a computer operating system was were apt to think of it as a fantastically arcane engineering prodigy, like a breeder reactor or a U-2 spy plane, and not something that could ever be in the parlance of high-tech "productized.
New releases of operating systems are launched as if they were Hollywood blockbusters, with celebrity endorsements, talk show appearances, and world tours.
The market for them is vast enough that people worry about whether it has been monopolized by one company.
Even the least technically-minded people in our society now have at least a hazy idea of what operating systems do; what is more, they have strong opinions about their relative merits. It is commonly understood, even by technically unsophisticated computer users, that if you have a piece of software that works on your Macintosh, and you move it over onto a Windows machine, it will not run.
That this would, in fact, be a laughable and idiotic mistake, like nailing horseshoes to the tires of a Buick.
A person who went into a coma before Microsoft was founded, and woke up now, could pick up this morning's New York Times and understand everything in it--almost: At first he had seemed like such an intelligent and interesting guy, she said, but then "he started going all PC-versus-Mac on me.
And does the operating system business have a future, or only a past? Here is my view, which is entirely subjective; but since I have spent a fair amount of time not only using, but programming, Macintoshes, Windows machines, Linux boxes and the BeOS, perhaps it is not so ill-informed as to be completely worthless.
This is a subjective essay, more review than research paper, and so it might seem unfair or biased compared to the technical reviews you can find in PC magazines. But ever since the Mac came out, our operating systems have been based on metaphors, and anything with metaphors in it is fair game as far as I'm concerned.
One of my friends' dads had an old MGB sports car rusting away in his garage. Sometimes he would actually manage to get it running and then he would take us for a spin around the block, with a memorable look of wild youthful exhiliration on his face; to his worried passengers, he was a madman, stalling and backfiring around Ames, Iowa and eating the dust of rusty Gremlins and Pintos, but in his own mind he was Dustin Hoffman tooling across the Bay Bridge with the wind in his hair.
In retrospect, this was telling me two things about people's relationship to technology. One was that romance and image go a long way towards shaping their opinions.
If you doubt it and if you have a lot of spare time on your hands just ask anyone who owns a Macintosh and who, on those grounds, imagines him- or herself to be a member of an oppressed minority group.This is the second installment of the blog series on TokuDB and PerconaFT data files.
You can find my previous post here. In this post we will discuss some common file maintenance operations and how to safely execute these operations.
Oracle acquired Sun Microsystems in , and since that time Oracle's hardware and software engineers have worked side-by-side to build fully integrated systems and optimized solutions designed to achieve performance levels that are unmatched in the industry.
Early examples include the Oracle Exadata Database Machine X, and the first Oracle Exalogic Elastic Cloud, both introduced in late . The db file parallel write wait event occurs when the process, typically DBWR, has issued multiple I/O requests in parallel to write dirty blocks from the buffer cache to disk, and is waiting for all requests to complete.
If this is a significant portion of the total wait time it is not necessarily having a large impact on on user sessions. However this combined .
Precalculus David H. Collingwood Department of Mathematics University of Washington K. David Prince Minority Science and Engineering Program College of Engineering University of Washington Matthew M.
Conroy When we ask students if they like story problems, more often than not. Five-and-a-half years ago my wife, Lolly, and I sat together at a hotel in Las Vegas, nervously composing a coming out post that would, unbeknownst to us, change our lives in nearly every way imaginable.
Hi everyone,I have a case where I am somewhat struck. The end users are complainingthat the performance is really bad. System data: ECC / Oracle We can easily see that the wait event "db file parallel write" from the 8 DBWR processes is reall.