A reschedule does not happen only on the timer tick (100 or 1000 times a second depending on HZ setting), it happens on a number of occasions, timer tick being one of them. The other ones remove the concerns zenyu seems to be having:
when a process sleeps - when a process calls the kernel in order to sleep, the kernel reschedules because sleeping can be handled using normal timer and in the meantime other processes may work
when a process yields - when a process says that it's done its stuff in this tick, whatever that means
when idle, on any interrupt - when no process wants to work, the first one that wants to work is scheduled right away
The second point may seem a little weird, but a process can only become willing to do something as a result of some interrupt - a timer if the process was sleeping for a given amount of time; a i/o interrupt if the process handles the keyboard or the mouse. In any case, interrupts are handled by the kernel and so if a process is to wake up from its sleep or if a process gets something in some stream on which it is waiting (stdin on keyboard interrupt, socket on network card interrupt etc.), that process is just scheduled to wake up and work.
So on an idle machine the HZ does not really have much impact, and on a utilized machine the smoothness of process interaction (like window manager vs. X server) increases with increased HZ but this also increases the overhead.
Maybe the threat of having the Chinese sweep away all physical proof of the lunar moon landings (to promote the absurd myth that the landings were somehow fake... as if they had modern special effects back in 1969) will be enough to at least send someone up to secure that historical site.:-)
Yeah, to install the necessary physical proof of the lunar moon landings. 8-)
It is clear that subliminal messages won't help you learn anything because as is widely known subliminal messages don't work. That's just as good because they cannot be used by the evil companies to force on us the belief that UNIX is better than Windows.
While right now I cannot give you a pointer to any of the many scientific studies that prove subliminal messages don't work, I know they don't, and my knowledge is reinforced every now and then, especially while browsing the web.
we get used to the new additions to the noises of life,
we get used to having our gadgets and don't use them where inappropriate.
Here in the Czech Republic (central Europe), a few years ago, you could hear cellphones ring everywhere around you. Now, while still quite annoying, it has subsided, even though there are many many more cellphones around. We'll just have to be patient.
Oh, and don't forget to give an annoyed look to the bastard receiving a cellphone call in a movie theater, or a short "shut the fuck up!" This way they'll gradually stop.
You see, not all creationists take the view that the universe was created as we know it, in seven days = 168 hours.
There has been a view that the Bible talks about God's days (periods of creation), each of which could take millions of years. AFAIK this view is that of God-assisted evolution. He gives the right impulses and the monkeys move off the trees.
This is not ridiculous, there are still some missing links in the known evolution and it does indeed seem that in a few moments in the history evolution sped up like hell.
In fact, this may be a pure chance as well as an act of God, and this cannot be resolved until God manifests Himself, like a face in the sky speaking everyone's language at once telling us to finally shut up and be good to each other.
(Personally, I believe this is possible, as much as the pure-chance scenario. No difference to me, really.)
It seems to me from short skimming through the article that AOL acted in its ISP role here, nothing with its content-provider role. And I think it's very just that ISPs cannot be held responsible if they remove offending content after they are notified.
Right... Like not being allowed to drink from a bottle in the street, while it's perfectly OK to drink from a bottle hidden in a brown paper bag?
I was complaining because the USA was created mostly to break free from the European systems. We may lead in limiting ourselves by many little laws, but the USA leads in having many ridiculous laws. And the worst? USA propagates its ridiculous laws back on the world.
I'm not trolling, I'm trying to respond with my humble opinion to the parent post.
OK, I'm European. I've spent a year in the States, though. Oh, and I know this is in Canada, which I thought was saner than the USA, but this is obviously the result of MPAA's and RIAA's boldness.
News like this always make me wonder when there's finally going to be a new revolution in "the land of the free" which would make it that once again.
But I'm afraid that after 9/11 it'd be very hard to do something seemingly against your own country... Pity.
It seems that Huygens' was the first observation of a phenomenon known now at the subatomic scale as particle coupling. The youngsters (Hawking et al) can still learn a few tricks from the guys of the past. 8-)
If the document is physically at the client node, destroying it a fixed time after it was read always has to rely on a trusted software. Software can be reverse-engineered. Therefore I only see hope for thin clients securely authenticating and connecting to a trusted server storing the documents and destroying them exactly the given time after they were accessed.
This has several drawbacks:
A central server location can be attacked physically or subpoena-ed (don't know the spelling here)
the client must connect to the server when the information is needed - we're not there yet, I'd think
the information can be stored on the client in its uncrypted form.
Anyway, it's very interesting to think these paranoias. 8-)
This after the proposal???
on
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So after the great, touching story of the year we get some more MS BS? Well, I guess life just goes on.
I hope today's children have much better flashlights and much shorter books because I had done serious damage to my eyes by reading under the cover with a rechargable flashlight.
This might be offtopic, but they might start making flashlights that turn off when the battery is low, rather than reducing the intensity gradually. This way we could care about the eyes of our children - we know we can't make them go to sleep for our parents could not make us either. 8-)
In this regard, e-books could actually be the way to go.
Slashdot Mirror
A reschedule does not happen only on the timer tick (100 or 1000 times a second depending on HZ setting), it happens on a number of occasions, timer tick being one of them. The other ones remove the concerns zenyu seems to be having:
The second point may seem a little weird, but a process can only become willing to do something as a result of some interrupt - a timer if the process was sleeping for a given amount of time; a i/o interrupt if the process handles the keyboard or the mouse. In any case, interrupts are handled by the kernel and so if a process is to wake up from its sleep or if a process gets something in some stream on which it is waiting (stdin on keyboard interrupt, socket on network card interrupt etc.), that process is just scheduled to wake up and work.
So on an idle machine the HZ does not really have much impact, and on a utilized machine the smoothness of process interaction (like window manager vs. X server) increases with increased HZ but this also increases the overhead.
Hope it's clearer.
On the other hand, maybe "oh, gees" (plural of "oh, gee") would do.
And were those little sharks or human babies? Now I'd start worrying if it's the latter...
What d'ya think?
While right now I cannot give you a pointer to any of the many scientific studies that prove subliminal messages don't work, I know they don't, and my knowledge is reinforced every now and then, especially while browsing the web.
Oh... Shit!
It's nice and good to think about the wellness of the world, but first you have to know where your next meal will come from.
Oh, this is way cool! I love this non-case. Really. If only the new processors and other parts could stand such treatment and not melt down...
- we get used to the new additions to the noises of life,
- we get used to having our gadgets and don't use them where inappropriate.
Here in the Czech Republic (central Europe), a few years ago, you could hear cellphones ring everywhere around you. Now, while still quite annoying, it has subsided, even though there are many many more cellphones around. We'll just have to be patient.Oh, and don't forget to give an annoyed look to the bastard receiving a cellphone call in a movie theater, or a short "shut the fuck up!" This way they'll gradually stop.
I agree, cp99, I just called the in-range speedups "pure chance". 8-)
There has been a view that the Bible talks about God's days (periods of creation), each of which could take millions of years. AFAIK this view is that of God-assisted evolution. He gives the right impulses and the monkeys move off the trees.
This is not ridiculous, there are still some missing links in the known evolution and it does indeed seem that in a few moments in the history evolution sped up like hell.
In fact, this may be a pure chance as well as an act of God, and this cannot be resolved until God manifests Himself, like a face in the sky speaking everyone's language at once telling us to finally shut up and be good to each other.
(Personally, I believe this is possible, as much as the pure-chance scenario. No difference to me, really.)
It seems to me from short skimming through the article that AOL acted in its ISP role here, nothing with its content-provider role. And I think it's very just that ISPs cannot be held responsible if they remove offending content after they are notified.
Can you imagine a Beowulf cluster of such tiny machines?
8-)
You know when you're a true cracker: when you have a spare $5M to throw at stuff when good old social engineering doesn't work anymore. 8-)
I was complaining because the USA was created mostly to break free from the European systems. We may lead in limiting ourselves by many little laws, but the USA leads in having many ridiculous laws. And the worst? USA propagates its ridiculous laws back on the world.
I'm not trolling, I'm trying to respond with my humble opinion to the parent post.
News like this always make me wonder when there's finally going to be a new revolution in "the land of the free" which would make it that once again.
But I'm afraid that after 9/11 it'd be very hard to do something seemingly against your own country... Pity.
I actually do hope the craziness ends someday.
It seems that Huygens' was the first observation of a phenomenon known now at the subatomic scale as particle coupling. The youngsters (Hawking et al) can still learn a few tricks from the guys of the past. 8-)
This has several drawbacks:
- A central server location can be attacked physically or subpoena-ed (don't know the spelling here)
- the client must connect to the server when the information is needed - we're not there yet, I'd think
- the information can be stored on the client in its uncrypted form.
Anyway, it's very interesting to think these paranoias. 8-)(This is not a troll, it's just off topic.)
Anyway, a cluster of all the Harry Potter books (assuming they are all published digitally) could be a powerful thing!
We demand to be heard!
We demand strictly set levels of uncertainty and doubt!
The answer . . . to the ultimate question . . . of life . . . the universe . . . and everything . . . is . . . 42. That's all, folks!
This might be offtopic, but they might start making flashlights that turn off when the battery is low, rather than reducing the intensity gradually. This way we could care about the eyes of our children - we know we can't make them go to sleep for our parents could not make us either. 8-)
In this regard, e-books could actually be the way to go.
The poll you linked to deals with the material for the blockish case sitting on your desk.
My suggestion was more about the shape or even visibility of the computer - about the overall impression.
I hope the difference (however subtle) is apparent.
I wonder if they would accept as something interesting taking the data and posting it as troll page-lenghtening posts on Slashdot.8-)
I myself would be pretty interested in the results.