"(Norman Matloff is a professor of computer science at the University of California, Davis. The opinions expressed are his own.)"
Ya know, If I was a prof of CS at UCD, I'd probably think my upward mobility was limited too. I interview fresh college grads and senior professionals alike in my software company. I, personally, am equally likely to pick either. Age isn't as much of a metric for ability as ability is. 20somethings have lots of energy. 50somethings have lots of experience. A good team needs both.
Facebook is an experiment. It's unclear how successful they will be as a company. I do know people that work there and youth is a highly regarded trait. MSFT is a failed experiment. A company like that is where talent goes to die, in my opinion.
It's ok to be frustrated. I know, I am. But muting people who have a different ideology from your own doesn't solve anything. In fact, the reverse happens- the people you disagree with become as frustrated as you.
The harder problem is getting them to, if not agree with, tolerate your ideology. What we've lost in this country is honest, unadulterated, innocent, discourse. We stopped having conversations where a different point of view doesn't dominate another. Too much of what is being said is predicated by various single-issue objectives and amplified by a blow horn of party loyalists.
Fox news is a blow horn. Would be interesting to see what will happen if the family behind the mouthpiece is ousted. For all anyone knows it may move even further away from the center.
Obv I have no idea how OCZ plans on doing this, but I can tell you what a standard journaling fs does.
In any event, how well can this device recover from a dirty-cache shutdown?
Chances are this cache is transparent. The blocks translate to vblocks which map to physical blocks on the rotational media. A "dirty" block is a vblock which hasn't been committed to the physical block. However, this is transparent to the filesystem. When the system comes back up and the journal is replayed at say, some operation 10, and we find the relevant blocks for op 10 which happen to be vblocks in the SSD, the write is stable. It's a NOOP from the filesystem perspective.
What happens if the device just dies? Will I still be able to mount the HDD and recover data?
This is the same as a single, non-tiered, drive dying. Same semantics- cache is dead is equivalent to the drive being dead. That is to say unless the journal and superblock live somewhere else. IIRC ext2/3 keeps the initial copy of the superblock in a few places on the drive. Depending on which you can recover, you'll get a version of the filesystem (likely the one when you first created the fs, i.e. an empty fs). In short, pay attention to your SMART data, and always (ALWAYS!) backup.
It would be interesting to see how a journaling file system handles the abstraction of one volume read/written between two different drives. Were not talking about RAID5 here where you at least have parity data to recover from.
Most journals arent like NVRAM and don't follow the copy on write semantic. Journal replay is usually a data-loss event if all writes weren't stable before the replay. With that in mind, most volume managers (the original "VM"!) allow your fs to write to as many drives as the vm allows. This seems no different. But yeah, maybe they're doing something smarter here.
LTE and WiMax isn't 4G either. This means no 4G phones exist yet.
"Pre-4G technologies such as mobile WiMAX and first-release Long term evolution (LTE) have been on the market since 2006[2] and 2009[3][4][5] respectively, and are often branded as 4G in marketing materials. The current versions of these technologies provide downstream peak bitrates of 144 Mbit/s and 100 Mbit/s respectively, and do consequently not fulfill the original ITU-R requirements of data rates approximately up to 1 Gbit/s for 4G systems." [http://en.wikipedia.org/wiki/4G]
What type of behavior? Stealing? Call it what you want and use whatever technical detail to obfuscate the fact that a subset of 23,000 people took something from someone else without paying for it.
And seriously. All that for a Stalone flick?
USA! We're number #1! (in extorting our citizens for corporate greed)
This is the MPAA going after (with almost 99.9% certainty, illegal) downloaders. Not Haliburton lobbying congress for a no bid contract to deploy security and infrastructure services in Iraq to the Army (which already has it's own security and infrastructure services). Or Morgan Stanley not claiming their debts to inflate their growth numbers so the gov't no longer has a say on executive bonuses.
I can attest to the same behavior. My default page is www.google.com/ig which aggregates a bunch of RSS feeds. Next I open a tab to Gmail, Engadget, Gizmodo, NY Times, and The Consumerist. I leave these tabs open. I then open a new window to my company's bugzilla (which is the default installation of bugzilla, the version escapes me, but I can get the version on monday if it's of importance), open maybe a half dozen bugs in different tabs, editing bugs as the day goes on, then flip back to the original window to see what i missed on each tab.
In this state, 2 windows, lots of tabs each, moderate refreshing as the day goes on, I have yet to last greater than 48hrs without FF dying taking both windows and all tabs with it.
It's the default install of FF with 64bit Ubuntu 10.4 with the Adblock and Adobe Flash plugins as of about 6 months ago. It's an 4 core i7 with 12gigs of ram. As you've mentioned, in this kind of usage, FF caches up to about a gig and eventually the kernel pages the cache out. Naturally when I switch contexts back to FF, things churn for a while which is highly inconvenient.
I've switched to Chrome since and have not seen anything remotely similar- things stay open for weeks sans restarts for updates. (This is not a dig. FF is wonderful when it works. Chrome simply provides the level of stability I can live with.)
Thanks for taking the time. I can give you more details on monday if it would help.
Most streaming sources (Comedy Central, ABC News) have really crappy quality. I end up going the old fashioned route for broadcast TV and go home at a certain time and flip on the rabbit ears. OTA HD is really amazing.
For everything else, Netflix, AppleTV, and PS3 fulfill my entertainment needs. The quality of their streams/content are usually very good.
I tried Boxee and most free streamed content just looks terrible on a large HD TV.
Cutting the cord is doable, but you have to keep your expectations low and have to be of the mind of someone who enjoys tinkering for the sake of tinkering. Often, you'll end up tinkering more than couch-potato'ing. If you have a 2-body problem (i.e. significant other), this is an unacceptable solution for the most part, and for good reason. It really shouldn't be that hard to watch what you want when you want it.
So it boils down to how much you watch tv vs how much time you want to spend hunting for content. It's never a free lunch, but if you have a significant-other/family then it's probably not worth the grief.
What is the probability you'd be in a situation professionally where you had enough time to boot up a laptop, install the relevant software, assume you already know how to use it, and do something productive with it and not get fired?
Solving simple differential equations or linear algebra in a pinch is exactly why I keep my calculator. The same calculator I used in school many moons ago. I've used Matlab and Mathematica, and can be moderately productive with them. But I'll always stick to my trust TI-89 for its utility and consistently error-free operation.
For me its the same thing as having a PC instead of a TV. Yeah, it works. But the startup cost (in time) and maintenance is non-negligible.
Have you tried watching accelerated 1080p video on a relatively new nVidia card? You'll soon find the hardware AVC decoder (Xvmc does not equal decoder) available in Windows is not available in Linux. GL works grand, but watching videos at any high resolution (native, not some upscaled Xvid or the like) is totally CPU bound in Linux while HW accelerated in windows.
Try debugging through from the webserver to the webservices, debug the XSLT, down into the database and into the stored procedures in LAMP.
If your setup requires that level of debugging, I find your competency suspect.
Netgear, IIRC, makes L3 switches that are very proprietary (and horribly unstable). I've used their gigabit offering (GSM*some bunch of numbers*) and it would barf at 10Mbit/s of multicast.
I believe most of this decline is due to the loss of corporate accounts. My company (which is heavily into bleeding edge technology and, as such, has a high attrition rate of most PCs/laptops) stopped buying Dell quite some time ago because of their increasingly shoddy workmanship. When desktops cases don't close comlpetely and randomly open, and when servers fail consistently a few months after their warranty, its time to find another vendor.
IBM and HP have been good to us in their server quality. Lenovo, although I really dont like giving any more money to China, seems to be the only manufacturer to make laptops that aren't "disposable". Our Dells fell apart after 2 years.
I RTFA and the most I could glean off of it was some jazz about parallel reads. Now hold on, I thought a RAID's bread and butter were about parallel reads. Am I missing something?
Do they mean Parallel Reads off of a NAS setup? A bunch of NAS boxes, with some IBM magic, that shows up as a single volue?
They mention that the machine they are using is some massively parrallel monstrosity with multiple raids per unit. Does this FS aggregate all of them into a single volue? (If you haven't noticed, I'm looking for a clustering filesystem that won't fall appart.)
Sessions?? NICs, in this case, are ethernet. There is no such thing as a 'session' in ethernet. Cisco is using standard Intel NICs btw, and at least the PIX series are PC based (with a DES chip but a PCI card version is available).
Honda is a Japanese company, if I remember correctly. Does that mean they are still designed in Japan? Therefore, are we to assume this car will drive in the left lane, doing 5 miles, with its blinker on?
Really, its ok if I say it; I'm asian. *Turns blinker off*
It costs MS fractions of a penny per cd (or dvd, i dont even know, im an FOSS slut). Does that mean this is where all they're profits are from?
R&D for ANY company are astronomical. My lab designed radios that cost around a grand to manufacture. The R&D costs were being measured in hundreds of thousands, and thats still cheap.
Do you really need to be in the sticks? You're online and you read slashdot. That, in and of itself, proves to me that wherever you are, you have decent connectivity and probably go online often. The two (slashdot and the sticks) are mutually exclusive.
Benefit of the doubt time: Maybe you're a contractor or environmental scientist who needs to get to very remote places often. Well since, in this country, our major roadways are PAVED, I'm going to go as far as to say you spend 80 percent of your time on relatively level and suspension friendly average run of the mill ROADS. A place were an SUV is not the only mode of transport. You could (wait for it...) buy a CAR for every day travel and use your SUV only when needed. Thats still cheaper and more environmentally friendly than your hairbrained hibred SUV. A hibred SUV will never have better gas mileage than an ULEV like a civic.
Chances are you're just a selfish individual who needs to feel superior because mommy said you're special and aren't enjoying the anal pleasure Dubya and Haliburton are giving you every time your at to the pump.
I say its time to suck it up. You dug your hole. Now lie in it.
I am in the same boat; I admin multiple networks owned by different organizations, each with their own admin passwords. My mantra is to never know the super user passwords. If they dont give them to me, I am not the security risk. Instead, I give my user account the ability to sudo (or slide as the case may be), and copy my ssh keys where needed. This way I can have different user account passwords that I wont need to remember, have the ability to become root when needed, and if one of the client sites is compromised, the other clients are still secure. The issue is when my home machine (the machine with the ssh keys) is compromised. Thats when you hire a lawyer and consider moving to warmer climates.
...find the cause of their anger. This is a question I rarely see on the news amidst the rampant "reporting" about the War On Terror. Makes you wonder, doesn't it?
I digress. I've noticed security and law enforcement have a strange dynamic; they are completely inverse. If one was to have perfect security, there would be no need for law enforcement.
By picking a chosing who gets what freedoms, in this case the security and "anonymity" provided by the internet, a large (innocent) part of the populus gets the shaft. Lack of freedom in "the land of the free" is becoming nausiating.
Diplomacy will solve this problem, not invasion of privacy. The further we deviate from that ideal, the more WE become the terrorists.
We use them in my research lab and they prove to work very well in locating any radio device in a specified band. It comes with directional and omni antennea and dont simply decode an 802.11 packet and read the RSSI. It will actually measure the RF of every packet (included disgarded or hidden ones) from a given host and give you a very accurate power measurement that you can use to locate your offending device.
True, darwin does exist for the x86, but Darwin alone does not OSX make. (I sound like yoda.) Its a glorified BSD box that wont run anything that comes packaged for OSX, ie garage band, final cut, safari, MS Office, etc. In my opinion, useful desktop apps are what makes OSX what it is and Darwin does not fill the X86 gap in that regard.
Slashdot Mirror
"(Norman Matloff is a professor of computer science at the University of California, Davis. The opinions expressed are his own.)"
Ya know, If I was a prof of CS at UCD, I'd probably think my upward mobility was limited too. I interview fresh college grads and senior professionals alike in my software company. I, personally, am equally likely to pick either. Age isn't as much of a metric for ability as ability is. 20somethings have lots of energy. 50somethings have lots of experience. A good team needs both.
Facebook is an experiment. It's unclear how successful they will be as a company. I do know people that work there and youth is a highly regarded trait.
MSFT is a failed experiment. A company like that is where talent goes to die, in my opinion.
It's ok to be frustrated. I know, I am. But muting people who have a different ideology from your own doesn't solve anything. In fact, the reverse happens- the people you disagree with become as frustrated as you.
The harder problem is getting them to, if not agree with, tolerate your ideology. What we've lost in this country is honest, unadulterated, innocent, discourse. We stopped having conversations where a different point of view doesn't dominate another. Too much of what is being said is predicated by various single-issue objectives and amplified by a blow horn of party loyalists.
Fox news is a blow horn. Would be interesting to see what will happen if the family behind the mouthpiece is ousted. For all anyone knows it may move even further away from the center.
Obv I have no idea how OCZ plans on doing this, but I can tell you what a standard journaling fs does.
In any event, how well can this device recover from a dirty-cache shutdown?
Chances are this cache is transparent. The blocks translate to vblocks which map to physical blocks on the rotational media. A "dirty" block is a vblock which hasn't been committed to the physical block. However, this is transparent to the filesystem. When the system comes back up and the journal is replayed at say, some operation 10, and we find the relevant blocks for op 10 which happen to be vblocks in the SSD, the write is stable. It's a NOOP from the filesystem perspective.
What happens if the device just dies? Will I still be able to mount the HDD and recover data?
This is the same as a single, non-tiered, drive dying. Same semantics- cache is dead is equivalent to the drive being dead. That is to say unless the journal and superblock live somewhere else. IIRC ext2/3 keeps the initial copy of the superblock in a few places on the drive. Depending on which you can recover, you'll get a version of the filesystem (likely the one when you first created the fs, i.e. an empty fs). In short, pay attention to your SMART data, and always (ALWAYS!) backup.
It would be interesting to see how a journaling file system handles the abstraction of one volume read/written between two different drives. Were not talking about RAID5 here where you at least have parity data to recover from.
Most journals arent like NVRAM and don't follow the copy on write semantic. Journal replay is usually a data-loss event if all writes weren't stable before the replay. With that in mind, most volume managers (the original "VM"!) allow your fs to write to as many drives as the vm allows. This seems no different. But yeah, maybe they're doing something smarter here.
LTE and WiMax isn't 4G either. This means no 4G phones exist yet.
"Pre-4G technologies such as mobile WiMAX and first-release Long term evolution (LTE) have been on the market since 2006[2] and 2009[3][4][5] respectively, and are often branded as 4G in marketing materials. The current versions of these technologies provide downstream peak bitrates of 144 Mbit/s and 100 Mbit/s respectively, and do consequently not fulfill the original ITU-R requirements of data rates approximately up to 1 Gbit/s for 4G systems." [http://en.wikipedia.org/wiki/4G]
What type of behavior? Stealing? Call it what you want and use whatever technical detail to obfuscate the fact that a subset of 23,000 people took something from someone else without paying for it.
And seriously. All that for a Stalone flick?
USA! We're number #1! (in extorting our citizens for corporate greed)
This is the MPAA going after (with almost 99.9% certainty, illegal) downloaders. Not Haliburton lobbying congress for a no bid contract to deploy security and infrastructure services in Iraq to the Army (which already has it's own security and infrastructure services). Or Morgan Stanley not claiming their debts to inflate their growth numbers so the gov't no longer has a say on executive bonuses.
I can attest to the same behavior. My default page is www.google.com/ig which aggregates a bunch of RSS feeds. Next I open a tab to Gmail, Engadget, Gizmodo, NY Times, and The Consumerist. I leave these tabs open. I then open a new window to my company's bugzilla (which is the default installation of bugzilla, the version escapes me, but I can get the version on monday if it's of importance), open maybe a half dozen bugs in different tabs, editing bugs as the day goes on, then flip back to the original window to see what i missed on each tab.
In this state, 2 windows, lots of tabs each, moderate refreshing as the day goes on, I have yet to last greater than 48hrs without FF dying taking both windows and all tabs with it.
It's the default install of FF with 64bit Ubuntu 10.4 with the Adblock and Adobe Flash plugins as of about 6 months ago. It's an 4 core i7 with 12gigs of ram. As you've mentioned, in this kind of usage, FF caches up to about a gig and eventually the kernel pages the cache out. Naturally when I switch contexts back to FF, things churn for a while which is highly inconvenient.
I've switched to Chrome since and have not seen anything remotely similar- things stay open for weeks sans restarts for updates. (This is not a dig. FF is wonderful when it works. Chrome simply provides the level of stability I can live with.)
Thanks for taking the time. I can give you more details on monday if it would help.
I'm a streamer! Mostly.
Most streaming sources (Comedy Central, ABC News) have really crappy quality. I end up going the old fashioned route for broadcast TV and go home at a certain time and flip on the rabbit ears. OTA HD is really amazing.
For everything else, Netflix, AppleTV, and PS3 fulfill my entertainment needs. The quality of their streams/content are usually very good.
I tried Boxee and most free streamed content just looks terrible on a large HD TV.
Cutting the cord is doable, but you have to keep your expectations low and have to be of the mind of someone who enjoys tinkering for the sake of tinkering. Often, you'll end up tinkering more than couch-potato'ing. If you have a 2-body problem (i.e. significant other), this is an unacceptable solution for the most part, and for good reason. It really shouldn't be that hard to watch what you want when you want it.
So it boils down to how much you watch tv vs how much time you want to spend hunting for content. It's never a free lunch, but if you have a significant-other/family then it's probably not worth the grief.
What is the probability you'd be in a situation professionally where you had enough time to boot up a laptop, install the relevant software, assume you already know how to use it, and do something productive with it and not get fired?
Solving simple differential equations or linear algebra in a pinch is exactly why I keep my calculator. The same calculator I used in school many moons ago. I've used Matlab and Mathematica, and can be moderately productive with them. But I'll always stick to my trust TI-89 for its utility and consistently error-free operation.
For me its the same thing as having a PC instead of a TV. Yeah, it works. But the startup cost (in time) and maintenance is non-negligible.
Have you tried watching accelerated 1080p video on a relatively new nVidia card? You'll soon find the hardware AVC decoder (Xvmc does not equal decoder) available in Windows is not available in Linux. GL works grand, but watching videos at any high resolution (native, not some upscaled Xvid or the like) is totally CPU bound in Linux while HW accelerated in windows.
It seems only the newest cards support HW video decoding. http://en.wikipedia.org/wiki/VDPAU
It looks like the same phone and the article mentioned it was running linux. Chances are they are the same.
Try debugging through from the webserver to the webservices, debug the XSLT, down into the database and into the stored procedures in LAMP. If your setup requires that level of debugging, I find your competency suspect.
Netgear, IIRC, makes L3 switches that are very proprietary (and horribly unstable). I've used their gigabit offering (GSM*some bunch of numbers*) and it would barf at 10Mbit/s of multicast.
Most of the gamers I know build their own boxes.
I believe most of this decline is due to the loss of corporate accounts. My company (which is heavily into bleeding edge technology and, as such, has a high attrition rate of most PCs/laptops) stopped buying Dell quite some time ago because of their increasingly shoddy workmanship. When desktops cases don't close comlpetely and randomly open, and when servers fail consistently a few months after their warranty, its time to find another vendor.
IBM and HP have been good to us in their server quality. Lenovo, although I really dont like giving any more money to China, seems to be the only manufacturer to make laptops that aren't "disposable". Our Dells fell apart after 2 years.
I RTFA and the most I could glean off of it was some jazz about parallel reads. Now hold on, I thought a RAID's bread and butter were about parallel reads. Am I missing something?
Do they mean Parallel Reads off of a NAS setup? A bunch of NAS boxes, with some IBM magic, that shows up as a single volue?
They mention that the machine they are using is some massively parrallel monstrosity with multiple raids per unit. Does this FS aggregate all of them into a single volue? (If you haven't noticed, I'm looking for a clustering filesystem that won't fall appart.)
Sessions?? NICs, in this case, are ethernet. There is no such thing as a 'session' in ethernet. Cisco is using standard Intel NICs btw, and at least the PIX series are PC based (with a DES chip but a PCI card version is available).
Honda is a Japanese company, if I remember correctly. Does that mean they are still designed in Japan? Therefore, are we to assume this car will drive in the left lane, doing 5 miles, with its blinker on?
Really, its ok if I say it; I'm asian. *Turns blinker off*
Can we honestly say "good faith" is their motive and not income tax?
It costs MS fractions of a penny per cd (or dvd, i dont even know, im an FOSS slut). Does that mean this is where all they're profits are from?
R&D for ANY company are astronomical. My lab designed radios that cost around a grand to manufacture. The R&D costs were being measured in hundreds of thousands, and thats still cheap.
*RANT* My question is "Why bother?".
Why bother buying an SUV at all?
Do you really need to be in the sticks? You're online and you read slashdot. That, in and of itself, proves to me that wherever you are, you have decent connectivity and probably go online often. The two (slashdot and the sticks) are mutually exclusive.
Benefit of the doubt time: Maybe you're a contractor or environmental scientist who needs to get to very remote places often. Well since, in this country, our major roadways are PAVED, I'm going to go as far as to say you spend 80 percent of your time on relatively level and suspension friendly average run of the mill ROADS. A place were an SUV is not the only mode of transport. You could (wait for it...) buy a CAR for every day travel and use your SUV only when needed. Thats still cheaper and more environmentally friendly than your hairbrained hibred SUV. A hibred SUV will never have better gas mileage than an ULEV like a civic.
Chances are you're just a selfish individual who needs to feel superior because mommy said you're special and aren't enjoying the anal pleasure Dubya and Haliburton are giving you every time your at to the pump.
I say its time to suck it up. You dug your hole. Now lie in it.
*/RANT*
I am in the same boat; I admin multiple networks owned by different organizations, each with their own admin passwords. My mantra is to never know the super user passwords. If they dont give them to me, I am not the security risk. Instead, I give my user account the ability to sudo (or slide as the case may be), and copy my ssh keys where needed. This way I can have different user account passwords that I wont need to remember, have the ability to become root when needed, and if one of the client sites is compromised, the other clients are still secure. The issue is when my home machine (the machine with the ssh keys) is compromised. Thats when you hire a lawyer and consider moving to warmer climates.
Or.....
...find the cause of their anger. This is a question I rarely see on the news amidst the rampant "reporting" about the War On Terror. Makes you wonder, doesn't it?
I digress. I've noticed security and law enforcement have a strange dynamic; they are completely inverse. If one was to have perfect security, there would be no need for law enforcement.
By picking a chosing who gets what freedoms, in this case the security and "anonymity" provided by the internet, a large (innocent) part of the populus gets the shaft. Lack of freedom in "the land of the free" is becoming nausiating.
Diplomacy will solve this problem, not invasion of privacy. The further we deviate from that ideal, the more WE become the terrorists.
You could try one of thesee t/yellowjacket.htm
http://www.bvsystems.com/Products/WLAN/Yellowjack
We use them in my research lab and they prove to work very well in locating any radio device in a specified band. It comes with directional and omni antennea and dont simply decode an 802.11 packet and read the RSSI. It will actually measure the RF of every packet (included disgarded or hidden ones) from a given host and give you a very accurate power measurement that you can use to locate your offending device.
Who Will Google Buy Next?
Micheal Jackson's lawyers. If they could get him out of that much heat (the nth time around), SCO will be no biggee.
True, darwin does exist for the x86, but Darwin alone does not OSX make. (I sound like yoda.) Its a glorified BSD box that wont run anything that comes packaged for OSX, ie garage band, final cut, safari, MS Office, etc. In my opinion, useful desktop apps are what makes OSX what it is and Darwin does not fill the X86 gap in that regard.
Next, I'll walk outside and see my car covered in bird poop.