Announcing: Slashdot Deals - Explore geek apps, games, gadgets and more. (what is this?)

Thank you!

We are sorry to see you leave - Beta is different and we value the time you took to try it out. Before you decide to go, please take a look at some value-adds for Beta and learn more about it. Thank you for reading Slashdot, and for making the site better!



Software Engineering Is a Dead-End Career, Says Bloomberg

fdawg Yeah, I don't agree. (738 comments)

"(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.

more than 2 years ago

Investors Campaign To Oust Murdochs From News Corp

fdawg Re:Oh I understand their business plan (150 comments)

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.

more than 3 years ago

OCZ Wants To Cache Your HDD With an SSD

fdawg Re:SSD Cache and corruption (189 comments)

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.

more than 3 years ago

34% of iPhone Owners Think the 4 Is 4G

fdawg To be fair.. (306 comments)

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]

more than 3 years ago

23,000 File Sharers Targeted In Latest Lawsuit

fdawg Re:MAFIAA at it again (386 comments)

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.

more than 3 years ago

Firefox On Linux Gets Faster Builds — To Be Fast As Windows

fdawg Re:Every improvement is highly needed, FF4 sux (306 comments)

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.

more than 3 years ago

Ask Slashdot: Are You Streaming-Only For Home Entertainment?

fdawg Quality over Quantity does not apply (697 comments)

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.

more than 3 years ago

Are Graphical Calculators Pointless?

fdawg s/.*/computer/g (636 comments)

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.

more than 3 years ago

AMD Publishes Open-Source "ATI Evergreen" Driver

fdawg Re:So what does it do? (159 comments)

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

more than 4 years ago

Sun Debuts Java 'iPhone'

fdawg Re:How does this compare to OpenMoko? (195 comments)

It looks like the same phone and the article mentioned it was running linux. Chances are they are the same.

more than 7 years ago



fdawg fdawg writes  |  more than 8 years ago

fdawg (22521) writes "The video and the paper can be found here. From the abstract "This paper presents a fully independent security study of a Diebold AccuVote-TS voting machine, including its hardware and software. We obtained the machine from a private party. Analysis of the machine, in light of real election procedures, shows that it is vulnerable to extremely serious attacks. For example, an attacker who gets physical access to a machine or its removable memory card for as little as one minute could install malicious code; malicious code on a machine could steal votes undetectably, modifying all records, logs, and counters to be consistent with the fraudulent vote count it creates. An attacker could also create malicious code that spreads automatically and silently from machine to machine during normal election activities — a voting-machine virus. We have constructed working demonstrations of these attacks in our lab. Mitigating these threats will require changes to the voting machine's hardware and software and the adoption of more rigorous election procedures.""


fdawg has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?