Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!



Microsoft Remotely Deleted Tor From Windows Machines To Stop Botnet

Thundersnatch Re: A Microsoft Killswitch (214 comments)

What, exactly do you think Yum/Apt and other FOSS package systems do do? They give the same root permissions to a random package maintaine; an individual who likely would more easily be swayed by the money of organized crime or the NSA than a fairly rich and likely highly audited MSFT employee. As far as I know, there are no audits at all done of the actual binaries distributed by Linux package managers.

about 6 months ago

WebKit As Broken As Older IE Versions?

Thundersnatch Re:No (213 comments)

Webkit is open source, with an active community that cares about standards, has an explicit policy of trying to behave like other browsers where possible...

All evidence to the contrary. The number of "broken in latest Chrome" bug reports we've had coming out of QA recently is quite alarming. Things like certain tags not appearing in the layout at all, or massive layout gaps that don't appear in any other browser.

Personally, I think Chromium is moving too fast, and now Mozilla is following. Many of the bugs we've encountered were regressions, broken in Chome say 15, fixed in 17, and then broken again in 24.

about a year and a half ago

Fedora 19 Nixing MySQL in Favor of MariaDB

Thundersnatch Re:Postgresql (116 comments)

The closest thing to case-insensitive collation is the citext data type. It works basically transparently as a case-insensitive replacement for varchar and text.

The major feature keeping $dayjob from using PostgreSQL over MSSQL in new development is the lack of an accent-insensitive collation. Making an index using a custom function marked IMMUTABLE that calls (lower(unaccent(text)), and then calling the same function in nearly every query, is simply too hackish to stomach.

about a year and a half ago

Hypersonic Test Aircraft Peeled Apart After 3 Minutes of Sustained Mach 20 Speed

Thundersnatch Re:the point, exactly? (191 comments)

Consider also that without such pioneers as Chuck Yeager we would not have transsonic or supersonic airliners.

Umm... we don't. That 1970s french/brit thingy crashed, and that was that. It just costs to damn much to fly an airliner past Mach-1. It's like commuting 30 miles to work every day in a Bugatti Veyron at 2 mpg.

more than 2 years ago

Hypersonic Test Aircraft Peeled Apart After 3 Minutes of Sustained Mach 20 Speed

Thundersnatch Re:Close to re-entry speed (191 comments)

And while they're busy doing that they often manage to put on one hell of a show:
* this effort
* the autonomous vehicle DARPA Challenge
* other random bits that we read about
* certainly other random bits we have no idea about, but I bet they're cool!

* the fucking Internet

you kids these days need to learn your history

more than 2 years ago

India Test Fires Long-Range, Nuke-Capable Missile

Thundersnatch Re:Wait, hang on (336 comments)

Yes, Israel has been at war with its neighbors, but only because it has been repeatedly attacked by those neighbors. Not that Israel plays especially nice these days - in fact they act like total dicks. I probably would act a bit dickish too if 90 million of my neighbors had vowed to wipe my people from the face of the Earth, and repeatedly attacked me with tanks and artillery to prove that they weren't just talking.

more than 2 years ago

Server Names For a New Generation

Thundersnatch Re:Be creative but have rules (429 comments)

You just gave away your inexperience there.

You really want to touch configuration files on hundreds/thousands of machines just because a server IP has changed? How do you migrate a server to new hardware without downtime?

There's this thing called a "DNS Resolver Cache", in every OS. And another thing called a "TTL" on a DNS record. They'll save you hours of scripting work the next time you need to do a service migration.

more than 2 years ago

LulzSec Leader Sabu Unmasked, Arrested and Caught Collaborating

Thundersnatch Re:Sabu is unemployed - what a surprise (511 comments)

You do realize that by denying people access to employment after their jail term has ended, you're leaving them only one option: Criminal activity, correct?

He can dig ditches, mow lawns, shuck corn, whatever. That's gainful employment. What he cannot do is expect to ever be put in a position of trust by his employer. That's the way it works for convicted felons - it ruins your life, even after you are out of prison. It's been that way since Greece ruled the Mediterranean, and will likely always be that way.

more than 2 years ago

LulzSec Leader Sabu Unmasked, Arrested and Caught Collaborating

Thundersnatch Re:it's a mole! (511 comments)

Really? You're suggesting the douchebag antics of Lulzsec and Anonymous are somehow patriotic? A form of righteous civil disobedience?

Or are you just being an asshole?

more than 2 years ago

Apache 2.4 Takes Direct Aim At Nginx

Thundersnatch Re:What we need (209 comments)

Nginx 1.0+ supports backend keepalives with a patch and module, but they are still not in official release. But this code comes from the principal nginx author, so it will make it into release soon.

That said, your back-ends are usually very close network-wise to nginx proxies, and connections can be established and torn down in less than 1 ms. Since the back-ends are usually thread-based, this is a good idea anyway (which is why everybody has to turn off HTTP keepalives in Apache when they start to scale). Disabling HTTP keepalives SUCKS for the client's experience, especially if they are on wireless/mobile connections or on another continent.

I manage a medium-sized SaaS application with about 0.7M users, and we front dozens of honking physical JBoss/Tomcat boxes with a single-core linux VM running nginx with 1 GB of RAM (with a hot standby of course). Nginx is only proxying to back-ends, not serving static files (except for a small 512MB set of really hot files using proxy_cache which stays in the filesystem cache). Nginx itself uses only about 100 MB with 8 worker processes. This isn't surprising: even the biggest $50K F5 load balancers have very wimpy specifications for CPU and RAM, but like nginx they use an event-driven model to keep RAM usage and context-switching to a minimum.

One problem running nginx on Linux is that asynchronous IO on Linux is horribly broken by design, and only works for databases that use direct uncached IO. So we are looking at moving nginx to FreeBSD so we can take advantage of asynchronous disk IO as well as the default asynchronous network IO.

The one-thread/process-per-connection model of Apache really just doesn't cut it for web-scale workloads. We were able to re-purpose our dedicated Apache front-end boxes as application servers instead because of the RAM savings. So nginx saves us about $2k per month in colo costs.

more than 2 years ago

SSD Latency, Error Rates May Spell Bleak Future

Thundersnatch Re:4TB limit (292 comments)

not standard form factor 5.25" drives

1991 just called, and they want their standard hard drive form factor back.

more than 2 years ago

SSD Latency, Error Rates May Spell Bleak Future

Thundersnatch Re:Throughput isn't measured in IOPS (292 comments)

Actually, that's when I realized that the guy writing the article didn't have a clue. Since when is throughput measured in IOPS?

Since always. Throughput is always operations per second, or transactions per second. Bandiwdth is measred in Mbps or MBps.

more than 2 years ago

Retail Chains To Strike Back Against Online Vendors

Thundersnatch Re:I do the opposite (532 comments)

The brick and mortars need to focus on providing a better overall value, and that includes their employees being able to enumerate exactly WHAT that better value is.


You do nobody any good by "buying local" just because or buying an inferior product because it is made-in-the-USA. It just keeps inefficient/low-value-add operations alive in zombie mode and provides no incentive for the necessary change that will actually improve the economy long-term.

For example, I did a huge chunk of my Christmas shopping at Nordstrom. I paid probably 25-30% more than I would online or elsewhere. But I did so because they let me sit in a comfy chair, and got me coffee. Then the helpful salesperson went and picked out items for my wife, sisters, mom, etc. that I simply had no chance of choosing well on my own. That's value-add.

more than 2 years ago

Royalty-Free MPEG Video Proposals Announced

Thundersnatch Re:Or you can just... (108 comments) has shown that the best available VP8 encoders require almost 2x the bitrate of the best H.264 high profile encoders.

Got links?

Sure... this is the most comprehensive qualitative test I've seen, using a huge varietry of sources and metrics. See conclusions section on page 93, which shows WebM requiring >2x the bits of x264 for the same quality.

A rigorous subjective comparison can be found here, using the Double Stimulus Continuous Quality Scale methdololgy.

Note in both subjective and objective comparisons, WebM takes 2x or more bits to achieve the same quality at web bitrates of ~500 kbps.

At much higher bitrates, the quality differences narrow. But high bitrates aren't valuable for Internet use cases, and in any case at 2.5 Mbps and SD resolution, even inefficient codecs like MPEG-2 or WMV8 look good.

more than 2 years ago

Royalty-Free MPEG Video Proposals Announced

Thundersnatch Re:Or you can just... (108 comments)

Under normal viewing conditions, WebM and H.264 are comparable.

No, they really aren't. Every rigorous quantitative and rigorous qualitative (large sample sizes and double-blind) study has shown that the best available VP8 encoders require almost 2x the bitrate of the best H.264 high profile encoders.

VP8 is basically useless, as it is very likely encumbered by patents (12 different companies have made claims, and Google will not offer indemnification for a reason). So it isn't free, it is extremely slow, and it requires twice as many bits. I operate a commercial video site, and guess what? Our H.264 licenses cost less than the extra storage and bandwidth WebM would require. And the WebM tool chain sucks.

more than 2 years ago

EU Speaks Out Against US Censorship

Thundersnatch Re:Time to replace DNS (477 comments)

The root servers are already quite distributed, thank you. Are you suggesting the roots should contain differing data and somehow resolvers decide what to use by voting or reputation scoring or some shit like that? The PGP web of trust didn't take off. That model has been tried and doesn't work.

more than 2 years ago

OpenPGP Implemented In JavaScript

Thundersnatch Re:Whats this obsession for everything in Javascri (167 comments)

Javascript is the only language actually delivering on the promise of "write-once-run-anywhere." Well, "anywhere" that has a web browser, which is just about any device that does human interaction these days. All the other languages you mentioned have numerous environmental dependencies (separately installed run-times, OS specific conditionals, browser plug-ins, compiler specifics, etc.). Javascript sucks in many ways, but it sucks less than the alternatives for building an application quickly that can work just about anywhere.

more than 2 years ago

EU Speaks Out Against US Censorship

Thundersnatch Re:Time to replace DNS (477 comments)

I think this is a sign that DNS needs getting replaced with a non-centralized system.

Is there anybody working on such a thing?

Good luck with that. This is an industry that hasn't replaced IPv4 despite 15 years of warnings. An industry in which horrifyingly broken and insecure protocols such as SMTP and FTP are still ubiquitous. Once something is widely deployed, it basically cannot be changed, or only changed over the span of decades.

more than 2 years ago

Dennis Ritchie, Creator of C Programming Language, Passed Away

Thundersnatch Re:Not just the apps (725 comments)

ssembler still used in much of the kernel.

Umm... no. Assembler is used in very little of the kernel. Just a few performance-critical places, like spinlocks, compare-and-swap, and parts of the HAL if I remember correctly. That's why it is fairly easy to port the NT kernel to other architectures (MIPS, Alpha, PowerPC and now ARM).

more than 2 years ago

iOS 5 Update Available

Thundersnatch Re:That didn't take too long to fail (473 comments)

WTF? Safari updates on OSX require a reboot? Even MSFT has finally figured out how to do (some) IE updates without reboots on Win7 and 2008r2.

Actually, now that I think about it, every recent Ubuntu 10.04 Server update has also given me the **system restart requried** banner, even when there wasn't a kernel update.

I guess those re-bootless updates on **NIX were always a myth.

more than 2 years ago



Apple installs Safari by default again

Thundersnatch Thundersnatch writes  |  more than 3 years ago

Thundersnatch (671481) writes "It appears that Apple is once again making its Safari 5 web browser and MobileMe software install by default via Apple Software Update on Windows, even if users had previously deselected these options in their preferences. They've been down this road before and faced significant backlash. If Microsoft did something like this people would be calling for a DOJ investigation."

Microsoft making WGA less distruptive

Thundersnatch Thundersnatch writes  |  more than 6 years ago

Thundersnatch (671481) writes "Microsoft seems to be actually listening to customers frustrated by Vista activation issues, and is going to change the behavior of Vista systems that fail activation. Instead of a reduced funcationality mode, Vista will now simply nag the user in various ways. Access to programs and files will not be limited. These changes are coming with the release version of Vista Service Pack 1, which is already in beta test."



Slashdot's servers misconfigured?

Thundersnatch Thundersnatch writes  |  more than 4 years ago

It appears that Slashdot's server admins have mis-configured HTTP compression, resulting in massive bandwidth waste.

Using a HTTP debugging proxy, the logged-in user front page comes in as an 85 KB compressed download. That seemed kind of large to me, so I did some investigation. The same page, uncompressed, is actually 200 bytes smaller. So, in effect, there is no compression at all. When compressewd with sane settings (gzip -6), the same HTML page is just 20KB.

Slashdot is effectively quadrupling their bandwidth bill because of this mis-configuration. I do not believe there are any transparent proxies in front of me causing this behavior.

Can anyone else confirm?

Slashdot Login

Need an Account?

Forgot your password?
or Connect with...

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>