Forgot your password?

typodupeerror

Comment: Re:Sandy Bridge on Linux? (Score 1) 96

by CRC'99 (#39268527) Attached to: Intel Releases Sandy Bridge-based Xeon E5 Series

I posted this just above, but as this is a thread purely about linux on SB, I'll place it here also:

Be careful. You may get bitten by this bug. The tl;dr version: If your apps use dynamic loading on Sandy Bridge, you may get segmentation faults cause by a bug in glibc.

RHEL should have this fixed by release 6.3. Other clones of EL will get the fix via the update to 6.3 after RH has released it.

Comment: Re:Are there any benchmarks posted yet? (Score 2) 96

by CRC'99 (#39268483) Attached to: Intel Releases Sandy Bridge-based Xeon E5 Series

We run a large number of XenApp servers as VM's and while total system throughput is important so is single threaded performance. Right now we use x5670's with 2.93 GHz clock speeds and a 95W TDP. I'm wondering if the E5-2660 would be as powerful for single threaded workloads which would get us 33% more total throughput for the same power budget but I'm not sure that a 2.2GHz base clock with a 500MHz turbo boost using the SB core is going to be as fast as a 2.93GHz Westmere core.

Be careful. You may get bitten by this bug. The tl;dr version: If your apps use dynamic loading on Sandy Bridge, you may get segmentation faults cause by a bug in glibc.

RHEL should have this fixed by release 6.3. Other clones of EL will get the fix via the update to 6.3 after RH has released it.

Comment: Re:Who cares (Score 4, Interesting) 239

by CRC'99 (#38835613) Attached to: Jailbreaking Could Soon Become Illegal Again

As someone who recently jailbroke his iPad2, its one of the best things to ever happen to my iPad!

I bought a WiFi only model - as for my purposes, the onboard GPS is *very* substandard. When then trying to use a normal bluetooth GPS, I find out that you need a GPS that speaks "Apple" at $99USD + shipping to your country. After the jailbreak, a $5 donation to the guy who wrote a part of a bluetooth driver and bingo, now it works with ANY bluetooth GPS.

Theres also this awesome extension called "Mail Extender" that adds all the features that mail clients have developed over the last 10 years when Apple decided that you shall not send anything but plain text emails.

Thankfully, I live in a country where console modchips and other methods for device compatibility are 100% legal - and tested in court.

Comment: Re:Has this ever caused noticeable interference? (Score 1) 66

by CRC'99 (#38801623) Attached to: Sun Blasts Another CME At Earth and Mars

I wonder how this will affect radio propagation... From the brief bits that I learnt many years ago, a charged atmosphere reflects HF radio much better making low powered communications across the globe possible.

Someone who understands more about this than I do able to enlighten me a little?

Comment: Re:IPv6 Info (Score 1) 463

by CRC'99 (#38735132) Attached to: June 6 Is World IPv6 Day 2012: This Time For Keeps

Its interesting how TFA says most disabled IPv6 support after the day - however:

host www.v6.facebook.com
www.v6.facebook.com has IPv6 address 2620:0:1cfe:face:b00c::3

# host ipv6.google.com
ipv6.google.com is an alias for ipv6.l.google.com.
ipv6.l.google.com has IPv6 address 2404:6800:4006:800::1011

Looks like of the 3 listed, only 1 backed out - Bing.

Comment: Re:MS Taking Aggressive Steps Against MALWARE On A (Score 1) 675

by CRC'99 (#38697656) Attached to: Microsoft Taking Aggressive Steps Against Linux On ARM

Has anyone stopped to think about piracy for a second? The BIOS loaders just about make Win7/Vista/Server2008 anti-piracy a joke. It circumvents it completely.

I figure if this actually does what it sounds, the main aim is to close the door on the bios loaders that prevent any kind of effective copy protection on Windows... If they could do it for x86, they would.

Comment: Re:CentOS (Score 1) 382

by CRC'99 (#37510742) Attached to: Newb-Friendly Linux Flavor For LAMP Server?

Given that you probably don't need a support contract, CentOS 6 would fit the bill nicely.

Its been a long time since I've posted here on Slashdot - and I agree with the idea of your post - however I would not recommend ANYONE currently doing any new rollout to use CentOS. After just getting a heap of updates pushed through for CentOS 5.x that are mostly security and bugfixes that are mostly a few months old, I would highly recommend using Scientific Linux instead.

You can find more details on Scientific Linux on their site.

In a nutshell, its still RHEL (with a few minor changes), however updates seem to be delivered on time and with minimal delay. The project also doesn't seem to have the infighting that has infested the CentOS world.

Comment: Re:Actually, you're right. (Score 2) 449

by CRC'99 (#36272896) Attached to: Flight 447 'Black Box' Decoded

Forgive the laymen for asking a stupid question: wouldn't it make sense to use accelerometers and gyroscopes to help to determine the attack angle and speed? Isn't a gyroscope a standard equipment in a cockpit?

It doesn't quite work like this. A gyroscope is set to a point in space and will always track that point. An artificial horizon will always show relative to the horizon. Angle of attack however is different as it has no bearing on the actual angle to the horizon. To explain this a little better, I shall go into a bit of detail and mention a little bit of aerodynamic theory.

Usually, a wing generates the most like with the least drag at about a 4 degree angle of attack (AoA). This is handy to know. When an aircraft starts its takeoff roll, the wing will usually be about 4 degrees above the horizon. As you are rolling along the ground (assuming its perfectly flat), this 4 degrees is perfect for maximum lift.

This changes when the aircraft raises its nose. The AoA increases (usually to 10-14 degrees) at rotation, but as the relative airflow changes to the aircraft climbing, the AoA will drop back to about 4 degrees. At this point, the aircraft nose will *still* be 10-14 degrees nose up. As the airflow is not parallel to the earth (as the aircraft is now climbing) it is quite different to the pitch of the aircraft.

For this reason, it is impossible to get an AoA from a gyro - you need to measure exactly where the air is coming from - not the pitch of the aircraft.

Electronics warranties in todays age.

Submitted by CRC'99
CRC'99 writes "With the current state of global trade, it has never been easier to shop from the comfort of your own home and have the latest and greatest shipped directly to your home. With these options though, what has happened to the warranties of various electronic devices? After recently suffering at the hands of HTC for a faulty phone, I'm wondering what other global companies offer true warranties for their products. What experiences have people had with other tech companies with a presence all over the globe? What suggestions do people have for companies and warranties in the age of Internet Shopping?"

Comment: Re:This all sounds backwards (Score 1) 44

by CRC'99 (#34205768) Attached to: Hackers Blamed For MessageLabs Spam Blunder

I think that's just bad phrasing. My reading is that they only found out that the customer had been "hacked" because they were blacklisting (i.e. 'hacking' occurred, blacklisting occurred, awareness of blacklisting occurred, and finally awareness of 'hacking' occurred).

Exactly - and isn't this the whole idea on how this is supposed to work?

Comment: Re:Flat technology! (Score 1) 608

by CRC'99 (#33829182) Attached to: Flat Pay Prompts 1 In 3 In IT To Consider Jump

My concern isn't so much flat pay - I have more money than I know what to do with - but flat technology. I spend my days fixing idiotic bugs in legacy systems, with few prospects for learning anything new.

I think you're probably the majority. When I decided to take the leap out of IT nearly 3 years ago now, I was on roughly the same wage as I first started in IT nearly 10 years earlier. Yes, it was a little better, but nowhere near what I would expect.

My positions were:
1) Desktop support / network admin - first ever IT job - ~$40k AUD
2) 3 months contracting - much more than $40k when averaged over the 3 months.
3) 3rd level network support for a telco - about 300,000 users or so - ~$48k AUD
4) VoIP design / rollout - ~$41kAUD
5) Network Operations - mid-size ISP covering AU/SG - ~$45k AUD
6) Call centre team leader - ~$41k AUD.

Then I left IT to go fly planes. Less stress. Less bullshit to deal with. More enjoyable. Go Figure.

Comment: Re:Hasn't it already? (Score 4, Insightful) 583

by CRC'99 (#33802712) Attached to: Can Large Scale NAT Save IPv4?

Joke aside, my network printers don't support IPv6, my 802.11 access point doesn't support IPv6, my SIP phone doesn't support IPv6, my ADSL modem/router doesn't support IPv6.

Tell me again, how is this transition supposed to work if a good 50% of equipment doesn't support IPv6?

Even if all these devices actually did support IPv6, why would I want them on publicly accessible IP addresses? The truth is, IPv6 hasn't taken off because really there is no huge need for it. Private networks (and there is gobs of IP space for those) are the norm, and in 90% of cases are more than acceptable with a device doing NAT to the rest of the world.

There is nothing stopping people having both public and private IPs (like I have) for things that don't behave behind NAT. That is unless your ISP won't give you addresses....

Comment: Re:Any World Series where ther Yankees lose (Score 2, Insightful) 148

by CRC'99 (#33695528) Attached to: Bing Crosby, Television Sports Preservationist

I've never understood why its a World Series when it is only ever featuring American teams... On the same level as Miss Universe etc...

Interestingly, the only examples I can think of where things are grossly exaggerated have their roots in America. High School education fail?

Politics are almost as exciting as war, and quite as dangerous. In war, you can only be killed once. -- Winston Churchill

Working...