60 Amps? To run a fireplace? Yes I know it takes a lot of power to split water - but my hottub doesn't draw that much power at full blast. Much as I'd love a clean burning fire in my fireplace - drawing 8-9kW to do it is nuts
Yeah - Dell's SX270's apparently had a LOT of motherboards with leaking caps. We just got boxes of motherboards from Dell (well rather FoxConn) to swap them out in the units that hadn't died yet (about 20% already had) That cost someone dearly - hopefully FoxConn and not Dell:)
Simple - Novell is not dumb enough to release the majority of their products as 'Suse only' They know RedHat has a huge installed base. Sure they want to build support for Suse distros - but if they go down the path of 'Suse or nothing' then I believe they will fail.
In various discussions with Novell regarding Suse (I work in IT at an east cost university), they have been clear that RedHat Ent support for their stuff was important.
I think the better context for the question you asked is - where are RedHat's value added services? Novell can give Suse away and still make money off the top level stuff - Novell services on Linux, edirectory, etc just like IBM does. You make the money of the commercial/enterprise apps. WHo cares if you make $10 on the base level OS package you run it on?
Not exactly - the article also says they are hiring a coordinator for the project, etc. So that $500K is covering more than just the HW - its covering the staff and programming needed to support the iPods and get content created for them. I'm sure in a joint project like this Apple gave them a pretty good deal
I always got a kick out of Dell's advertising about dropping stuff a few feet to test durability, etc
We got a brand new Dell 1750 Dual Xeon 1U server which was going to be our Novell R/W Replica & Login box. I put the versa rails in the rack, about 5ft off the ground. Now anybody who works with Dell's knows the new servers have these nubs on the sides which sit into slots on the extended rails - in other words instead of sliding the server INTO the rails like most servers, you have the rails already extended and set the server down ONTO the rails, into those slots. Then you slide everything into place.
Well, it was late - everybody was gone. But it was a 1U box - not TOO heavy (but heavy enough) So I hoisted it up and gently set the nubs into the slots - or so I thought. The right rear nub was not seated and it slipped out. The unit pivoted and our brand new 1750 went crashing into the floor below corner first!!!!! I can still picture it in slow motion as it hit the ground corner first, banged off the rack, and then slammed onto the floor.
Man talk about getting a sinking feeling in your stomach. The right rear corner was totally crumpled. In a panick I opened the case expecting to see a motherboard is a shattered corner.
Nope - the motherboard was fine. The power supplies had come out of their connectors - and slid right back in. The drives had come unseated due to the shock and had to be reseated. A couple hours later with pliers, ballpeen hammer, and other assorted tools, I managed to get the case corner bent back into what was close to normal. All the internals looked ok.
I booted up the system - nada. The 'Processor mismatch' LED was lit on the board. Ugh. Figured I'd cracked a CPU or worse. Then I noticed one of the heatsinks was ever so slightly higher than the other. I unhooked the retainers and found one of the processors had come OUT of the ZIF socket and was being held on top of the socket by the retaining clip. I could only imagine what the CPU had done to itself with its pins making intermittent contact with the socket below while power was on.
Well, after gently getting the CPU off the heatsink without cracking it (it was stuck to it by the heat paste), I reinserted the CPU, applied new paste, and reinstalled the heatsink.
Damn thing booted right up and has run without issue ever since - going on 6 months now. All diags, hard drives included, passed with flying colors.
Talk about dodging a bullet! Built Dell Tough!
Re:They pulled MySQL out!
on
PHP 5 Beta 1
·
· Score: 4, Insightful
Ah - well man they need to be clearer about it - the phrase makes it sound like they pulled out MySQL support. The Changelog mentions the library - but even it is really brief. I always thought PHP used your local libraries anyway - I didn't realize it came with them in 4.x
They pulled MySQL out!
on
PHP 5 Beta 1
·
· Score: 5, Interesting
Check this:
Due to issues surrounding the MySQL 4.0 license, the MySQL are no longer bundled with PHP. For more information on these licensing changes, please refer to the MySQL Licensing Policy.
Wow - that's not a smart move. I guess this is a GPL (MySQL) vs Apache (PHP) license issue? Anyone have more details?
I don't know that I would call it a huge weakness. First, redundant controllers in IDE RAIDs are not happening. The IDE bus was not designed to have two controllers. SCSI doesn't care and allows failover. You can't find dual controller IDE RAID boxes. Not going to happen.
That said, since this is FC - you CAN get redundancy if you need it. Buy 2 XRaids, RAID5 them, and then use RAID 1 in software (which is often faster than in HW anyway) This will ensure you have connectivity regardless. You are in effect clustering your RAID volumes which is done often (Think of it as RAID 5+1)
Considering what you would pay for an equivalent SCSI array - it still works out to be a good deal.
But - the trick is how often do controllers fail? Every thing else is hot swappable. You can get a parts kit which has just about every replaceable part, including the controller board. So yes, a controller failure drops your array, but getting it back up could be as easy as swapping controllers - so long as teh array itself isn't corrupt. Of course I've seen redundant SCSI arrays corrupt when a controller fails and hte other picks up - shouldn't happen, but it does.
They are claiming just over 200MB/sec with 14 drives which is impressive - granted this is probably RAID 0, but still, most of these FC to IDE boxen rate around 160MB.
I agree - this thing rocks. I just so happened to be looking at ATA RAID array's to hook up to a new Cisco MDS 9216 we hope to get (it handles volume mgmt, has iSCSI on the other end - very nice) Anyway, I was looking at all teh available ATA Raid boxen out there and they all lacked dual controllers. Only when you moved to SCSI disks did you get dual controllers. And the pricing of this is competitive. 2.5TB for $10K Wow - thats nice.
So I think this is a score for Apple - its hard to find true ATA RAID boxen with this kind of redundancy. That may change - but right now......
I marvel at how people think Dubya hung the moon and is the master of all that is righteous and good. But if people actually look below the fake surface of things, the black undercurrents become very visible.
The fact that our government would even consider such laws is monumentally scary. Why do Republicans believe that govenment oversight is such a bad thing? Did you notice that the only requirement was a group being designated a terrorist organization by the Attoreny General You can't be serious! One man could simply wipe out a group of people's citizenship - where are the checks and balances?
What kills me is how they sell this stuff. "Oh - so you think someone raisin gmoney for Al Queda shouldn't have their citizenship stripped?", etc, etc, etc. No - they shouldn't - try them, imprison them, but you can't honestly think stripping someones citizenship so easily is a good thing.
It is amazing how a group that believes Muslims shoudl rule the world knocked down the WTC and thus allowed Republicans to lay the ground work to rule the US for geenrations with tatics the communists would have used. How ironic and sad that my country is being taken over by conservative and religious zealots and nobody seems to care because it might, just might, allow them to prevent a terrorist attack (yeah right)
Not really because they lose money on every x-box sold and if we can run free software on it nobody wants to buy the expensief x-box games...
Sure - but lets be realistic - if you buy an XBOX and mod it - woudln't you still want to play some of the games> MS will break even at worst overall among mod chippers I'd think.
You're kidding right? IE is not some stadn alone program. It has MANY links into low level microsoft stuff where it is 'part' of the WIndows OS. This was the whole arguement of M$'s lawyers, that IE couldn't be removed easily.
So it wouldnt' surprise me if IE had access to some special stack API to pull stuff like this. Would not surprise me at all.
Wouldn't you be upset if IE pre-cached all the links in a page, just so users would have a bit of a speed boost?
Mozilla does this now, sort of. If the web page includes specific tags, Mozilla will pre cache those links to give a speed boost. BUT - since it requires tags, its something the web site can enable on a link by link basis
Except keep-alive connections are a part of HTTP 1.1. A part that Mozilla doesn't implement, apparently.
You obviously have no clue about networking. keep-alives are implemented at a MUCH higher level, using a keep=alive header to keep the connection open.
The sequences described here are low level packet tweaks which are not RFC compliant at all. They leave connections in a half closed state in case another non RFC compliant request comes in.
SO what happens? It makes IE requests complete faster on IIS, but non IE requests slower due to an extra handshake due to the connection being half closed.
* LCD Manufacturers: I want a high DPI screen, not a physically huge one. Why the hell can't I get a 15" 1600x1200 DESKTOP LCD Monitor???
Isn't that the damned truth! I've had a Dell Inspiron for 3 years now that has 1600x1200 LCD screen that looks awesome! Why can't I get one on my desktop. 1280x1024 just doesn't cut it for an OS (*cough*Linux*cough*) with decent graphics in the desktop:) Only XP looks good at low resolutions:)
Oh mod parent up! I'm only to #17 and I've already got tears in my eyes from laughing so hard - this guy is hilarious!
I didn't think you could make something worse that was already two hopping kids with their clothes on backwards. These people could have made a game about ass cancer worse than the original.
ROFLMAO!
This review is bogus!!
on
IDE RAID Examined
·
· Score: 5, Informative
I am one of the few who think IDE RAID is a useful tool and the 3Ware cards are the best out there.
So I was surprised reading the review to see the Adaptec and 3Ware neck and neck in the RAID 5 area. 3Ware's usually have no competition in RAID-5 since their firmware and HW rock.
Then I found out WHY they were so close:
"I don't currently have any boards that support 66MHz PCI slots, so all testing was done with
32-bit/33MHz PCI."
The 3Ware cards are 64-bit cards while the Adaptec's are only 32-bit. 3Ware cards can hit 70MB/sec writing and over 150MBsec reading with 8HD's! If they ever get to 66MHz, I expect their performance to go even higher.
If you want to see better benchmarks that fit with reality, check out the XBit Labs Review
It's really disappointing to see comments disparaging what is really impressive work - especially for reasons such as "this isn't new!" or "I don't get it!"
The latter is understandable - a whole lot of/. folks just realized they need to brush up on TCP/IP theory - and that's a good thing. I know I pulled out my cheat sheets while reading his presentation.
But the former is just plain annoying. Dan has done some really impressive work, using a very mature system in innovative ways. What did you expect? That he wrote some killer app that would make you rich during the IPO? This is great stuff - some of which doesn't have real world applicability (right now anyway), but so what? He's doing research into what CAN be done. I work in IT at a large research university and it really brings home the importance of research for research's sake. Others will come up with commercial applications where appropriate. But research is pushing the boundaries of existing knowledge or delving into completely new areas. For the sake of knowledge and learning.
That said, for all of you saying 'this isn't new' or 'it's no big deal till they write scripts for the script kiddies' what crack are you on? In addition to making my head spin this early in the morning, Dan's presentation and ideas sent a shiver down my spine. I administer an academic network which means no firewall. Dan's ideas, which I could use for good, can also be used for evil. Easily. This kind of stuff is scary.
Think about how much time, bandwidth and effort CodeRed wasted trying to spread itself probing systems that were not web servers. Imagine using this scanning technology as an opening salvo to a new exploit attack via port 80. BANG! Your network security folks sit up with a start as your Class B just got hammered hard. But it was over in 10 seconds. You look into it, but aren't really sure what it was. But now the attacker knows EVERY SINGLE HOST on your network running something on port 80. You (and the rest of the network) just got infected that much faster. Yes, previous papers already theorized this was possible (Warhol Worm, etc) But this makes it even scarier. A two stage worm could really blow things away. The first stage uses ultra fast scanning to build hosts responding to a given port. These first stage hosts develop into a network gathering available hosts to hit based on these ultra quick scans and then fire off stage two infections with pre-seeded network lists most likely to be vulnerable or offer the most targets.
Hell, the second stage would be WELL underway by the time most network security admin's pagers went off.
I tip my hat to Dan - this is great stuff with many useful applications, even if some are less than savory.
Cut and Paste. Linkcat lets you do that with packets:-)
This, sir, was genius. After reading your presentation at 5AM and not having my head explode, seeing this made me laugh out loud. I'd love to see the look on some webmaster's face trying to figure out why their obscure online store got so much traffic in a 4 hour window their server crashed.
"Linkcat? Whats that? Is Radio Shack giving away useless toys again? Who are all these geeks and why did they crash my store? Hey Lloyd, we better quadruple our stock of scissors - don't ask!"
What would have made sense was to compare the latest Mac OS X offering (10.2 Jaguar) with 2.4.19 which is the latest Linux kernel. Using 10.1.5 put the Mac at a disadvantage. Significant changes were made performance wise for Jaguar. As someone who deals with both Linux and Mac OS X, this review is useless because 10.2 is significantly changed from 10.1.5.
Redo the review using the latest released OS for BOTH platforms and I'll find it worth my time.
Slashdot Mirror
60 Amps? To run a fireplace? Yes I know it takes a lot of power to split water - but my hottub doesn't draw that much power at full blast. Much as I'd love a clean burning fire in my fireplace - drawing 8-9kW to do it is nuts
Yeah - Dell's SX270's apparently had a LOT of motherboards with leaking caps. We just got boxes of motherboards from Dell (well rather FoxConn) to swap them out in the units that hadn't died yet (about 20% already had) That cost someone dearly - hopefully FoxConn and not Dell :)
Simple - Novell is not dumb enough to release the majority of their products as 'Suse only' They know RedHat has a huge installed base. Sure they want to build support for Suse distros - but if they go down the path of 'Suse or nothing' then I believe they will fail. In various discussions with Novell regarding Suse (I work in IT at an east cost university), they have been clear that RedHat Ent support for their stuff was important. I think the better context for the question you asked is - where are RedHat's value added services? Novell can give Suse away and still make money off the top level stuff - Novell services on Linux, edirectory, etc just like IBM does. You make the money of the commercial/enterprise apps. WHo cares if you make $10 on the base level OS package you run it on?
Not exactly - the article also says they are hiring a coordinator for the project, etc. So that $500K is covering more than just the HW - its covering the staff and programming needed to support the iPods and get content created for them. I'm sure in a joint project like this Apple gave them a pretty good deal
I always got a kick out of Dell's advertising about dropping stuff a few feet to test durability, etc
We got a brand new Dell 1750 Dual Xeon 1U server which was going to be our Novell R/W Replica & Login box. I put the versa rails in the rack, about 5ft off the ground. Now anybody who works with Dell's knows the new servers have these nubs on the sides which sit into slots on the extended rails - in other words instead of sliding the server INTO the rails like most servers, you have the rails already extended and set the server down ONTO the rails, into those slots. Then you slide everything into place.
Well, it was late - everybody was gone. But it was a 1U box - not TOO heavy (but heavy enough) So I hoisted it up and gently set the nubs into the slots - or so I thought. The right rear nub was not seated and it slipped out. The unit pivoted and our brand new 1750 went crashing into the floor below corner first!!!!! I can still picture it in slow motion as it hit the ground corner first, banged off the rack, and then slammed onto the floor.
Man talk about getting a sinking feeling in your stomach. The right rear corner was totally crumpled. In a panick I opened the case expecting to see a motherboard is a shattered corner.
Nope - the motherboard was fine. The power supplies had come out of their connectors - and slid right back in. The drives had come unseated due to the shock and had to be reseated. A couple hours later with pliers, ballpeen hammer, and other assorted tools, I managed to get the case corner bent back into what was close to normal. All the internals looked ok.
I booted up the system - nada. The 'Processor mismatch' LED was lit on the board. Ugh. Figured I'd cracked a CPU or worse. Then I noticed one of the heatsinks was ever so slightly higher than the other. I unhooked the retainers and found one of the processors had come OUT of the ZIF socket and was being held on top of the socket by the retaining clip. I could only imagine what the CPU had done to itself with its pins making intermittent contact with the socket below while power was on.
Well, after gently getting the CPU off the heatsink without cracking it (it was stuck to it by the heat paste), I reinserted the CPU, applied new paste, and reinstalled the heatsink.
Damn thing booted right up and has run without issue ever since - going on 6 months now. All diags, hard drives included, passed with flying colors.
Talk about dodging a bullet! Built Dell Tough!
Ah - well man they need to be clearer about it - the phrase makes it sound like they pulled out MySQL support. The Changelog mentions the library - but even it is really brief. I always thought PHP used your local libraries anyway - I didn't realize it came with them in 4.x
Maybe we can use statistical techniques on the client side to help the editors avoid duplicate stories.
Read about it a couple days ago!
That said, since this is FC - you CAN get redundancy if you need it. Buy 2 XRaids, RAID5 them, and then use RAID 1 in software (which is often faster than in HW anyway) This will ensure you have connectivity regardless. You are in effect clustering your RAID volumes which is done often (Think of it as RAID 5+1)
Considering what you would pay for an equivalent SCSI array - it still works out to be a good deal.
But - the trick is how often do controllers fail? Every thing else is hot swappable. You can get a parts kit which has just about every replaceable part, including the controller board. So yes, a controller failure drops your array, but getting it back up could be as easy as swapping controllers - so long as teh array itself isn't corrupt. Of course I've seen redundant SCSI arrays corrupt when a controller fails and hte other picks up - shouldn't happen, but it does.
They show a std config that allows you to hook it up to any FC switch so it better be.
They are claiming just over 200MB/sec with 14 drives which is impressive - granted this is probably RAID 0, but still, most of these FC to IDE boxen rate around 160MB.
So I think this is a score for Apple - its hard to find true ATA RAID boxen with this kind of redundancy. That may change - but right now......
The fact that our government would even consider such laws is monumentally scary. Why do Republicans believe that govenment oversight is such a bad thing? Did you notice that the only requirement was a group being designated a terrorist organization by the Attoreny General You can't be serious! One man could simply wipe out a group of people's citizenship - where are the checks and balances?
What kills me is how they sell this stuff. "Oh - so you think someone raisin gmoney for Al Queda shouldn't have their citizenship stripped?", etc, etc, etc. No - they shouldn't - try them, imprison them, but you can't honestly think stripping someones citizenship so easily is a good thing.
It is amazing how a group that believes Muslims shoudl rule the world knocked down the WTC and thus allowed Republicans to lay the ground work to rule the US for geenrations with tatics the communists would have used. How ironic and sad that my country is being taken over by conservative and religious zealots and nobody seems to care because it might, just might, allow them to prevent a terrorist attack (yeah right)
Sure - but lets be realistic - if you buy an XBOX and mod it - woudln't you still want to play some of the games> MS will break even at worst overall among mod chippers I'd think.
Does IE have a custom TCP layer in it?
You're kidding right? IE is not some stadn alone program. It has MANY links into low level microsoft stuff where it is 'part' of the WIndows OS. This was the whole arguement of M$'s lawyers, that IE couldn't be removed easily.
So it wouldnt' surprise me if IE had access to some special stack API to pull stuff like this. Would not surprise me at all.
Mozilla does this now, sort of. If the web page includes specific tags, Mozilla will pre cache those links to give a speed boost. BUT - since it requires tags, its something the web site can enable on a link by link basis
You obviously have no clue about networking. keep-alives are implemented at a MUCH higher level, using a keep=alive header to keep the connection open.
The sequences described here are low level packet tweaks which are not RFC compliant at all. They leave connections in a half closed state in case another non RFC compliant request comes in.
SO what happens? It makes IE requests complete faster on IIS, but non IE requests slower due to an extra handshake due to the connection being half closed.
Isn't that the damned truth! I've had a Dell Inspiron for 3 years now that has 1600x1200 LCD screen that looks awesome! Why can't I get one on my desktop. 1280x1024 just doesn't cut it for an OS (*cough*Linux*cough*) with decent graphics in the desktop :) Only XP looks good at low resolutions :)
Burn karma Burn!
ROFLMAO!
So I was surprised reading the review to see the Adaptec and 3Ware neck and neck in the RAID 5 area. 3Ware's usually have no competition in RAID-5 since their firmware and HW rock.
Then I found out WHY they were so close:
The 3Ware cards are 64-bit cards while the Adaptec's are only 32-bit. 3Ware cards can hit 70MB/sec writing and over 150MBsec reading with 8HD's! If they ever get to 66MHz, I expect their performance to go even higher.
If you want to see better benchmarks that fit with reality, check out the XBit Labs Review
Wait for the SN41 which will be nforce2 based - the benchmarks rock - this will be a sweet system, if they EVER release it!
The latter is understandable - a whole lot of /. folks just realized they need to brush up on TCP/IP theory - and that's a good thing. I know I pulled out my cheat sheets while reading his presentation.
But the former is just plain annoying. Dan has done some really impressive work, using a very mature system in innovative ways. What did you expect? That he wrote some killer app that would make you rich during the IPO? This is great stuff - some of which doesn't have real world applicability (right now anyway), but so what? He's doing research into what CAN be done. I work in IT at a large research university and it really brings home the importance of research for research's sake. Others will come up with commercial applications where appropriate. But research is pushing the boundaries of existing knowledge or delving into completely new areas. For the sake of knowledge and learning.
That said, for all of you saying 'this isn't new' or 'it's no big deal till they write scripts for the script kiddies' what crack are you on? In addition to making my head spin this early in the morning, Dan's presentation and ideas sent a shiver down my spine. I administer an academic network which means no firewall. Dan's ideas, which I could use for good, can also be used for evil. Easily. This kind of stuff is scary.
Think about how much time, bandwidth and effort CodeRed wasted trying to spread itself probing systems that were not web servers. Imagine using this scanning technology as an opening salvo to a new exploit attack via port 80. BANG! Your network security folks sit up with a start as your Class B just got hammered hard. But it was over in 10 seconds. You look into it, but aren't really sure what it was. But now the attacker knows EVERY SINGLE HOST on your network running something on port 80. You (and the rest of the network) just got infected that much faster. Yes, previous papers already theorized this was possible (Warhol Worm, etc) But this makes it even scarier. A two stage worm could really blow things away. The first stage uses ultra fast scanning to build hosts responding to a given port. These first stage hosts develop into a network gathering available hosts to hit based on these ultra quick scans and then fire off stage two infections with pre-seeded network lists most likely to be vulnerable or offer the most targets.
Hell, the second stage would be WELL underway by the time most network security admin's pagers went off.
I tip my hat to Dan - this is great stuff with many useful applications, even if some are less than savory.
This, sir, was genius. After reading your presentation at 5AM and not having my head explode, seeing this made me laugh out loud. I'd love to see the look on some webmaster's face trying to figure out why their obscure online store got so much traffic in a 4 hour window their server crashed.
"Linkcat? Whats that? Is Radio Shack giving away useless toys again? Who are all these geeks and why did they crash my store? Hey Lloyd, we better quadruple our stock of scissors - don't ask!"
Redo the review using the latest released OS for BOTH platforms and I'll find it worth my time.