Linux Blog

CPU Flags and Meanings

Filed under: General Linux — at 11:38 pm on Tuesday, August 11, 2009

Having a brain that is somewhat comparable to a sift for remembering acronym’s, I’m always asking a friend which (I, probably incorrectly call) CPU extension is for virtualization. So I figured I’d blog about this topic. This page CPU feature flags and their meanings clearly explains each of the flags that may be on your machine, which you can check what your CPU supports by typing:

cat /proc/cpuinfo | grep flags

Secure Virtual Machine. (AMD’s virtualization extensions to the 64-bit x86 architecture, equivalent to Intel’s VMX, both are also known as HVM in the Xen hypervisor.)

So to answer my own question SVM and VMX are what to look for when considering a CPU for virtualization. My laptop supports VMX, but my desktop doesn’t. Considering I’d rather do my virtualization on my desktop, I’ll have to upgrade my CPU. Now all I need to do is find out where to find this information for AMD processors and hope I can get a CPU for my outdated socket type. I don’t even think that it is AM2 :(

Hey, The Linux Blog has Moved Servers!

Filed under: The Linux Blog News — at 6:03 am on Monday, April 13, 2009

Host GatorJust a quick update to let everyone know that The Linux Blog has moved servers. The hosting company I moved to is Hostgator. I was skeptical to move, since I was hosting it off of a shared dedicated server set up with cpanel/WHM reseller accounts, but I think that this will be better in the long run. For example: the price is right, it is faster and I do not have to worry so much about the system administration and hardware upgrades / failures. I get just about as much bandwidth with all the features I got before and a few extra that I couldn’t afford thrown in. All for about the cost of licensing cpanel and whm on their own. The only down side is the little amount of disk space, but if you decide not to be a reseller, you will be fine since they do an unlimited account (just check the fine print as I did on this one.) The really nice thing about the move is the hardware it runs off of (this is from cpanel and verified via ssh)

Processor #1 Vendor: GenuineIntelProcessor #1 Name: Intel(R) Xeon(R) CPU           E5405  @ 2.00GHz

Processor #1 speed: 1994.900 MHz

Processor #1 cache size: 6144 KB

So, Dual Xeon Quad cores that you see above, which equates to quite an amount of CPU power, roughly 16GHz with all cores combined. It has I believe 8GB’s of ram and a ton of disk space which happens to be provided by scsi disks. Hostgator have servers in each of’s data centers, I could go on about them all day but if I were you I’d check their website, its all under the “Company” link at the bottom of the page. You might see some banners up around here from now on and you’re probably smart enough to figure out the rest.

If you’re reading this that means you’re reading it off of the new server. Hopefully all went well and it loaded a little quicker. I’m hoping that there wasn’t any disruption of services, there wasn’t for me except for e-mail services but I think that has something to do with the DNS on the server I was sending the mail from (the old one.) Anyhow I hope you enjoy and if you’re in the market for a new web host use my Hostgator links!

New Laptop

Filed under: Linux Hardware — at 10:06 am on Friday, October 10, 2008

I’m excited because this weekend I’m getting another laptop. I’ve gone through quite a few laptops some of which have been more Linux friendly than others. I have been happy with my last two Toshiba laptops (Portege 4010 and Tecra M2) but this time I am buying a used Lenovo Thinkpad.

I was very happy with my last upgrade, from a 933MHz with 512MB of ram, to a 1.7GHz with 768MB ram that was recently upgraded to 1GB. The performance increase was phenomenal. Now moving from a 1.7GHz to am Intel Core 2 Duo should provide another greatly needed performance increase.

Possibly the Fastest 1U Linux Server Ever

Filed under: Linux Hardware — at 5:58 am on Wednesday, January 16, 2008

eRacks is one of the links that appears in the Google ads on this page. It just so happens that I have experience with eRacks. They have some awesome servers available. I believe they may have the fastest Linux server in a 1U package available for delivery. I’m sure you could custom build something your self, but for the price they are well worth checking out.

My configuration was a TwinServe box, which is basically two computers in one so this may be cheating a little. Anyway, I configured it as follows:

1U TWINSERVE chassis, for dual systems, 900W PS
TWINSERVE dual X7DBT dualCPU Intel Xeon 5300/5100
CPU’s for motherboard 1: 2 x Intel Xeon Quad-Core E5365 3.0GHz 1333FSB CPU Add $2945
CPU’s for motherboard 2: 2 x Intel Xeon Quad-Core E5365 3.0GHz 1333FSB CPU Add $2945
16GB of RAM for each Motherboard
4 1TB Drives (Two for each motherboard)
Debian Etch Preinstalled
and a $25 donation to the OpenSSH Project

Total Price: $13855.00 before taxes shipping and handling. For the price, I think its a steal. Thats two quad core 3.0GHz CPU’s in each motherboard, so (3.0GHz * 4)2. 24GHz per motherboard for a total of 48GHz. 32GB ram, and 2TB of raid+1. This is basically the same thing the Mac’s have in their Mac Pro’s except this is in a 1U Chassis, and there is two motherboards. I configured a Mac Pro, just to see what kind of price they offer, and for comparison. I mean there is no denying that the Mac Pro’s are sexy, but is the cost worth it? Now, I configured these the same, 3.0GHz, 16GB Ram (One Motherboards worth) and two 1TB HD’s. I didn’t want the extra crap that Apple bundles in such as the MightyMouse, Apple Keyboard with Mac OSX and the Superdrive because this is a server. We don’t need any of that. Now, one thing that Apple has our system beat on is the graphics, but again note this is a server, but the graphics could be updated if needed. So, the final thing other than looking at how pretty the case is was the price. To my Amazement it wasn’t too shabby the cost only $8849 but then I remembered that the box I configured was this times two. So to compare Penguins to Apples we would need to double that and add taxes for both of them. Shipping is free so the grand total is: $18,892.62. This is quite a price tag and also a hefty package. Here is the Dimensions for each case:

  • Height: 20.1 inches (51.1 cm)
  • Width: 8.1 inches (20.6 cm)
  • Depth: 18.7 inches (47.5 cm)

The size of the eRacks is a tiny 1U meaning 1″ High X 19″ Width x 705mm Deep. There are so many specs to play with and they are dirt cheap. Take a look at the page, you can find the Twin Motherboard Servers under the special purpose website on their website.

I’d have to get a massive loan to afford something like this. A loan larger than my car payment, but you never know maybe when my cars paid off I can get one. At least I wouldn’t have to finance the $18,000 that Apple would charge me, that would be crazy. $414 a month for the apple with an interest of 5% over 4 years, or our double spec system with the same loan terms for $319.07. A difference of $4556.64 for both of them. That’s one third the cost of another double motherboard dual quad core server. I wonder if by the time the loan would end if I would need to buy another computer or not. Interesting concept but I don’t know if I currently need 48GHz of computing power right now.