Oh I do understand DHCP. What you are talking about is very implimentation specific. Sure, in alot of scearios the pool is smaller than the user base but from my experience that is not usually the case on Cable modem networks.
The "perfect" uniuque visitor count would have to have something like an RFID or SmartCard based unique identifier that you carried with you and was required to use a web browser. Even cookies combined with IP uniqueness would not do it.
Implant an RFID in your palm and have the mouse be the reader.
Actually the oposite should be true. The bigger the pool the better your chances are for getting the same IP. When you release your DHCP lease from the server or it expires before your client renews it the server still has that address assigned to your MAC address. The only difference is the lease is inactive. If there are addresses in a pool that have never been assigned and a new client connects it will use those addresses first. If there are none then it will start checking the inactive leases. It will take one, not sure if it does them in order form oldest expiration or randomly, and ping the address to make sure it is not still in use. If it is not then it assignes it to the new client. If it is in use then it moves on to the next one and marks that address as unuseable. ISC DHCP will revisit unuseable address once it has exausted the inactive pool. Solaris DHCP will not revisit them until they have been marked good again by an admin.
So the longer you are inactive the greater your chances are that you will get a different address and the bigger the pool is the lower your chances are.
The above is of course null and void if the ISP deliberatly expires leases and forces users to new addresses. It has been my experience though that very few do this. Even my dealings with PPoE based DSL has indicated that as long as you stay connected via a keepalive then you will retain the same address for a while. If you restart your router with PPoE you are likely to change though.
I wonder what percentage of people with DSL and Cable do not use a firewall/NAT box?
Yeah, here at Sun there are nearly 40 thousand people that connect through 40-50 different proxy servers. That is a thousand to 1 in the opposite direction the article claims.
And yes, he seems to have no idea how DHCP really works. Even if your lease is expired you will get the same IP address unless the pool has been exausted and your address re-used. I see that as an extremly unlikely thing to happen because it would mean, as you say, that your pool is smaller than your installed base. If you pool is smaller then you will start having issues because x number of customers will always be without a connection because they can't get an address.
Had he mentioned Dialup users then I would be more inclined to agree because you are very likely to get a different address every time you connect.
The article at the Register correctly states that they have just kept there Opteron stuff hidden. Aparently hpcanswers didnt read the whole thing or do any research.
You are using HDMI in place of HDCP. HDMI is simply a physical inteface. It carries the same signaling as does DVI-D with the adition of Audio over some extra wires. DVI and HDMI can very easily be converted to one annother and BOTH support HDCP signaling.
Oh believe me I do recognize that fact. I never said it would get into the kernel just that people would try. Are you trying to say that there are no unethical kernel developers out there? I would find that hard to believe.
There are kernel patches out there that are not in the kernel source tree that people can donwload and apply.
because code that goes into the Linux Kernel has to be GPL-able and OpenSolaris is not.
That won't of course stop someone from putting in things that ahve similar functionality but even this will be a sticky ground to walk on because there are alot of lazy developers out there that will copy the code from OpenSolaris and claim it for there own.
With the Consumer level cards you cannot do DualHead with SLI Enabled. With it disabled however you get access to all of the video ports and could do 4 heads if you want.
and the port works amazingly well for having only been fully integrated into the gate for 3 builds. Actually it worked amazngly well upon integration in b70.
All I can really say is if you have ever use a volume manager before you will rejoice at the ease of zfs.
I have been using it on my main nfs server in my Solaris lab at Sun for quite a while now and it is great.
I have a 1.6tb disk array that is allocated to a single zpool on the system. I can add/subtract drives/arrays to this pool at any time to increade decrease the amount of storage avalable to the pool.
I can then creat, format and mount a zfs filesystem with one single command to the zpool. the filesystem will only consume as much of the zpool as it is actually using.
Running 64 bits and 3.3 volts(not backwards compatable with 5 volt) and up to 133MHz (although it may be speced to go faster, 133 is as fast as I have seen it...)
But yeah, like you said PCI-X is no where close to the same thing as PCI-Express. PCI-Express is a serial channel based bus. Channels are a set speed/width. To get more bandwidth simply aggregate channels.
I would beg to differ about bleeding edge hardware malfunctioning. If bleeding edge hardware did not have stability problems then we would never see multiple revisions of hardware as well as multiple bios releases. Why have a hardware revision when it is perfectly stable unless you are adding features? Rev's cost money and they do it to improve the product.
Im confused, where did I say that a USED pc would be a better choice? Perhaps you need to re-read my comment.
Yet annother disclaimer:
these comments represent my views which may or may not coencide with the views of Sun Microsystems, my employer.
I think the reviewer needs to take into account the target audience of JDS. The reviewer certainly dose not fall into this category.
I have installed JDS 2 on a Emachines 6805 Athlon 64 notebook with almost no trouble. The only issues were ACPI, built in wireless and Video. The video was an ATI Radeon 9600 that was not supported by the version of the XF86 driver in JDS. Simply download the ATI FGL drivers from ATI and install/configure. Worked great. As far as ACPI is concerned your just going to have to disable it. Most mainboard implementations of ACPI are horribly buggy anyways and Linux kernels have not until 2.6.3(read the change logs, almost everything was from Intel and ACPI related) had very good/complete support of it anyways. The built in wireless was something that had windows only drivers and I did not have the time to try the NDIS wrappers tool.
I have people in my office that have JDS2 running with little effort on IBM T40's, Toshiba Tecra M1/S1, Toshiba M100, various desktops including Dell PW650, Tyan K8W based Dual Opterons, HP XW4100 workstations, plus all kinds of misc homebrew machines.
As I believe someone else has pointed out, JDS is not intended to run on the latest hardware, it is designed to run very well on slightly older but much stabler hardware. It is intended to be a corp desktop, easy to deploy from a reference image to tens or thousands of similar machines and then work consistently. How many people need a 3.2Ghz P4 Prescott to run StarCalc? Mozilla? Your certainly not going to game under it.
This really brings up one of my favorite aspects of Linux, its adaptability to different tasks. The Sun JDS "envronment" servers a different purpose than Fedora or Gentoo. It dose several things much better than either of those two do with minimal work on the users part. Sure you can probibily get Gentoo or Fedora to do the same thing that JDS dose but it would take a great deal of work and even more so to make it easily reproduceable.
On a slightly differeny note I do really get tired of all the Sun bashing that goes on. Just as I have grown tired of all the Microsoft bashing the used to go on at the top of Sun. Sun is just a company with a great deal of excellent people working there that generally are working towards a common goal: building better software and hardware that makes peoples lives easier and more enjoyable and have a good time in the process. Sun is not dying. Far from it. They are only becomming stronger.
I must insert this disclaimer: I work for Sun in Solaris OS Engineering. I have for the last 8 monthes and been enjoying every day of it.
remember thought that AMD has a "workstation" version of the Opteron that is lower power than the normal version. I have never actually seen one though. Perhaps that is what they intend it for.
I'm going to take a wild guess and predict that the power supply will be external on this one.
Heat was also the first thing I thought of last night when I saw this.
I want one even though I allready have 4 dual 246's in my ofice.
I think what should be pointed out is that the FX series did not have this big of a performance advantage over it's previous generation. Basically they are leaping much further ahead with the GeForce 6 than they did with the GeForce FX. I'd say that is a very positive thing.
You can get more than 6 in a 1.7" high drive. I have some IBM's that have 8 and I have seen some Seagates that have shoehorned 11 into that form factor.
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Oh I do understand DHCP. What you are talking about is very implimentation specific. Sure, in alot of scearios the pool is smaller than the user base but from my experience that is not usually the case on Cable modem networks.
The "perfect" uniuque visitor count would have to have something like an RFID or SmartCard based unique identifier that you carried with you and was required to use a web browser. Even cookies combined with IP uniqueness would not do it.
Implant an RFID in your palm and have the mouse be the reader.
Actually the oposite should be true. The bigger the pool the better your chances are for getting the same IP. When you release your DHCP lease from the server or it expires before your client renews it the server still has that address assigned to your MAC address. The only difference is the lease is inactive. If there are addresses in a pool that have never been assigned and a new client connects it will use those addresses first. If there are none then it will start checking the inactive leases. It will take one, not sure if it does them in order form oldest expiration or randomly, and ping the address to make sure it is not still in use. If it is not then it assignes it to the new client. If it is in use then it moves on to the next one and marks that address as unuseable. ISC DHCP will revisit unuseable address once it has exausted the inactive pool. Solaris DHCP will not revisit them until they have been marked good again by an admin.
So the longer you are inactive the greater your chances are that you will get a different address and the bigger the pool is the lower your chances are.
The above is of course null and void if the ISP deliberatly expires leases and forces users to new addresses. It has been my experience though that very few do this. Even my dealings with PPoE based DSL has indicated that as long as you stay connected via a keepalive then you will retain the same address for a while. If you restart your router with PPoE you are likely to change though.
I wonder what percentage of people with DSL and Cable do not use a firewall/NAT box?
Yeah, here at Sun there are nearly 40 thousand people that connect through 40-50 different proxy servers. That is a thousand to 1 in the opposite direction the article claims.
And yes, he seems to have no idea how DHCP really works. Even if your lease is expired you will get the same IP address unless the pool has been exausted and your address re-used. I see that as an extremly unlikely thing to happen because it would mean, as you say, that your pool is smaller than your installed base. If you pool is smaller then you will start having issues because x number of customers will always be without a connection because they can't get an address.
Had he mentioned Dialup users then I would be more inclined to agree because you are very likely to get a different address every time you connect.
The article at the Register correctly states that they have just kept there Opteron stuff hidden. Aparently hpcanswers didnt read the whole thing or do any research.
o n/nForce/H8DCE.cfm and it is a quality product.
There AMD64 boards and systems can be found at http://www.supermicro.com/aplus
I personally have one of these http://www.supermicro.com/Aplus/motherboard/Opter
You are using HDMI in place of HDCP. HDMI is simply a physical inteface. It carries the same signaling as does DVI-D with the adition of Audio over some extra wires. DVI and HDMI can very easily be converted to one annother and BOTH support HDCP signaling.
They literally burn a hole in the dye layer creating what apears to a player as a pit but it is not really a pit.
actually Solaris x86 and SPARC has been built from a common source base since v2.4. That is at least 10-12 years ago.
Oh believe me I do recognize that fact. I never said it would get into the kernel just that people would try. Are you trying to say that there are no unethical kernel developers out there? I would find that hard to believe.
There are kernel patches out there that are not in the kernel source tree that people can donwload and apply.
because code that goes into the Linux Kernel has to be GPL-able and OpenSolaris is not.
That won't of course stop someone from putting in things that ahve similar functionality but even this will be a sticky ground to walk on because there are alot of lazy developers out there that will copy the code from OpenSolaris and claim it for there own.
With the Consumer level cards you cannot do DualHead with SLI Enabled. With it disabled however you get access to all of the video ports and could do 4 heads if you want.
SLI = Scaleable Link Interconnect
and the port works amazingly well for having only been fully integrated into the gate for 3 builds. Actually it worked amazngly well upon integration in b70.
All I can really say is if you have ever use a volume manager before
you will rejoice at the ease of zfs.
I have been using it on my main nfs server in my Solaris lab at Sun
for quite a while now and it is great.
I have a 1.6tb disk array that is allocated to a single zpool on the
system. I can add/subtract drives/arrays to this pool at any time to
increade decrease the amount of storage avalable to the pool.
I can then creat, format and mount a zfs filesystem with one single
command to the zpool. the filesystem will only consume as much of the
zpool as it is actually using.
It really is a great system.
'Three Sir!'
Willing to use it? They are using it on a daily basis and some are paying $ for the torture. Damn Caesers Palace for making her their main show.
Running 64 bits and 3.3 volts(not backwards compatable with 5 volt) and up to 133MHz (although it may be speced to go faster, 133 is as fast as I have seen it...)
But yeah, like you said PCI-X is no where close to the same thing as PCI-Express. PCI-Express is a serial channel based bus. Channels are a set speed/width. To get more bandwidth simply aggregate channels.
they also have had overhauls that have reduced the output per clock a fair bit:
the move to a 32 stage pipeline in the prescott core from 20 in northwood is the biggest one.
clock for clock perf is about the same as northwood in most cases but remember prescott has 2x the L2 cache to make up for it's shortcommings.
I would beg to differ about bleeding edge hardware malfunctioning. If bleeding edge hardware did not have stability problems then we would never see multiple revisions of hardware as well as multiple bios releases. Why have a hardware revision when it is perfectly stable unless you are adding features? Rev's cost money and they do it to improve the product.
Im confused, where did I say that a USED pc would be a better choice? Perhaps you need to re-read my comment.
Yet annother disclaimer:
these comments represent my views which may or may not coencide with the views of Sun Microsystems, my employer.
My point exactly.... although I think you put it better than I did.
I think the reviewer needs to take into account the target audience of JDS. The reviewer certainly dose not fall into this category.
I have installed JDS 2 on a Emachines 6805 Athlon 64 notebook with almost no trouble. The only issues were ACPI, built in wireless and Video. The video was an ATI Radeon 9600 that was not supported by the version of the XF86 driver in JDS. Simply download the ATI FGL drivers from ATI and install/configure. Worked great. As far as ACPI is concerned your just going to have to disable it. Most mainboard implementations of ACPI are horribly buggy anyways and Linux kernels have not until 2.6.3(read the change logs, almost everything was from Intel and ACPI related) had very good/complete support of it anyways. The built in wireless was something that had windows only drivers and I did not have the time to try the NDIS wrappers tool.
I have people in my office that have JDS2 running with little effort on IBM T40's, Toshiba Tecra M1/S1, Toshiba M100, various desktops including Dell PW650, Tyan K8W based Dual Opterons, HP XW4100 workstations, plus all kinds of misc homebrew machines.
As I believe someone else has pointed out, JDS is not intended to run on the latest hardware, it is designed to run very well on slightly older but much stabler hardware. It is intended to be a corp desktop, easy to deploy from a reference image to tens or thousands of similar machines and then work consistently. How many people need a 3.2Ghz P4 Prescott to run StarCalc? Mozilla? Your certainly not going to game under it.
This really brings up one of my favorite aspects of Linux, its adaptability to different tasks. The Sun JDS "envronment" servers a different purpose than Fedora or Gentoo. It dose several things much better than either of those two do with minimal work on the users part. Sure you can probibily get Gentoo or Fedora to do the same thing that JDS dose but it would take a great deal of work and even more so to make it easily reproduceable.
On a slightly differeny note I do really get tired of all the Sun bashing that goes on. Just as I have grown tired of all the Microsoft bashing the used to go on at the top of Sun. Sun is just a company with a great deal of excellent people working there that generally are working towards a common goal: building better software and hardware that makes peoples lives easier and more enjoyable and have a good time in the process. Sun is not dying. Far from it. They are only becomming stronger.
I must insert this disclaimer: I work for Sun in Solaris OS Engineering. I have for the last 8 monthes and been enjoying every day of it.
remember thought that AMD has a "workstation" version of the Opteron that is lower power than the normal version. I have never actually seen one though. Perhaps that is what they intend it for.
I'm going to take a wild guess and predict that the power supply will be external on this one.
Heat was also the first thing I thought of last night when I saw this.
I want one even though I allready have 4 dual 246's in my ofice.
I think what should be pointed out is that the FX series did not have this big of a performance advantage over it's previous generation. Basically they are leaping much further ahead with the GeForce 6 than they did with the GeForce FX. I'd say that is a very positive thing.
You can get more than 6 in a 1.7" high drive. I have some IBM's that have 8 and I have seen some Seagates that have shoehorned 11 into that form factor.
I gusee you could say USB(2) is to firewire what WUSB is to Bluetooth. (W)USB are host-based where firewire and bluetooth are host independant.