В Sat, 9 Mar 2013 09:54:13 +0100 todd rme пишет:

On Sat, Mar 9, 2013 at 7:55 AM, Koenraad Lelong wrote:

...

Hi,

I just got a new laptop. It seems to contain a "flash cache" device. That is a SSD drive to cache disk-IO, so my googling tells me. I didn't find if linux really supports this, although I saw something about servers. Anyone has more information ? Will OS12.2/12.3 support this out of the box, or do I need to tweek ?

Regards,

Koenraad Lelong.

If you are talking about what I think you are talking about then no, Linux does not support it, and never will. Linus has flat-out said he thinks it is bad technology.

It would be helpful if you a) explained what you think OP was talking about and b) gave link to Linus statement.

I am frankly shocked that new laptops have it, I thought they gave up on the idea years ago.

All enterprise class storage today offers SSD caching as primary means to increase performance without requiring insane number of spindles. I am interested who are "they" you refer to. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

В Sat, 9 Mar 2013 11:23:36 +0100 todd rme пишет:

On Sat, Mar 9, 2013 at 11:07 AM, Andrey Borzenkov wrote:

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В Sat, 9 Mar 2013 09:54:13 +0100 todd rme пишет:

...

On Sat, Mar 9, 2013 at 7:55 AM, Koenraad Lelong wrote:

...

Hi,

I just got a new laptop. It seems to contain a "flash cache" device. That is a SSD drive to cache disk-IO, so my googling tells me. I didn't find if linux really supports this, although I saw something about servers. Anyone has more information ? Will OS12.2/12.3 support this out of the box, or do I need to tweek ?

Regards,

Koenraad Lelong.

If you are talking about what I think you are talking about then no, Linux does not support it, and never will. Linus has flat-out said he thinks it is bad technology.

It would be helpful if you a) explained what you think OP was talking about and b) gave link to Linus statement.

http://en.wikipedia.org/wiki/Turbo_Memory

OK, thank you. Yes, this is not supported by Linux today.

Intel Turbo Memory is a technology introduced by Intel Corporation that uses NAND flash memory modules to reduce the time it takes for a computer to power up, access programs, and write data to the hard drive.

...

...

I am frankly shocked that new laptops have it, I thought they gave up on the idea years ago.

All enterprise class storage today offers SSD caching as primary means to increase performance without requiring insane number of spindles. I am interested who are "they" you refer to.

from the above article: A review in AnandTech largely concurred with some OEM criticism finding that "it basically does nothing for the user experience".[9] HP refused to use the technology.[10] Ars Technica wrote in 2009 that Turbo Memory "never took off",[11] and CNET similarly pronounced that it was "never widely adopted",[12] because "Turbo Memory (and Turbo Memory 2.0) wasn't cheap, and it definitely wasn't worth the cost."[13]

In 2009 Intel had announced the successor to Turbo Memory for the 5-Series mobile chipsets, codename Braidwood. However, the series was launched without this technology. In 2011, The Register wrote "I think we can say Braidwood has sunk without trace."[14]

Thanks. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On 3/9/2013 11:47 AM, Cristian Rodríguez wrote:

El 09/03/13 03:55, Koenraad Lelong escribió:

...

Hi,

I just got a new laptop. It seems to contain a "flash cache" device. That is a SSD drive to cache disk-IO, so my googling tells me. I didn't find if linux really supports this, although I saw something about servers. Anyone has more information ? Will OS12.2/12.3 support this out of the box, or do I need to tweek ?

As you can see, your post has generated much speculation due to the lack of information on what precisely you mean for "flash cache"

It could be "Intel Turbo Memory" however in that case the laptop is not really "new" in the sense that was not manufactured in the last 6 months at least.

Hmm. I have a brand-new Samsung laptop NP700Z7C-S01US that has a flash drive described in the specs along with the main HD as "1 TB with ExpressCache™ Technology, 8GB". It shows in both Windows and suse as a separate hard drive. I've made no effort to use it myself. Might not he be referring to something like this? Is this the same as the "internal hard drive cache" mentioned earlier? John Perry -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

Op 09-03-13 17:47, Cristian Rodríguez schreef:

El 09/03/13 03:55, Koenraad Lelong escribió:

...

Hi,

I just got a new laptop. It seems to contain a "flash cache" device. That is a SSD drive to cache disk-IO, so my googling tells me. I didn't find if linux really supports this, although I saw something about servers. Anyone has more information ? Will OS12.2/12.3 support this out of the box, or do I need to tweek ?

As you can see, your post has generated much speculation due to the lack of information on what precisely you mean for "flash cache"

It could be "Intel Turbo Memory" however in that case the laptop is not really "new" in the sense that was not manufactured in the last 6 months at least.

Hi, I was indeed surprised with the reactions. I really can't tell more. In the spec's I see : Flash-cache 24 GB mSATA If anyone is interested, it's a HP Elitebook 8470w (LY543EA). Original BIOS dates from half 2012. So the laptop is not that old, technically. I installed OS12.2 on it. At some point the installer says something about "Matrix Storage Manager compatible system. Do you wich to use the raid ?" I tried both options, one seems not to work (this gives some information that lets me believe some raid is used). With the other option I can install OS on the HD, but installing on the SSD drive does not work. I also had to manually install the ATI-video driver before I had a usable display. Regards, Koenraad Lelong -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org