FusionIO SLC IOdrive Benchmarks

[One_Hertz]

That's interesting. In looking at the "ioXtreme User Guide for Windows" document (version 3 for driver release 1.2.7) - which might not be applicable to the ioDrive (I have no idea) - there is a table that "shows the amount of RAM required per 80GB of storage space, using various block sizes".

In short, the table shows 800MB RAM usage for an "average block size" of 4096 bytes - and 5600MB RAM usage for an "average block size" of 512 bytes.

In general, Windows device drivers acquire either "paged" or "nonpaged" kernel memory. Presumably then the Fusion-io device driver acquires "nonpaged" kernel memory (i.e., basically the physical RAM). I do not know the manner in which its acquires (and perhaps subsequently releases) the RAM that it requires; it might acquire the required RAM (at least some of it) dynamically depending upon its current needs.

You can take a quick look at the Windows Task Manager to see the amounts of "paged" and "nonpaged" kernel memory - although, of course, both of these values reflect the current overall sum of the respective usage by all of the various kernel mode components.

It is a similar idea to the IOxtreme. The IOdrive just requires less RAM (which makes sense since it is a quicker SLC device).

Task manager and the resource monitor are unfortunately not useful. They show static amounts of paged and nonpaged memory no matter the workload of the IOdrive.

I believe it is not used as cache, but rather as a bitmap holder. It reminds me EasyCo's MFT, which does a similar thing. Cache, that small, would not be able to provide sustained 4K speeds, and this thing has 'em.

Yes, I think so too.

should keep you happy for at least a few years.

HAHAHAHA you do not know me very well.

One_Hertz/ Alfaunits,

Are you saying you can’t copy a single file (like an avi) above 500MB/s if the copy is made on or from a drive with Windows installed on it? That sucks beyond believe if true. Is that a Window’s thing? Could you copy a file above 500MB/s it you did it between two drives with no OS on it? How can a benchmark show speeds above 500MB/s if it can’t be achieved in real life? (Benchmarks including WEI)

I do not know if it is windows related. All I know is that there is some sort of limit when copying files between my X25E raid and the iodrive. There is no performance reason for it not to go at 600MB/s.