What are the consequences of using a MMC as a swap partition? I think someone's asked this question earlier on in the thread, and there hasn't been a satisfactory reply.

Based on http://lkml.org/lkml/2005/6/1/131 the author suggests that a MMC (or any flash memory for that matter) isn't the best medium for swap files because it has a finite, and from what I understand, relatively small number (someone mentioned 100,000?) of maximum write cycles before it becomes unusable.

The article mentioned above also hints at the possiblity that MMCs don't have self-levelling processors. Is this the case? A quick google can't confirm or deny this.

Can anyone clarify? It would really suck to just have the machine start crapping out because the swap file is randomly corrupted after a couple months of use.

Found this bit of information:

MMC
SanDisk MultiMediaCard and Reduced-Size MultiMediaCard - Product Manual Version 1.3
http://www.sandisk.com/Assets/File/O...RS-MMCv1.3.pdf

1.8 Defect and Error Management (p1-3) - Almost the same as CF
1.9 Endurance (p1-4)
"The SanDisk MultiMediaCard and RS-MultiMediaCard have a typical endurance specification for each sector of 100,000 writes (reading a logical sector is unlimited)."

There's MRAM, but I don't think it's available yet...