EnhanceIO, Bcache & DM-Cache Benchmarked

[phoronix]

Phoronix: EnhanceIO, Bcache & DM-Cache Benchmarked

Three different Linux disk caching methods for the Linux kernel were compared: EnhanceIO, Bcache, and DM-Cache. But which of these disk caching methods is the fastest when mixing SSDs and HDDs? Here's some results...

http://www.phoronix.com/vr.php?view=MTM4ODA

[Tobu]

Why the fsck are bcache and EnhanceIO flushing if the upper layers don't request it? Is there a problem with the io stack that is being worked around, or is it entirely superfluous?

[Tobu]

Also, EnhanceIO having lower write latency than the HDD in write-through mode seems suspect.

[eduperez]

I wonder why people keeps adding "confidential information" warnings to their posts to an open mailing list...

[uwgandalf]

Bias perhaps?
Stec Inc made EnhanceIO