* Posts by vivekspai

3 posts • joined 11 Jul 2012

Fusion-io server strokers show off 2.6TB RAM extension

vivekspai

Re: Simplifying?

The currently published work was from 2011, and had benchmarks for what we could afford at the time, including the enterprise-grade SATA-connected NAND. It's being compared against swap, not against the consumer-grade stuff. All of those comparisons are like vs like. If you want it summarized, look at logical slide #21 in the slide deck. It shows the gains of the same device using our approach vs swap.

vivekspai

Re: Until it craps out

The approach actually generates _less_ random write traffic than using it as swap.

It also uses DRAM for hot pages, so it's not that every application write is being

written back to the NAND-flash.

The details are in the paper - http://ssdalloc.cs.princeton.edu/technology.html

vivekspai

Re: Simplifying?

The performance is very different because we reorganize writes in a way that swap doesn't (and in some cases, can't).

Details at http://ssdalloc.cs.princeton.edu/technology.html

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