Validating PMFS using DRAM for persistent memory

Ross Zwisler ross.zwisler at
Mon Sep 16 12:19:27 EDT 2013

On Sun, 2013-09-15 at 18:19 -0500, Prashant Saxena wrote:
> Hi All,
> I am trying to benchmark PMFS performance for persistent memory using 
> DRAM. The file in PMFS project reads that "file system has 
> been validated using DRAM to emulate persistent memory". I am curious to 
> know how much delay is injected to emulate persistent memory on DRAM. 
> Also, I wanted to know if I can tweak this delay in the code somewhere.
> Any help is greatly appreciated.
> Thanks,
> Prashant

Hi Prashant,

We don't introduce any delays in PMFS to emulate latency deltas between
different types of memory technologies.  If you run PMFS against regular DRAM
you'll run at full DRAM speed.

- Ross

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