Running ipmctl show performance in 2LM mode

[Giannos Evdorou]

Hello,

I have a question regarding running the following command:

ipmctl show -performance

in a machine configured in 2LM mode. Do the results include cache hits from DRAM (as DRAM acts as a cache for PMEM) or does it only count reads and writes that happen exclusively on PMEM? Thank you in advance

[Andy Rudoff]

Hi,

The ipmctl show -performance command is showing stats from the PMem module.  So that will not include hits in the DRAM cache since those accesses do not go to the PMem module.

-andy

[Steve Scargall]

To monitor DRAM and PMem performance in Memory Mode or AppDirect, I recommend the following tools:

• PCM - See the 'pcm-memory' command.
  • Look at the NM Hit Rate (Near Memory == DRAM) for Memory Mode
• VTune Platform Profiler
  • Download Link
  • Get Started Guide
  • Detailed User Guide

/Steve