# AMD Unveils Zen 6 IBS Memory Profiler for Linux October 9, 2026 at 11:33 AM > AMD engineer Bharata Bhasker Rao debuts a hardware-based memory profiler for Zen 6 processors to optimize CXL and DRAM data tiering. **AMD** engineer **Bharata Bhasker Rao** unveiled the Zen 6 IBS Memory Profiler at the **Linux Plumbers Conference** 2026 in Prague. This hardware feature samples data memory accesses, providing physical addresses and identifying if data originates from DRAM or CXL. The profiler feeds samples into the pghot kernel subsystem to track hot pages, replacing traditional page table scanning. In XSBench tests with **EPYC 9006 Venice** chips and **CXL 3.1**, the method achieved 4.57x performance over a baseline with no tiering. While Graph500 results improved to 3.17x, Redis saw no gains and NAS BT lagged slightly. The method reduced per-folio promotion costs to 15.8 microseconds, though overall overhead increased by 5%. The pghot patches currently lack virtualization support. [#AMD]() [#Zen6]() #LinuxPlumbers #CXL [#EPYC]() ## Related news ## [AMD Unveils Helion CPU Rack with Zen-6 Architecture]() October 12, 2026 at 12:17 PM ## [AMD Confirms Zen 6 Epyc 9006 LP Verano CPU Details]() October 5, 2026 at 05:02 PM ## [AMD Prepares Sixth-Gen Venice CPUs for Q4 Launch]() October 1, 2026 at 07:50 PM ## [AMD Ryzen Z3 Handheld Chip Details Leak Online]() October 1, 2026 at 12:32 PM ## [AMD Unveils EPYC 9006 'Venice' Zen 6 Processors]() September 29, 2026 at 11:40 AM