Skip to content
GitLab

i#5411 bbdup mem: Use unreachable heap for per-block data

Merged Derek Bruening requested to merge i5411-bbdup-use-vmheap into master

Switch drbbdup's per-block bookkeeping to use unreachable heap instead of reachable. This data can really add up, taking up half a GB or more on large applications -- which really eats into or exceeds the limited reachable space.

Quick small local test: Before:

                   Basic block fragments generated :              5169
                         Trace fragments generated :               527
              Peak vmm blocks for unreachable heap :               641
                Peak vmm blocks for reachable heap :               336

After:

                   Basic block fragments generated :              5169
                         Trace fragments generated :               527
              Peak vmm blocks for unreachable heap :               757
                Peak vmm blocks for reachable heap :               230

Issue: #5411 (closed)