Tuning glibc Memory Behavior | Heroku Dev CenterAdditional Resources Home Elements Products Pricing Careers Help Status Events Podcasts Compliance Center Heroku Blog Heroku Blog Find out what's new with Heroku on our blog. Visit Blog Last updated February 12, 2025 Application maintainers may tune application performance and memory use by adjusting the MALLOC_ARENA_MAX environment variable. Recent versions of glibc use multiple memory pools that
