TIZEN Memory Management in Tizen
summary
Tizen integrates Linux kernel features to cut RAM needs: implemented dma-buf import/export in DRM and unified GEM/VB2 pathways so camera V4L2 buffers share with GPU/display without copies, and upstreamed the patches. Using CMA reclaims a 400 MB camera reserve so a web browser runs on 500 MB devices. Switching to dm-fence sync improves rendering (example: 40→50 fps, 55→60 fps). Result: reserved memory falls to <10 MB on a 1 GB build and observed ~840–850 MB free after boot.
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