Measured on a booted Drupal heap: 80,543,744 bytes goes to 39,911,590 raw, so slightly over half
the image is pages that a fresh instance already has. Compression is a SEPARATE and conditional
decision -- elision is free and always correct, compression trades boot CPU for bytes at rest and
only pays when the measurement says the bytes are needed.
Drops all-zero pages from a heap.
Measured on a booted Drupal heap: 80,543,744 bytes goes to 39,911,590 raw, so slightly over half the image is pages that a fresh instance already has. Compression is a SEPARATE and conditional decision -- elision is free and always correct, compression trades boot CPU for bytes at rest and only pays when the measurement says the bytes are needed.