Packages with the mmap use flag

Global definition: Add mmap (memory map) support.

dev-haskell / juicypixels : Picture loading/serialization (in png, jpeg, bitmap, gif, tga, tiff and others)

dev-php / pecl-apcu : Stripped down version of APC supporting only user cache

media-libs / libao : The Audio Output library

media-libs / xine-lib : Core libraries for Xine movie player

  • Use mmap() function while reading file from local disks. Using mmap() will use more virtual memory space, but leaves to the Kernel the task of caching the file's data. mmap() access should be faster, but might misbehave if the device where the file resides in is removed during playback.

net-dns / nsd : An authoritative only, high performance, open source name server

www-misc / zoneminder : Capture, analyse, record and monitor any cameras attached to your system

www-servers / lighttpd : Lightweight high-performance web server

  • Use mmap with files owned by lighttpd. This is a dangerous option as it may allow local users to trigger SIGBUS crashes.