See an implementation of periodical vacuum in Liferea, depending on current fragmentation: http://liferea.git.sourceforge.net/git/gitweb.cgi?p=liferea/liferea;a=commitdiff;h=80b89a1e12a4b788cf5a6ec8ae13fe8d593f60f0;hp=4b3738bf46e3941073b1600cd61cd4af5310769b
See an implementation of periodical vacuum in Liferea, depending on current fragmentation: http:// liferea. git.sourceforge .net/git/ gitweb. cgi?p=liferea/ liferea; a=commitdiff; h=80b89a1e12a4b 788cf5a6ec8ae13 fe8d593f60f0; hp=4b3738bf46e3 941073b1600cd61 cd4af5310769b