My understanding is that Varnish uses a mmap'd file, but it doesn't re-use the file's contents when it is restarted. Why does Varnish use a mmap'd file instead of just using regular virtual memory (swap) directly? I would think that the operating system would be more eager to write the data to the mmap'd file than it would be to write to swap; on a system where the hot cache entries can be stored on disk, it would seem that the swap-based method would be superior.
(I ask because I am trying to decide which method to use for a back-end system, not to be critical of Varnish's design.) Thank you, Brian _______________________________________________ varnish-dev mailing list varnish-dev@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-dev
