Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!gorodish!guy From: guy@gorodish.Sun.COM (Guy Harris) Newsgroups: comp.unix.wizards Subject: Re: Virtual Memory Filesystem (?) Message-ID: <52309@sun.uucp> Date: 6 May 88 18:54:31 GMT References: <3711@lynx.UUCP> <4321@vdsvax.steinmetz.ge.com> Sender: news@sun.uucp Distribution: na Lines: 17 > Another 'feature' is that commands like > cp humongeous-file /dev/null > will take 0 seconds. Almost: Script started on Fri May 6 11:49:27 1988 gorodish$ cat /etc/motd SunOS Release 4.0 (GORODISH) #267: Thu May 5 14:49:36 PDT 1988 gorodish$ time cp /vmunix /dev/null real 0m0.13s user 0m0.03s sys 0m0.08s You *do* have to spend some time starting up the program, opening the file, "mmap"ping the pages, etc..