Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: DEVFSv50 and /dev/fb? (or /dev/fb/? ???) | Date | 7 Aug 1998 04:24:02 GMT |
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Followup to: <199808061810.OAA00880@jupiter.cs.uml.edu> By author: "Albert D. Cahalan" <acahalan@cs.uml.edu> In newsgroup: linux.dev.kernel > > >> getting, *long wait* that it might have sounded like. I meant that little > >> bit of time spent is unnecessary. Bigger deal for some than others, no? > > > > You really don' t understand that the inode lookup time is not an issue. > > Please really stop using it as and argument in favor of devfs. > > No, you don't understand. It has nothing to do with "ls /dev". > > Many programs need to search through /dev. That includes lilo, the > whole procps package, stuff related to the talk daemon, etc. > > That's not even the worst of it. Every time you open a pty, you need > access /dev. Every time you want /dev/null or /dev/zero, you access /dev. > > The result: general system slowdown. You can't point a finger at > the problem ("we lost 23 seconds RIGHT THERE because /dev was slow") > but you suffer anyway. > > Hey, Linus! It looks like a latency problem. >
This is what the dcache is for.
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