Messages in this thread | | | Date | Tue, 6 Mar 2007 10:10:05 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [patch v2] epoll use a single inode ... |
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On Tue, 6 Mar 2007, H. Peter Anvin wrote:
> Eric Dumazet wrote: > > > > For epoll, I suspect this is harmless : Programs dont allocate epolls fd > > every milli second, but at startup only. > > > > For pipes/sockets, using a 64 bits would be problematic, because sprintf() > > uses a divide for each digit. And a divide is slow. Ten divides are *very* > > slow. > > > > That's true for *any* sprintf(), though. sprintf() converts all its arguments > to 64 bits.
Sigh! We *always* do do_div(), even for the more trivial %x case. Anyway, it does not really matter for the type of dfs will be applied to.
- Davide
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