Re: Suggested dual human/binary interface for proc/devfs

From: Mike Harrelson (mikeh@mindspring.com)
Date: Sat Apr 08 2000 - 22:11:29 EST


On Sat, 8 Apr 2000, Andrea Arcangeli wrote:

> On Fri, 7 Apr 2000, Ed Carp wrote:
>
> > [..] On
> >the other hand, having 100,000 entries in /etc/passwd takes a while to
> >search, and those sorts of things are what people point to when they
> >talk about lack of scalability.
> >
> >I don't know what the answer is - perhaps a replacement library for
> >things like getpwent and friends [..]
>
> Use the `db' format in /etc/nsswitch.conf with lots of users. It uses low
> complexity algorithm for the lookup operation. It only requires you to
> rebuild the db after each update of the ASCII passwd file.

Isn't the nscd daemon suppose to provide fast passwd lookups by caching? I
don't know how fast it is compared to a db lookup, but it doesn't require the
rebuilding of the passwd db everytime a change is made. For large passwd
files, the rebuilding of a db file can be expensive.

-- mikeh

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