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Re: Adding makemandb as build tool for man.db

On 10/9/18 3:02 AM, Martin Husemann wrote:

> On Tue, Oct 09, 2018 at 09:46:48AM +0100, David Brownlee wrote:
>> On lower powered (and particularly lower memory boxes), the makemandb
>> on first boot after install can run for some time and significantly
>> affect the performance of the system (in extreme cases for several
>> hours).
> It is not so much memory, but slow disk access that makes it painfull.
> Most sparc machines do pretty well, mac68k is a disaster.
> Even if you distribute the database, it will take some serious time on
> each boot to check it is up to date.
> Maybe we should add an rc.conf option to delay it after boot (i.e. sleep
> three hours and only then start the man page check), defaulting to 0 (i.e.
> no delay) on most architectures but make sysinst configure it to a few
> hours on slow architectures.

Maybe add a rc.conf option to disable man page processing
altogether?  Or maybe a "slow system" option that eliminates
most high-CPU or disk-intensive activity at installtionn or
boot?  That's what I'll be doing manually, anyway, by editing
the appropriate rc script(s).

> We should also offer usefull (and documented) slow-systems ssh{d}
> default configurations, even if they are "unsafe" from a modern world's
> PoV.
> Martin

ok, but if it's "unsafe", why use it?  On an internal network,
with slow systems all on the same switch and protected from the
public Internet, there's really no advantage to using ssh/scp
instead of telnet/ftp on slow systems.  I agree that telnet and
authenticated ftp shouldn't be used on systems that are exposed
to the public Internet.  I see some sites (such as ftp.gnu.org)
talking now about eliminating all clear-text protocols, even
anonymous ftp, and that doesn't make any sense, especially for
slow clients.  Besides, properly configured anonymous ftp isn't
any worse than http.


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