man-db: cache handling

man-db: cache handling

[Yaakov Selkowitz]

Chris,

There are a few issues with the current man-db setup:

1) the cache is not strictly necessary for operation of man(1);

2) mandb -c is quite slow with a large number of manpages (~20min on my
system)

3) generating the cache only during man-db postinstall doesn't help for
manpages updated or added between man-db releases.

Therefore, we need to discuss further how to best handle the man-db
cache.  In the meantime, to help avoid user complaints, could you ship a
new release without the postinstall/preremove?


Yaakov

Re: man-db: cache handling

[Corinna Vinschen]

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Chris, ping?

On Jul 22 11:12, Yaakov Selkowitz wrote:
> Chris,
> 
> There are a few issues with the current man-db setup:
> 
> 1) the cache is not strictly necessary for operation of man(1);
> 
> 2) mandb -c is quite slow with a large number of manpages (~20min on my
> system)
> 
> 3) generating the cache only during man-db postinstall doesn't help for
> manpages updated or added between man-db releases.
> 
> Therefore, we need to discuss further how to best handle the man-db
> cache.  In the meantime, to help avoid user complaints, could you ship a
> new release without the postinstall/preremove?
> 
> 
> Yaakov


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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Re: man-db: cache handling

[waterlan]

Corinna Vinschen schreef op 2014-07-30 17:52:
> Chris, ping?

It is summer vacation time...

> 
> On Jul 22 11:12, Yaakov Selkowitz wrote:
>> Chris,
>> 
>> There are a few issues with the current man-db setup:
>> 
>> 1) the cache is not strictly necessary for operation of man(1);
>> 
>> 2) mandb -c is quite slow with a large number of manpages (~20min on 
>> my
>> system)
>> 
>> 3) generating the cache only during man-db postinstall doesn't help 
>> for
>> manpages updated or added between man-db releases.
>> 
>> Therefore, we need to discuss further how to best handle the man-db
>> cache.  In the meantime, to help avoid user complaints, could you ship 
>> a
>> new release without the postinstall/preremove?
>> 
>> 

I agree. The indexing should be removed from the post install.

-- 
Erwin Waterlander
http://waterlan.home.xs4all.nl/

Re: man-db: cache handling

[Corinna Vinschen]

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On Aug  3 22:36, waterlan wrote:
> Corinna Vinschen schreef op 2014-07-30 17:52:
> >Chris, ping?
> 
> It is summer vacation time...

True.


> >On Jul 22 11:12, Yaakov Selkowitz wrote:
> >>Chris,
> >>
> >>There are a few issues with the current man-db setup:
> >>
> >>1) the cache is not strictly necessary for operation of man(1);
> >>
> >>2) mandb -c is quite slow with a large number of manpages (~20min on my
> >>system)
> >>
> >>3) generating the cache only during man-db postinstall doesn't help for
> >>manpages updated or added between man-db releases.
> >>
> >>Therefore, we need to discuss further how to best handle the man-db
> >>cache.  In the meantime, to help avoid user complaints, could you ship a
> >>new release without the postinstall/preremove?
> >>
> >>
> 
> I agree. The indexing should be removed from the post install.

Yes, that seems a bit too heavy for the postinstall.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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Re: man-db: cache handling

[Yaakov Selkowitz]

On 2014-07-22 11:12, Yaakov Selkowitz wrote:
> There are a few issues with the current man-db setup:
>
> 1) the cache is not strictly necessary for operation of man(1);
>
> 2) mandb -c is quite slow with a large number of manpages (~20min on my
> system)
>
> 3) generating the cache only during man-db postinstall doesn't help for
> manpages updated or added between man-db releases.
>
> Therefore, we need to discuss further how to best handle the man-db
> cache.  In the meantime, to help avoid user complaints, could you ship a
> new release without the postinstall/preremove?

Chris,

I'm hoping you're just on vacation atm.  Because of the continued user 
complaints, I went ahead and released a -2 without the cache 
postinstall/preremove.  Some missing runtime deps have also been 
reported and are fixed on sourceware.  Please resync with the following 
in order to avoid any regressions:

https://sourceforge.net/p/cygwin-ports/man-db/


Yaakov