Bug#943913: lintian: processing packages with many manpages is very slow

[Felix Lechner <felix.lechner@lease-up.com>]

Hi Sven,

On Thu, Oct 31, 2019 at 11:33 AM Sven Joachim <svenjoac@gmx.de> wrote:
>
> Running lintian on packages with many manpages is painfully slow.

I can confirm that it takes a long time:

$ time frontend/lintian ../manpages-dev_5.03-1_all.deb
I: manpages-dev:
cannot-check-whether-usr-share-doc-symlink-points-to-foreign-package
I: manpages-dev: spelling-error-in-manpage
usr/share/man/man3/fgetws.3.gz "permit to" "permit one to"
I: manpages-dev: spelling-error-in-manpage
usr/share/man/man3/gethostbyname.3.gz "permits to" "permits one to"
I: manpages-dev: spelling-error-in-manpage
usr/share/man/man3/inet_net_pton.3.gz pres press
I: manpages-dev: spelling-error-in-manpage ... use
--no-tag-display-limit to see all (or pipe to a file/program)
W: manpages-dev: manpage-has-errors-from-man
usr/share/man/man2/ioctl_list.2.gz 730: warning [p 8, 2.7i]: cannot
adjust line
W: manpages-dev: manpage-has-errors-from-man
usr/share/man/man2/syscall.2.gz 200: warning [p 2, 5.5i]: cannot
adjust line
N: 3 tags overridden (3 info)

real    0m50.609s
user    3m38.614s
sys    0m16.174s

In a first attempt to get to the issue, I reverted commit 067ec6cb but
it took about the same:

real    0m51.193s
user    3m39.174s
sys    0m15.833s

Do you have older measurements to which we can compare this performance?

Kind regards,
Felix Lechner