Bringing man-db and libseccomp maintainers into the loop. On 2019-10-31 23:01 -0700, Felix Lechner wrote:
> On Thu, Oct 31, 2019 at 11:33 AM Sven Joachim <[email protected]> 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? In a buster chroot lintian (version 2.15.0) is about seven times faster on the same manpages-dev package, however in sid downgrading lintian or man-db to their buster versions did not help. To track down the problem, I upgraded packages piecemeal from buster to sid in a chroot, and the massive lintian slowdown happened after upgrading libseccomp2 from 2.3.3-4 to 2.4.1-2. Hopefully the man-db and libseccomp maintainers can help here. Cheers, Sven
