On Mon, 23 Aug 2021 23:42:14 +0200 Timo Weingärtner wrote: > The time needrestart takes to analyse processes is to a great amount > influenced by the existence and count of perl processes:
I just profiled needrestart using NYTProf and found that the problem is actually caused by the Module::ScanDeps Perl module: sudo apt install libdevel-nytprof-perl sudo env NYTPROF=trace=2:start=init:file=`pwd`/nytprof.out perl -d:NYTProf /usr/sbin/needrestart sudo chown "$USER" nytprofhtml --open I found that on my system there are a couple of Perl processes and one of them takes a lot more time to scan than the other one. $ ps auxf | grep perl | grep -oE '/usr/s?bin/[^ ]*' | sort -u /usr/bin/parcimonie /usr/bin/perl /usr/sbin/spamd $ time scandeps /usr/sbin/spamd > /dev/null real 0m1.430s user 0m1.350s sys 0m0.080s $ time scandeps /usr/bin/parcimonie > /dev/null # Use of runtime loader module Module::Runtime detected. Results of static scanning may be incomplete. # Use of runtime loader module Module::Implementation detected. Results of static scanning may be incomplete. real 0m8.155s user 0m7.006s sys 0m0.999s Researching the landscape of such tools, I found these other ones: Perl::PrereqScanner Perl::PrereqScanner::NotQuiteLite Perl::PrereqScanner::Lite https://stackoverflow.com/questions/358891/how-do-i-find-the-module-dependencies-of-my-perl-script These all complete a *lot* faster but do not produce the same results and so they are probably *not* useful for this situation. -- bye, pabs https://wiki.debian.org/PaulWise
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