https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22417 --- Comment #320 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- (In reply to Marcel de Rooy from comment #274)
Completely other observation: Just noticing on my test server that process beam.smp used quite a bit CPU at some point while there was nothing going on in terms of background processes. Googling beam.smp brings you right to such things. Reason for being more cautious?
Same report on IRC with a possible solution: < kohaputti> seems to be around 4-10% on my machine more or less constantly < kohaputti> yes, it is beam.smp < kohaputti> maybe there is some configration we could change < kohaputti> (4-10% on one core) < kohaputti> just installed the rabbitmq stuff because I noticed reset_all needed it < kohaputti> I have the latest version of Koha master as of ~1 hour < kohaputti> lots of sched_yield() syscalls < kohaputti> when I look with strace < kohaputti> https://www.rabbitmq.com/runtime.html#cpu-reduce-idle-usage < kohaputti> adding RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="+sbwt none" to the env vars seemed to do the trick < kohaputti> now the load is around 1-2% constantly < Joubu> which version of rabbitmq? which os? < kohaputti> seems to be debian 9 (from koha-testing-docker) < kohaputti> version of rabbitmq-server is 3.6.6-1 Under D11 (koha-testing-docker), RabbitMQ version: 3.8.9 * Without the config modification I see it around 4.5% rabbitmq 1148 4.5 0.5 3227132 86044 ? Sl 13:10 0:37 /usr/lib/erlang/erts-11.1/bin/beam.smp -W w -K true -A 64 -MBas ageffcbf -MHas ageffcbf -MBlmbcs 512 -MHlmbcs 512 -MMmcs 30 -P 1048576 -t 5000000 -stbt db -zdbbl 128000 -B i -- -root /usr/lib/erlang -progname erl -- -home /var/lib/rabbitmq -- -pa -noshell -noinput -s rabbit boot -boot start_sasl -lager crash_log false -lager handlers [] * With the config modification: % echo 'RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="+sbwt none +sbwtdcpu none +sbwtdio none"' >> /etc/rabbitmq/rabbitmq-env.conf % service rabbitmq-server restart It's around 3% rabbitmq 2646 2.9 0.5 3223728 84124 ? Sl 13:25 0:06 /usr/lib/erlang/erts-11.1/bin/beam.smp -W w -K true -A 64 -MBas ageffcbf -MHas ageffcbf -MBlmbcs 512 -MHlmbcs 512 -MMmcs 30 -P 1048576 -t 5000000 -stbt db -zdbbl 128000 -sbwt none -sbwtdcpu none -sbwtdio none -B i -- -root /usr/lib/erlang -progname erl -- -home /var/lib/rabbitmq -- -pa -noshell -noinput -s rabbit boot -boot start_sasl -lager crash_log false -lager handlers [] Not changed much in my case. -- You are receiving this mail because: You are watching all bug changes.