pumaのプロセスIDを確認する
$ ps aux | grep puma healthd 2215 0.0 1.9 814768 39676 ? Ssl Feb26 2:41 puma 2.11.1 (tcp://127.0.0.1:22221) [healthd] root 4816 0.0 0.1 58788 2744 ? Ss 20:13 0:00 su -s /bin/bash -c bundle exec puma -C /opt/elasticbeanstalk/support/conf/pumaconf.rb webapp webapp 4857 1.8 1.2 108468 25296 ? Ssl 20:13 0:00 puma 3.12.0 (unix:///var/run/puma/my_app.sock) [current] webapp 4860 17.6 5.9 1347812 119492 ? Sl 20:13 0:03 puma: cluster worker 0: 4857 [current] webapp 4864 17.3 5.7 1345368 114504 ? Sl 20:13 0:03 puma: cluster worker 1: 4857 [current] ec2-user 4918 0.0 0.1 110536 2204 pts/0 S+ 20:13 0:00 grep --color=auto puma
/proc/プロセスID/status
を見る
$ grep Threads /proc/4860/status Threads: 17