Hi, I’ve been wondering how requests are balanced across the multiple haproxy instances in multiprocess mode. Because we see some of our 16 haproxy process get more load than the other ones:
14725 root 20 0 162M 100M 1416 R 100. 0.3 4:42.18 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14726 root 20 0 158M 98144 1404 R 100. 0.3 4:06.36 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14724 root 20 0 135M 74916 1368 D 38.0 0.2 3:38.87 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14712 root 20 0 86720 30336 1272 S 13.0 0.1 0:36.20 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14722 root 20 0 98416 35424 1308 S 7.0 0.1 1:02.10 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14721 root 20 0 87748 25152 1328 S 4.0 0.1 0:16.78 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14717 root 20 0 85268 28732 1284 S 3.0 0.1 0:07.17 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14716 root 20 0 85404 28900 1208 S 2.0 0.1 0:11.24 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14718 root 20 0 84792 28244 1208 S 2.0 0.1 0:10.12 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14719 root 20 0 85284 28808 1280 S 2.0 0.1 0:10.13 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14720 root 20 0 87768 25084 1228 S 2.0 0.1 0:21.96 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 18064 root 20 0 110M 2828 1216 R 1.0 0.0 0:00.11 htop 14713 root 20 0 86672 30372 1244 S 1.0 0.1 0:22.60 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14723 root 20 0 142M 82096 1408 R 1.0 0.2 3:37.78 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 14715 root 20 0 85988 29448 1208 S 1.0 0.1 0:06.89 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf 13510 13511 13512 13513 13514 13515 13516 13517 13518 13519 13520 13521 13522 13523 13524 13525 We are doing ssl termination at haproxy 1.5-dev19, our default section: global daemon maxconn 131072 spread-checks 2 stats socket /var/run/haproxy.sock stats bind-process 1 nbproc 16 defaults mode http option splice-response option splice-request option httplog option forwardfor option http-server-close option tcp-smart-accept option tcp-smart-connect timeout connect 5000ms timeout client 30000ms timeout server 300000ms timeout http-request 20000ms bind-process 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Is this a normal behaviour? Best regards, Annika --- Systemadministration Travian Games GmbH Wilhelm-Wagenfeld-Str. 22 80807 München Germany www.traviangames.de<http://www.traviangames.de/> Sitz der Gesellschaft München AG München HRB: 173511 Geschäftsführer: Siegfried Müller USt-IdNr.: DE246258085 Diese Email einschließlich ihrer Anlagen ist vertraulich und nur für den Adressaten bestimmt. Wenn Sie nicht der vorgesehene Empfänger sind, bitten wir Sie, diese Email mit Anlagen unverzüglich und vollständig zu löschen und uns umgehend zu benachrichtigen. This email and its attachments are strictly confidential and are intended solely for the attention of the person to whom it is addressed. If you are not the intended recipient of this email, please delete it including its attachments immediately and inform us accordingly.
