Created
March 31, 2014 22:58
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some notes and todos for optimizing the linux load balancer project
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| nginx better with high or low ssl concurrency? high: needs enough to saturate the CPUs, but no point in going higher than that | |
| try high vs low haproxy -> nginx high | |
| try high vs low haproxy -> varnish (this path is only for non-SSL connections, so less important) who cares, but high was better | |
| note: nginx will be limited by the number of connections haproxy sends it, so maybe just set nginx super high, and use haproxy to throttle it. removes that variable from the equation. | |
| dont run irqbalance/ksoftirqd. explicitly assign cpu affinities | |
| net.core.somaxconn is default 128!!!!!!!!!! | |
| do NOT run any firewall | |
| "PRIMARY | |
| stuff | |
| irqs: | |
| external iface: irqs on the last core | |
| internal iface: auto? same core? | |
| haproxy: core sharing L2 cache w/ external iface (second-to-last?) | |
| ssl: all other cores | |
| OTHERS: | |
| internal iface: last cpu | |
| all others: ssl" | |
| do all the cpu assignments using info from ansible | |
| try unix sockets between H-N and/or N-V | |
| try tcp splicing |
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