I'm doing some benchmarking on our new Rackspace frontend machines (8 core, 16GB) and running into some problems with the Unix domain socket setup. At high request rates (on simple pages) I'm getting a lot of HTTP 502 errors from Nginx. Nothing shows up in the Unicorn error log, but Nginx has the following in its error log:
2009/09/17 19:36:52 [error] 28277#0: *524824 connect() to unix:/data/github/current/tmp/sockets/unicorn.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 172.17.1.5, server: github.com, request: "GET /site/junk HTTP/1.1", upstream: "http://unix:/data/github/current/tmp/sockets/unic orn.sock:/site/junk", host: "github.com" This problem does not exist with the nginx -> haproxy -> unicorn setup. Thinking this might be a file descriptor problem, I upped the fd limit to 32768 with no luck. Then I tried upping net.core.somaxconn to 262144 which also had no effect. I thought I'd ask about the problem here to see if anyone knows a simple solution that I'm missing. Perhaps there is an Nginx configuration directive I need? Thanks. Unicorn rocks! Tom -- Tom Preston-Werner GitHub Cofounder http://tom.preston-werner.com github.com/mojombo _______________________________________________ mongrel-unicorn mailing list [email protected] http://rubyforge.org/mailman/listinfo/mongrel-unicorn
