[syslog-ng] Performance analysis (was Re: UDP packet loss with syslog-ng)

I've run a series of tests against our log server, using loggen-generated logging rates of 100, 1000, 2000, 4000, 8000, 16000, and 32000 messages/sec, and measured the results for each rate using socket buffer sizes ranging from 128KB to 16M. The results show, essentially, what buffer size you need to meet a target rate of message logging. So I'm happy now, and I'm getting the sort of rates I expect to be able to support. I figured other folks might like the data. I've put the raw data online as well as a graph of the results: http://drop.io/syslog_ng The graph shows so_rcvbuf() size along the X axis, and packet loss along the Y axis.