Date: Sat, 18 Dec 1999 13:44:59 -0600 (CST) From: Kevin Day <toasty@dragondata.com> To: hackers@freebsd.org Subject: Practical limit for number of TCP connections? Message-ID: <199912181944.NAA68434@celery.dragondata.com>
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I've started a side project that I'm trying to figure out how to scale. The end result will be a test-based realtime chat (IRC, java, or otherwise) that will bring very large crowds. You wouldn't believe how many geeks will show up on IRC for a TV/Movie star.... even lessor known ones. I've found that a poorly advertised event with a not-so-famous actress can draw 3-5 thousand people, easily. If I'm able to make this grow, I'm sure that number will go much higher. What's the practical number of TCP connections per server? Is there an easy guideline for how ram the kernel will be taking per connection/route/socket/fd/etc? My next interview will be Sunday, but to a much smaller audience than normal, so I'll be able to do some experimenting. Can anyone recommend specific things to watch for, wrt limits and memory use? I'll be watching vmstat carefully, at least. Thanks, Kevin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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