Date: Sat, 18 Dec 1999 20:33:30 -0600 From: Dan Nelson <dnelson@emsphone.com> To: Kevin Day <toasty@dragondata.com> Cc: hackers@FreeBSD.ORG Subject: Re: Practical limit for number of TCP connections? Message-ID: <19991218203330.A47909@dan.emsphone.com> In-Reply-To: <199912181944.NAA68434@celery.dragondata.com>; from "Kevin Day" on Sat Dec 18 13:44:59 GMT 1999 References: <199912181944.NAA68434@celery.dragondata.com>
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In the last episode (Dec 18), Kevin Day said: > 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? As a datapoint, the busiest IRC server in 1998 was irc.blackened.com, which peaked at around 8700 simultaneous connections (with a lot more traffic than you're likely to see). I forget whether it was running 2.2.7 or 3.0, but it was definitely FreeBSD, running a standard ircd. -- Dan Nelson dnelson@emsphone.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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