Message-Id: <199710011543.IAA00408@mailhost1.cac.washington.edu> From: "James W DeRoest" <deroest@cac.washington.edu> To: "AST Webpage" <astweb@u.washington.edu> Subject: Lab auth & renew -- update Date: Wed, 1 Oct 1997 08:43:37 -0700
-----Original Message----- From: Steven Jones <noyd@u.washington.edu> To: Yonah Karp <yonah@u.washington.edu> Date: Tuesday, September 30, 1997 4:53 PM Subject: Re: Lab auth & renew -- update
Donn and I have made some improvements to the kerberos interactions on the server which have improved the server throughput significantly. I'd estimate the server can handle about 20 times as many interactions as yesterday for the same amount of time.
Because of the password guessing needed for W95 logons, a failed W95 logon attempt with a good user name and bad eight character password takes about 20 times as much server activity to process as a typical successful logon attempt and consumes about 1 CPU second over 1 wall clock second. Encouraging folks to only use correct logon names and passwords on the W95 boxes would help to avoid degredation in response for those folks logging in with good login names and passwords. I think at this time, the response should be adequate to service 1000+ machines if there are not too many bad logins attempted; and I can add a delay for responses to bad logins to slow them down if that becomes a problem.
-- Steven Jones Computing & Communications 354843, University of Washington E-mail: noyd@u.washington.edu Phone: (206) 543-5852