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[D2lnews] Fwd: [Learn@UW Utility] System Performance Follow-up
For those interested, here is what happened on Monday and how it was
resolved. This was sent to me last night, so yesterday refers to
Monday, not Tuesday.
--- "Learn@UW Utility" <email@example.com> wrote:
> Date: Tue, 20 Dec 2005 16:33:07 -0600
> From: "Learn@UW Utility" <firstname.lastname@example.org>
> Subject: [Learn@UW Utility] System Performance Follow-up
> To: email@example.com
> CC: firstname.lastname@example.org, email@example.com
> Site Administrators,
> After a thorough review of yesterday's events, we've concluded that
> performance issue was due to a high volume of requests and accesses
> resource intensive functions (e.g. grade book, quizzing). In fact, we
> saw the highest number of requests than ever before. Historically,
> Mondays are very busy days and yesterday was no exception.
> As the number of requests queued, performance degraded, and
> brought the system to a stand-still. We faced two solutions to
> the immediate problem; recycle the SQL database, or fail over to the
> second clustered database server (referred to as 'secondary' in
> messages). The decision was made to do the latter as it was most
> expedient. There were no errors on the primary server.
> We've previously acknowledged and reported performance issues with
> current version of D2L and will continue to evaluate options for
> handling the anticipated demand. The Learn@UW Performance Project is
> full swing and an interim report was provided to the CIOs last
> (12/15). We remain diligent in monitoring, diagnosing, and solving
> immediate issues.
> We appreciate your patience and understanding during yesterday's
> Please let us know if you have any immediate concerns or questions.
> Learn@UW Utility Service Manager