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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-08-24 13:45:08


FYI. The MTT database will be down for a few hours on Monday
morning. It'll be replaced with a much mo'better version -- [much]
faster than it was before. Details below.

Begin forwarded message:

> From: Josh Hursey <jjhursey_at_[hidden]>
> Date: August 24, 2007 1:37:18 PM EDT
> To: General user list for the MPI Testing Tool <mtt-users_at_open-
> mpi.org>
> Subject: [MTT users] MTT Database and Reporter Upgrade **Action
> Required**
> Reply-To: General user list for the MPI Testing Tool <mtt-
> users_at_[hidden]>
>
> Short Version:
> --------------
> The MTT development group is rolling out newly optimized web frontend
> and backend database. As a result we will be taking down the MTT site
> at IU Monday, August 27 from 8 am to Noon US eastern time.
>
> During this time you will not be able to submit data to the MTT
> database. Therefore you need to disable any runs that will report
> during this time or your client will fail with unable to connect to
> server messages.
>
> This change does not affect the client configurations, so MTT users
> do *not* need to update their clients at this time.
>
>
> Longer Version:
> ---------------
> The MTT development team has been working diligently on server side
> optimizations over the past few months. This work involved major
> changes to the database schema, web reporter, and web submit
> components of the server.
>
> We want to roll out the new server side optimizations on Monday, Aug.
> 27. Given the extensive nature of the improvements the MTT server
> will need to be taken down for a few hours for this upgrade to take
> place. We are planning on taking down the MTT server at 8 am and
> we hope to have it back by Noon US Eastern time.
>
> MTT users that would normally submit results during this time range
> will need to disable their runs, or they will see server error
> messages during this outage.
>
> This upgrade does not require any client changes, so outside of the
> down time contributors need not change or upgrade their MTT
> installations.
>
> Below are a few rough performance numbers illustrating the difference
> between the old and new server versions as seen by the reporter.
>
> Summary report: 24 hours, all orgs
> 87 sec - old version
> 6 sec - new version
> Summary report: 24 hours, org = 'iu'
> 37 sec - old
> 4 sec - new
> Summary report: Past 3 days, all orgs
> 138 sec - old
> 9 sec - new
> Summary report: Past 3 days, org = 'iu'
> 49 sec - old
> 11 sec - new
> Summary report: Past 2 weeks, all orgs
> 863 sec - old
> 34 sec - new
> Summary report: Past 2 weeks, org = 'iu'
> 878 sec - old
> 12 sec - new
> Summary report: Past 1 month, all org
> 1395 sec - old
> 158 sec - new
> Summary report: Past 1 month, org = 'iu'
> 1069 sec - old
> 39 sec - new
> Summary report: (2007-06-18 - 2007-06-19), all org
> 484 sec - old
> 5 sec - new
> Summary report: (2007-06-18 - 2007-06-19), org = 'iu'
> 479 sec - old
> 2 sec - new
>
> _______________________________________________
> mtt-users mailing list
> mtt-users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/mtt-users

-- 
Jeff Squyres
Cisco Systems