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Re: [grouper-dev] Hello from Duke

Chronological Thread 
  • From: Shilen Patel <>
  • To: "blair christensen." <>
  • Cc: GW Brown <>,
  • Subject: Re: [grouper-dev] Hello from Duke
  • Date: Fri, 06 Jul 2007 15:58:33 -0400

blair christensen. wrote:
Gary: Could you clarify what API operations are being performed in the
UI during some of issues? It might help clarify areas in most need of
performance improvements.

On 7/6/07, Shilen Patel
1. Navigating through the stems viewable in the "My Memberships"
section in the UI takes about 2-3 seconds per page.
2. If you are a member of the TAAdmins group, the "Manage Groups"
section takes about 10 minutes to load.
3. If you're not a member of the TAAdmins group and have no memberships
and no privileges, the "Manage Groups" section still takes about 30
seconds to load.
4. Performing a group search takes about 20-30 seconds even if no
results are returned.
5. Listing group members also takes a long time. If a group has X
members and you want to see the first Y members, listing the group
members causes at least X database queries and 2Y LDAP queries.
6. Adding a member to the TAAdmins group takes hours.

7. The xml-import takes about 3-4 days for us and requires 4 GB of
memory allocated to the Java process.

Wow. How many groups/memberships are being added?

The import file is 230 MB (from the 1.1 Grouper export). There are 846,102 memberships, 102,093 groups, and 89,514 stems.

8. The only way to restrict FERPA protected data is to prevent users
from having read access to specific groups and stems that may have FERPA
protected data. It would be nice if Grouper had a way of honoring FERPA
protected data in a way such that if a user has a FERPA flag set in
LDAP, people viewing members of the group would see something like
"Anonymous User" instead of the user's name.

This is a restriction that you would like to have when displaying
memberships in the Grouper UI?

Yes, it would be nice if that option was available when displaying, searching, exporting, etc FERPA protected data.


-- Shilen

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