FDLP

Z39.50 Stress Test on Catalog of U.S. Government Publications

On December 9, 2009, a stress test was conducted on the U.S. Government Printing Office's Aleph production server. The primary function of the test was to monitor and analyze the impact (if any) what a 10,000 record limit in z39.50 would have on the system.

Methodology

External users from five depository libraries conducted searches that would return large results sets, near or over the 10,000 limit, for the duration of the test using a z39.50 client of their choice. Meanwhile, sixteen GPO staff performed tasks in Aleph that they would engage in as part of their normal workday.

Results

The group searching the CGP was the hardest hit in terms of reduced functionality, a concern since the CGP has replaced the print Monthly Catalog as the access point for the public to Federal publications cataloged for the FDLP and the Cataloging and Indexing Program. CGP searchers mainly experienced slow response times that continued to slow down as the end of the test period approached for actions including connecting to PURLs, searching, retrieving results sets and navigating through results, and some failed searches.

Next Steps for Z 39.50 Testing and Access (March 2010-September 2010)

  • New ILS hardware will be installed and tested (March 2010-May 2010). The goal is to increase capacity and improve ability of depository libraries to access CGP records via Z39.50.
  • Aleph version 20 software upgrade (completion projected for July 2010);
  • From March 2010-September 2010:
    • Maintain access only by password to Z39.50 so that only depository libraries continue to have access,
    • Maintain Z39.50 limit of 10,000 records per session while carefully monitoring server loads to ensure other ILS functionality is not compromised;
  • After ILS hardware installation and software upgrade completed, conduct another Z39.50 stress test (August 2010);
    • Evaluate test results and plan for expansion of record limit access for z39.50 access to the Aleph ILS
  • Continue to keep the FDLP community informed of z39.50 plans and developments via the FDLP Desktop

View the complete stress test summary.

News & Events

June 04, 2020
All GPO websites will undergo scheduled maintenance on Saturday, June 6, 2020, between 8:00 a.m. (EDT) and 4:00 p.m. (EDT). During... Read More ...
June 03, 2020
Two new, downloadable handouts are now available from FDLP.gov. The Federal Depository Library Program - This tri-fold FDLP handout... Read More ...
June 03, 2020
GPO’s MetaLib will undergo scheduled maintenance Thursday, June 4, 2020 at 1:00 a.m. through noon (Eastern). During the maintenance... Read More ...
June 02, 2020
Documents relating to the Spring 2020 Depository Library Council Virtual Meeting (April 22) are now available. Council’s... Read More ...
June 01, 2020
FDLP promotional materials are once again available and free to all Federal depository libraries. A wide range of materials is... Read More ...
View All

uva-unc

The FDLP LibGuides Coronavirus Community page has been expanded to include freely accessible Government and non-government information on Coronavirus and related topics such as social distancing, things to do while quarantined, and telecommuting. Take a look, and feel free to submit guides that you have created.

uva-unc

Alicia Kubas, Government Publications and Regional Depository Librarian at the University of Minnesota-Twin Cities, is the new Chair of the Depository Library Council (June 1, 2020 – May 31, 2021).

CALL TO ACTION

Library Call to Action

All forms on FDLP.gov are temporarily disabled while new security policies are configured. Learn more.

covid19 subject heading

A Hot Topic collection on African American History and the Civil Rights Movement has been added to FDLP LibGuides. Feel free to use and share these guides, or submit your own guides.

uva-unc

Access resources for patrons and administrative information for library staff, as well as infographics and images for your library website.

uva-unc

FDLP libraries are certain to receive questions about the 2020 Census from nationwide patrons. GPO has compiled some excellent sources of information to help.

Get Connected to GPO

  • facebook
  • YouTube
  • Twitter
  • booktalks
  • pinterest
  • instagram
  • linkedin30px2