Tested 13 June 2007 against the isda-thalia2/3/4 set with unknown backend code, Alfresco Enterprise 2.0.1, and Oracle 10g:

• 1 item: 1.8 seconds
• 10 items, serially: 1.7 seconds per, 17 seconds total
• 100 items, serially: 2.0 seconds per, 208 seconds total
• 100 items, ten threads posting ten items each: 5.3s/58s (load ~4 on 2)
• 100 items, 100 threads with one item each: 40.0s/57s (load ~14 on 2, 4 on 3.)
• 1000 items, 1 thread with 1000 items: continued 2s average.  (Test terminated early.)
• 1000 items, 10 threads with 100 items each: 6.1s/816s (load 8/2)
• 1000 items, 100 threads with 10 items each: 15.6s/192s (load 12/4)
• 1000 items, 10 threads with 100 items each: 6.1s/816s (load 8/2)
• 1000 items, 100 threads with 10 items each: 15.6s/192s (load 12/4.  Alfresco starts breaking at this point, returning "org.alfresco.webservice.util.WebServiceException: Error starting session."

 
Tested 9 July 2007 against the isda-thalia5/6/7 set with backend 717, Alfresco Enterprise 2.0.1 (build 54, schema 41), and Oracle 10g:

\[test data pending collection\] 

• 1 item:
• 10 items, serially:
• 100 items, serially:
• 100 items, ten threads posting ten items each:
• 100 items, 100 threads with one item each:
• 1000 items, 1 thread with 1000 items:
• 1000 items, 10 threads with 100 items each:
• 1000 items, 100 threads with 10 items each:
• 1000 items, 10 threads with 100 items each:
• 1000 items, 100 threads with 10 items each:

Notes on data collection: in all cases times represent the time to complete the item import call from first byte sent to last response byte received.  (For users on a slow network, the upload time may be nontrivial as well.)  For the faster tests results were averaged across several runs but were generally consistent.  Median times were quite close to average times.  Image sets were the same between runs and come from the HST image collection.  Larger images take longer, though not linearly so.