Hi, Just in case some of you have doubts about the interest of having Plack for staff interface, here is a result of misc/load_testing/benchmark_staff.pl made with and without Plack: benchmarking WITH Plack: Step 1: staff client main page 4178ms 4.786 pages/sec Step 2: catalog detail page 9991ms 2.001 biblios/sec Step 3: catalogue search 5631ms 3.551 biblios/sec Step 5: patron detail page 7037ms 2.842 borrowers/sec Step 5: patron search page 11800ms 3.389 borrowers/sec Step 6a circulation (checkouts) 8967ms 2.23 checkouts/sec Step 6b circulation (checkins) 13880ms 1.44 checkins/sec all transactions at once 55433ms 3.247 operations/sec (note = tests run with plackup, not with starman, the all transaction at once results would probably be better with starman) benchmarking WITHOUT Plack: Step 1: staff client main page 28576ms 0.699 pages/sec Step 2: catalog detail page 39106ms 0.511 biblios/sec Step 3: catalogue search 55524ms 0.36 biblios/sec Step 5: patron detail page 34610ms 0.577 borrowers/sec Step 5: patron search page 64964ms 0.615 borrowers/sec Step 6a circulation (checkouts) 37907ms 0.527 checkouts/sec Step 6b circulation (checkins) 39129ms 0.511 checkins/sec all transactions at once 138298ms 1.301 operations/sec It appears that the speed improvement is more x3 or x4 than x1.5 as I usually say -- Paul POULAIN http://www.biblibre.com Expert en Logiciels Libres pour l'info-doc Tel : (33) 4 91 81 35 08