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I guess the most efficient is data import authorities - long files, about 50K, since the performance is maximum and the probability of an error during download is still small.
multitenant test
test performed with file 25K all tetants run at the same time with background activities CICO 20 USERS
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DI with background CICO one tenant
average response time CICO + DATA Import Marc Authorities 20users 1 tenant
| Check-In Controller | 1.610 |
| Check-Out Controller | 1.867 |
CICO without background activities
| Check-In Controller | 0.836 |
| Check-Out Controller | 1.022 |