Thanks Bruce, Tomasz and Keith. Bruce, I checked with the simple AFL you suggested Buy=Sell=Short=Cover=0, and my results were: - First run after starting AB: 5'30" - Subsequent runs: 2'10" - Using local database: 0'23" So indeed, the AFL itself accounts for most of the run-time. Thanks for the tip.
Keith, until he confirms himself, I believe Tomasz confirmed my understanding, ie, that with the source set to "local database", no accesses from the TC2000 database are made. That is, after starting AB, the source must be set to TC2000 to ensure the local database is updated. Afterwards, within the same AB session, the source can be set "local database" to maximise performance. Paul
