dear ann, > Sorry for the dumb question, but why do you want to do those > operations in parallel? The SuperServer runs only one thread at a > time, ties a connection to an thread, and uses only one processor. Do > you think it will be faster interweaving n commands than running the > operations sequentially? And of course, the classic architecture has > the same general limitations, except there is a process per > connection. >
no dumb question at all ... to answer you, i do this simple test (on FB super classic, single processor): Create 3 tables Create table TABLE_A(ID VARCHAR(15)); Create table TABLE_B(ID VARCHAR(15)); Create table TABLE_C(ID VARCHAR(15)); ********************** now i do in loop with one single thread, one connection : Start transaction insert Into Table_A(ID) VALUES('<#randomchar>'); // insert Into Table_A(ID) VALUES('<#randomchar>'); // (100 000 loop) insert Into Table_A(ID) VALUES('<#randomchar>'); // commit transaction average Insert time taken for each thread : 0.24 ms total time to insert 300 000 rec: 34.8 seconds ********************** now with 3 different Thread and 3 different connection thread1 Start transaction insert Into Table_A(ID) VALUES('<#randomchar>'); (100 000 loop) commit transaction Thread2 Start transaction insert Into Table_B(ID) VALUES('<#randomchar>'); (100 000 loop) commit transaction thread3 Start transaction insert Into Table_C(ID) VALUES('<#randomchar>'); (100 000 loop) commit transaction average Insert time taken for each thread : 0.12 ms total time to insert 300 000 rec: 18.7 seconds so the parallel are 2 times more faster ! (i was hopping 3 times, but i do the test on a slow sata hard drive and a single processor computer that can explain) so at end the parrallel insert a much more faster (2x) than the sequential insert ! so i thing it's can be usefull that firebird permit us to send to him a "batch of sql" to do, and he will himself execute all the SQLs in parallel in different thread ? thanks for all stéphane > > > > is their any way to execute theses n update in parallele inside one > > connection and one transaction ? > > No. > > Good luck, > > Ann > > [Non-text portions of this message have been removed]