How to improve API INTBAL performances

2 possibilities :

1) use commandes OPN et CLS commands so :
   OPN + CRE + CRE + Â… + CLS
-> optimization on OPEN / CLOSE XCF  

2) perhaps more efficient, use commands SLW and CMT  
    creation of a session via SLW,  transfer commands deposit, and finally CMT requests commit  :
   SLW + deposits (CRE + CRE Â…) + CMT
-> send of a flow of requests to mailbox, and the set is validated only on end command CMT (Commit)

More details in MVS Interpel documentation