Hi



   I am runing  a cpp process say "ABC"  which uses system() function . 
   inside system running an one external binary say "xyz" (program ) ;

[This external program (xyz)  takes some parameter do process & print 
some output.. meaning comsumes a bit of time .  ]


  Now, my question is how to get the maximum  rate

1 I tried  giving  system("xyz & " ) ;  /////.. run external program in 
the background  ; this will make return of system .

Getting execution rate ~ 25 sec

2 I tried  giving  system("xyz  " ) ;  meaning .. run external program 
in the background  ; this will make return of system .

Getting execution rate ~ 14 sec


3   I tried running many instances of ABC    .. now execution rate got
decreased to ~15 per process


I tried using vfork , ..execl .. & all but some how system gives the 
better response and easy way out .. ..

Main overservation is  - System comsumes lot of time ..  ( even running 
with root )

Now My quiestion is ...  how to increase the performace of the 
process/system() so that for different calling of system is fast ..
...any configuration file can be changed to do os ..



Thanks in advance
Paras