The following examples illustrate specific aspects of the madv.so.1 shared object.
Example 2-1 Setting Advice for a Set of ApplicationsThis configuration applies advice to all ISM segments for applications with exec names that begin with foo.
$ LD_PRELOAD=$LD_PRELOAD:madv.so.1 $ MADVCFGFILE=madvcfg $ export LD_PRELOAD MADVCFGFILE $ cat $MADVCFGFILE foo*:ism=access_lwpExample 2-2 Excluding a Set of Applications From Advice
This configuration sets advice for all applications with the exception of ls.
$ LD_PRELOAD=$LD_PRELOAD:madv.so.1 $ MADV=access_many $ MADVCFGFILE=madvcfg $ export LD_PRELOAD MADV MADVCFGFILE $ cat $MADVCFGFILE ls:Example 2-3 Pattern Matching in a Configuration File
Because the configuration specified in MADVCFGFILE takes precedence over the value set in MADV, specifying * as the exec-name of the last configuration entry is equivalent to setting MADV. This example is equivalent to the previous example.
$ LD_PRELOAD=$LD_PRELOAD:madv.so.1 $ MADVCFGFILE=madvcfg $ export LD_PRELOAD MADVCFGFILE $ cat $MADVCFGFILE ls: *:madv=access_manyExample 2-4 Advice for Multiple Regions
This configuration applies one type of advice for mmap() regions and different advice for heap and shared memory regions for applications whose exec() names begin with foo.
$ LD_PRELOAD=$LD_PRELOAD:madv.so.1 $ MADVCFGFILE=madvcfg $ export LD_PRELOAD MADVCFGFILE $ cat $MADVCFGFILE foo*:madv=access_many,heap=sequential,shm=access_lwp