Re: how does mmap() work?

["Alexei Pytel" <pytel@xxxxxxxxxx>]

teraspace is an underlying support.
mmap() is a function (one of many) which uses teraspace support

    Alexei Pytel




                                                                                
              
                    "Steve                                                      
              
                    Richter"             To:     <MI400@midrange.com>           
              
                    <srichter@Auto       cc:                                    
              
                    Coder.com>           Subject:     Re: how does mmap() work? 
              
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                    drange.com                                                  
              
                                                                                
              
                                                                                
              
                    05/22/2001                                                  
              
                    02:43 PM                                                    
              
                    Please respond                                              
              
                    to MI400                                                    
              
                                                                                
              
                                                                                
              




 Might I ask, why do you "care" how the mmap() API works?  Is it not enough
 to know the purpose of the API, the parameters (the interface), and the
 results
 that it provides, in order to make good use of this facility?

 Hey Mark,

 This api looks to be an advance for the iseries.  I would like to know how
 it was implemented in order to determine if it will perform well, to
 update my judgement of the quality of ibms technical mgmt. I also want to
 get a feel for how much of a say the ibm tech people have in deciding what
 is added to the os and how much time they were allowed to spend in
 implementing it.

 I dont know much about teraspace and mmap() but I question why both?  Why
 is the teraspace limited to intraprocess while mmap() can work
 interprocess?

 Is teraspace a stopgap that will now be replaced by the newer mmap( )?

 Steve Richter





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