ssw@cica.cica.indiana.edu (Steve Wallace) (08/22/90)
Our IBM rep is telling me that the RS/6000's AIX can do real time applications. Specifically, he says setting a proceses priority to the highest value will guarantee that process responding to an interrupt within a fixed about of time. This sounds totally off-the-wall to me. Can anyone elaborate on the real time capabilities of the rs/6000 , if any. Thanks, Steven Wallace wallaces@ucs.indiana.edu
woan@peyote.cactus.org (Ronald S. Woan) (08/22/90)
In article <4263@cica.cica.indiana.edu>, ssw@cica.cica.indiana.edu (Steve Wallace) writes: > > Our IBM rep is telling me that the RS/6000's AIX can do real time > applications. Specifically, he says setting a proceses priority to the > highest value will guarantee that process responding to an interrupt > within a fixed about of time. This sounds totally off-the-wall to me. > Can anyone elaborate on the real time capabilities of the rs/6000 , if > any. I think he was referring to the fact that the AIX 3.1 kernel routines/system calls are preemptable... This would seem to guarantee reasonable interrupt response times (though not fixed as some kernel functions have to be protected, of course). Ron -- +-----All Views Expressed Are My Own And Are Not Necessarily Shared By------+ +------------------------------My Employer----------------------------------+ + Ronald S. Woan woan@peyote.cactus.org or woan@soda.berkeley.edu + + othernet Prodigy: XTCR74A Compuserve: 73530,2537 +
RAH@IBM.COM ("Russell A. Heise") (10/10/90)
ssw@cica.cica.indiana.edu (Steve Wallace) writes: > Our IBM rep is telling me that the RS/6000's AIX can do real time > applications. Specifically, he says setting a proceses priority to the > highest value will guarantee that process responding to an interrupt > within a fixed about of time. This sounds totally off-the-wall to me. > Can anyone elaborate on the real time capabilities of the rs/6000 , if > any. Yes, root-owned processes can set themselves to a fixed priority and potentially disable most interrupts. For more information, have your IBM rep search through InfoExplorer on his branch RS/6000 on the search words "setpri" and "getpri". Russ Heise, AIX Technical Support, IBM