On Tue, 13 May 2014 14:58:01 -0700, Jon Perryman wrote: >As Tony said, they are all WTO messages. JES decides where it wants to put the >message (or not do anything with it).
>I suspect that some WTO messages are never written in USS as opposed to not >being captured. I suspect that IBM disabled them for a reason.UNIX does so >much allocation that it could easily flood the SSI (WTO's). I can image that >issuing a make command would produce ton's of alloc / dealloc. > Indeed. Lately I did a "cp" of a couple hundred-member PDSE to a UNIX directory. Merely on elapsed time I can suspect that for each member it was doing ALLOCATE; OPEN; copy; CLOSE; FREE. (And catalog search?) >As for capturing messages USS mesages placing them into the appropriate job, >this may be more than you expect. Some of the problems would be: >1. Which parent/grandparent should receive the messages? >2. Will the messages truly be helpful since it will be more difficult to >associate messages to issuing process. >3. BPXAS can be reused once the processes have terminated. In a busy UNIX >environment, this could either amount to a large number of messages for many >different processes that may or may not be related. > This could be a problem with any child process that writes to a descriptor inherited from a parent process. AFAIK, it has been solved; perhaps as simply as by not reusing the address space until all such descriptors are closed. >Maybe a better alternative would be to use BPX_SHAREAS to share the address >space with related processes but it still leaves the problem where address >space reuse with unrelated processes. I'm not trying to discourage you in >doing. Just trying to make sure you know about some of the hurdles. > Writing such messages to a suitably propagated descriptor might be an effective alternative to S/360-think which appears to be the current approach. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
