-----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of dennis bartlett Sent: Tuesday, August 28, 2012 10:20 PM To: U2 Users List Subject: Re: [U2] [ud] Sub-second delay?
Who on earth is going to understand what 'release quantum' (RQM) means? Still, it worked.. and such a clever, 'techie-appealing' concept - tho I don't know that it ever did what I was told it did, it sure sounded good! ------------------ UniBasic User's Guide, Release 2.1, Copyright 1991 by Unidata, Inc. "The original purpose of RQM was to release remaining execution time reserved for a program, allowing other programs to use the time. If a particular program was very computation-intensive, RQM could improve overall system performance. In UniData, this command functions like the SLEEP command. For further information, refer to the SLEEP statement later in this chapter." It is kind-of interesting to note the undecided way to spell Unidata/UniData back then (or that UniData hadn't been registered yet); there are no typo's (by me) in the above... Also note that the SLEEP page of the document makes no mention of RQM... REALITY by Microdata. DATA/BASIC Programming Manual, Series 3.0 - 4.0, Release 4.0, February, 1981 "The time-shared environment of the REALITY system allows concurrent execution of several programs, with each program executing for a specific time period (called a timeslice or quantum) and then pausing while other programs continue execution. The RQM statement causes a one-second sleep, terminating the program's current timeslice. The RQM statement may be used in heavy compute loops to allow increased execution speed of other concurrently executing programs by giving up time. It may also be used to cause pauses." IIRC, the 'M' was measurement; the "measurement" was whatever remained of the processes timeslice. Documentation back to UniVerse 6.3.3 makes no mention of RQM... _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
