On Tue, 20 Dec 2011 09:14:36 -0500, Shmuel Metz wrote: >How did MDF detect the end of a timeslice if not by an interrupt?
That is how it detected the end of a time slice. Early MDF code would dispatch a different domain as soon as a processor entered a wait state. That was determined to cause performance problems, largely due to the effects of cache misses. By the time MDF was delivered to the field, it was changed so that a domain was allowed to run on a processor until its time slice ended. The result was improved performance. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
