From owner-freebsd-realtime Tue Mar 3 13:51:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA17261 for freebsd-realtime-outgoing; Tue, 3 Mar 1998 13:51:19 -0800 (PST) (envelope-from owner-freebsd-realtime@FreeBSD.ORG) Received: from blackadder.cis.mcmaster.ca (root@blackadder.CIS.McMaster.CA [130.113.128.1]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id NAA17256 for ; Tue, 3 Mar 1998 13:51:15 -0800 (PST) (envelope-from rich@immrc1.Eng.McMaster.CA) Received: from immrc.Eng.McMaster.CA by blackadder.cis.mcmaster.ca with SMTP id AA21727 (5.65c/IDA-1.4.4 for ); Tue, 3 Mar 1998 16:50:53 -0500 Received: by immrc.eng.mcmaster.ca (SMI-8.6/SMI-SVR4) id QAA05739; Tue, 3 Mar 1998 16:51:04 -0500 Date: Tue, 3 Mar 1998 16:51:04 -0500 From: rich@immrc1.Eng.McMaster.CA (Richard Teltz) Message-Id: <199803032151.QAA05739@immrc.eng.mcmaster.ca> To: realtime@FreeBSD.ORG Subject: threads questions Sender: owner-freebsd-realtime@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Dear rt-freeBSDer's, I am interested in using free BSD with real time extensions for a machine controller application. Our application is being ported from a VME / VxWorks based system to a PC based system. We would like to minimize modifications to our existing code. Any help from someone familiar with VxWorks would certainly help alot. The information I need is mostly related to task scheduling and memory protection. Specifically, 1) does rt-freeBSD support threads? if yes to 1), 2) is the thread scheduling preemptive and priority based? (ie: higher priority tasks can preempt lower priority tasks) 3) does the thread scheduling support time sliced (round robin) scheduling at a given task priority level? if no to 1) 4) is process scheduling preemptive, priority based? and finally, 5) where can I get more info on the real time extensions to freeBSD? thanks in advance Rich To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-realtime" in the body of the message