real time SMP

real time SMP

Post by icur » Thu, 26 Jun 2003 01:05:48


I wanted to know how the below mentd could be handled on a real-time SMP system.

 - binding a process/thread to a specific CPU ?
 - restricting a CPU's ability to execute some processes ? ie dedicated
 - restricting a CPU from running at all
 - forcing a cpu to run _only_ one process (and its children)
 - getting information about a CPU's state
 - creating/destroying sets of processors, to which processes may be bound




1. Enhanced real time clock and Alpha UP2000 SMP


I realized that if I choose "Enhanced real time clock support" during
xconfig, the second CPU is not actually utilized on Alpha UP2000 SMP
according to xosview.

Has anyone observed this on other SMP motherboards?

I checked this with 2.2.14 and 2.2.15pre17.  It must be a bug in
drivers/char/rtc.c in the kernel.

Without the real time clock support, I am now using "rdate -s <clock
system>" to correct the year 2020 problem.    What function does
"enhanced real time clock support" provide other than true clock
of the system without the help of rdate?


G. Hugh Song


2. Creating Solaris 2.3 X-Terminals?

3. hangs with real time clock enabled on SMP system (Mandrake 6.0)

4. OOPS: 2.4.19 md raid5

5. SMP real-time

6. Multiport Serial Board and PPP

7. Real/Non-real time communication over Ethernet?

8. syn cookies

9. Pentium Pro SMP - scsi disks timing out at boot, only with SMP

10. "Real-Time" Time Display in Console

11. X Server Time is REAL time of day???

12. System time warping around real time problem - please help

13. Mixed Time-Share & real-Time scheduling