Scheduling Class and Priority Configuration
VCS allows you to specify priorities and scheduling classes for VCS processes. VCS supports the following scheduling classes:
- RealTime (specified as "RT" in the configuration file)
- TimeSharing (specified as "TS" in the configuration file)
On Solaris 9, the following classes are supported:
- FairShare (specified as "FSS" in the configuration file)
- FairPriority (specified as "FX" in the configuration file)
Priority Ranges
The following table displays the platform-specific priority range for RealTime, TimeSharing, and SRM scheduling (SHR) processes.
| Platform
|
Scheduling Class
|
Default Priority Range
Weak / Strong
|
Priority Range Using #ps Commands
|
|---|
AIX
|
RT
TS
|
126 / 50
60
|
126 / 50
Priority varies with CPU consumption.
Note On AIX, use #ps -ael
|
|
HP-UX
|
RT
TS
|
127 / 0
N/A
|
127 / 0
N/A
Note On HP-UX, use #ps -ael
|
|
Linux
|
RT
TS
|
1/ 99
|
L-high priority task
N-high priority task
Note On Linux, use #ps -ael
|
Solaris
|
RT
TS
SHR
|
0 / 59
-60 / 60
-60 / 60
|
100 /159
N/A
N/A
Note On Solaris, use #ps -ae -o pri, args
|
|
