diff options
Diffstat (limited to 'Documentation/admin-guide/sysctl/kernel.rst')
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 0d427fd10941..5b3406a3d76f 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -344,6 +344,16 @@ Controls whether the panic kmsg data should be reported to Hyper-V. = ========================================================= +iso_cpu: (MuQSS CPU scheduler only) +=================================== + +This sets the percentage cpu that the unprivileged SCHED_ISO tasks can +run effectively at realtime priority, averaged over a rolling five +seconds over the -whole- system, meaning all cpus. + +Set to 70 (percent) by default. + + kexec_load_disabled =================== @@ -922,6 +932,20 @@ ROM/Flash boot loader. Maybe to tell it what to do after rebooting. ??? +rr_interval: (MuQSS CPU scheduler only) +======================================= + +This is the smallest duration that any cpu process scheduling unit +will run for. Increasing this value can increase throughput of cpu +bound tasks substantially but at the expense of increased latencies +overall. Conversely decreasing it will decrease average and maximum +latencies but at the expense of throughput. This value is in +milliseconds and the default value chosen depends on the number of +cpus available at scheduler initialisation with a minimum of 6. + +Valid values are from 1-1000. + + sched_energy_aware ================== @@ -1230,3 +1254,13 @@ is 10 seconds. The softlockup threshold is (``2 * watchdog_thresh``). Setting this tunable to zero will disable lockup detection altogether. + + +yield_type: (MuQSS CPU scheduler only) +====================================== + +This determines what type of yield calls to sched_yield will perform. + + 0: No yield. + 1: Yield only to better priority/deadline tasks. (default) + 2: Expire timeslice and recalculate deadline. |