diff options
Diffstat (limited to 'Documentation/sysctl')
-rw-r--r-- | Documentation/sysctl/kernel.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index f0c86fbb3b48..88cc0a02a9ef 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -41,6 +41,7 @@ show up in /proc/sys/kernel: - hung_task_check_interval_secs - hung_task_warnings - hyperv_record_panic_msg +- iso_cpu - kexec_load_disabled - kptr_restrict - l2cr [ PPC only ] @@ -77,6 +78,7 @@ show up in /proc/sys/kernel: - randomize_va_space - real-root-dev ==> Documentation/admin-guide/initrd.rst - reboot-cmd [ SPARC only ] +- rr_interval - rtsig-max - rtsig-nr - sched_energy_aware @@ -100,6 +102,7 @@ show up in /proc/sys/kernel: - unknown_nmi_panic - watchdog - watchdog_thresh +- yield_type - version ============================================================== @@ -438,6 +441,16 @@ When kptr_restrict is set to (2), kernel pointers printed using ============================================================== +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. + +============================================================== + l2cr: (PPC only) This flag controls the L2 cache of G3 processor boards. If @@ -881,6 +894,20 @@ 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. + +============================================================== + rtsig-max & rtsig-nr: The file rtsig-max can be used to tune the maximum number @@ -1143,3 +1170,13 @@ 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. + +============================================================== |