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Diffstat (limited to 'docs/configuration/system/option.rst')
| -rw-r--r-- | docs/configuration/system/option.rst | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/docs/configuration/system/option.rst b/docs/configuration/system/option.rst index e7661492..e029ec96 100644 --- a/docs/configuration/system/option.rst +++ b/docs/configuration/system/option.rst @@ -1,8 +1,8 @@ .. _system_option: -####### -Options -####### +###### +Option +###### This chapter describe the possibilities of advanced system behavior. @@ -36,7 +36,8 @@ HTTP client Several commands utilize curl to initiate transfers. Configure the local source interface used for all CURL operations. -.. note:: `source-address` and `source-interface` can not be used at the same time. +.. note:: `source-address` and `source-interface` can not be used at the same + time. *************** Keyboard Layout @@ -69,15 +70,20 @@ earlier to pin certain interrupt handlers to specific CPUs. We now utilize `tuned` for dynamic resource balancing based on profiles. - .. seealso:: https://access.redhat.com/sites/default/files/attachments/201501-perf-brief-low-latency-tuning-rhel7-v2.1.pdf +.. stop_vyoslinter + +.. seealso:: https://access.redhat.com/sites/default/files/attachments/201501-perf-brief-low-latency-tuning-rhel7-v2.1.pdf + +.. start_vyoslinter .. cfgcmd:: set system option performance < throughput | latency > Configure one of the predefined system performance profiles. * ``throughput``: A server profile focused on improving network throughput. - This profile favors performance over power savings by setting ``intel_pstate`` - and ``max_perf_pct=100`` and increasing kernel network buffer sizes. + This profile favors performance over power savings by setting + ``intel_pstate`` and ``max_perf_pct=100`` and increasing kernel network + buffer sizes. It enables transparent huge pages, and uses cpupower to set the performance cpufreq governor. It also sets ``kernel.sched_min_granularity_ns`` to 10 us, @@ -85,8 +91,8 @@ We now utilize `tuned` for dynamic resource balancing based on profiles. 40%. * ``latency``: A server profile focused on lowering network latency. - This profile favors performance over power savings by setting ``intel_pstate`` - and ``min_perf_pct=100``. + This profile favors performance over power savings by setting + ``intel_pstate`` and ``min_perf_pct=100``. It disables transparent huge pages, and automatic NUMA balancing. It also uses cpupower to set the performance cpufreq governor, and requests a |