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/dpdk/doc/guides/prog_guide/
H A Dpower_man.rst8 by dynamically adjusting CPU frequency or entering into different C-States.
77 the frequency on the physical core is set to the highest frequency of the Hyper-Thread siblings.
96 * **Freq get**: Get the current frequency of the specific lcore.
142 frequency to safe power.
153 * MED: the frequency is used to process modest traffic workload.
155 * HIGH: the frequency is used to process busy traffic workload.
159 * Training phase. This phase is used to measure the optimal frequency
165 and high frequencies. Each frequency is measured for two seconds.
175 frequency).
219 scale the core frequency up/down depending on traffic volume.
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H A Dprofile_app.rst70 …k counter in user space. Typically it runs at a lower clock frequency than the CPU clock frequency.
71 Cycles counted using this method should be scaled to CPU clock frequency.
79 at CPU frequency. However, access to the PMU cycle counter from user space is
H A Dmetrics_lib.rst186 Once initialised and clocked at the appropriate frequency, these
213 ``rte_stats_bitrate_calc()``. The frequency at which this function
250 Once initialised and clocked at the appropriate frequency, these
H A Devent_ethernet_rx_adapter.rst83 is the relative polling frequency of the Rx queue and is applicable when the
166 event priority, polling frequency of the receive queue and flow identifier
H A Dtimer_lib.rst16 * Timers provide high precision (depends on the call frequency to rte_timer_manage() that checks …
H A Denv_abstraction_layer.rst641 Power management helps to improve the CPU efficiency by limiting the CPU runtime frequency.
H A Dqos_framework.rst500 (e.g. for a CPU frequency of 2 GHz and a 10GbE port,*cycles_per_byte = 1.6*).
/dpdk/doc/guides/sample_app_ug/
H A Dvm_power_management.rst22 - **Accepting requests for frequency changes for a vCPU**
24 - **Performing the change in frequency**
32 performs the frequency change.
374 to CPU frequency scaling.
389 Get the current frequency for the specified core:
545 frequency to the maximum.
743 the frequency is set to medium.
748 the minimum frequency, or the medium frequency
775 to adjust the frequency of a core,
914 - SCALE_UP: Scale up the frequency of this core.
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H A Dl3_forward_power_man.rst36 at the cost of keeping cores active and running at the highest frequency,
48 to set the CPUFreq governor and set the frequency of specific cores.
173 and the algorithm used for frequency hinting is as follows:
175 * If the size of available descriptors exceeds 96, the maximum frequency is hinted.
181 * When the trend counter reached 10000 the frequency hint is changed to the next higher frequency.
192 by scaling up to highest frequency as long as one Rx queue requires.
195 On the other hand, frequency scaling down is controlled in the timer callback function.
253 * -l : optional, set up the LOW power state frequency index
255 * -m : optional, set up the MED power state frequency index
257 * -h : optional, set up the HIGH power state frequency index
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H A Ddist_app.rst10 distributor to the higher frequency core if available.
111 frequency than others. An application note for Intel SST-BF is available,
113 …lders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enhancing-perfor…
116 frequency SST-BF cores, and when starting the application, if high frequency
119 the bottleneck, so this is given first choice of the high frequency SST-BF
/dpdk/lib/eal/windows/
H A Deal_timer.c55 LARGE_INTEGER frequency; in get_tsc_freq() local
59 QueryPerformanceFrequency(&frequency); in get_tsc_freq()
79 elapsed_us.QuadPart /= frequency.QuadPart; in get_tsc_freq()
/dpdk/doc/guides/linux_gsg/
H A Dnic_perf_intel_platform.rst42 You can also use ``dmidecode`` to determine the memory frequency::
102 #. Consider using Turbo Boost to increase the frequency on cores.
H A Denable_func.rst72 …er ``/sys/devices/system/cpu/cpu0/cpufreq`` will not exist, and the CPU frequency- based power man…
/dpdk/doc/guides/eventdevs/
H A Dcnxk.rst167 - ``TIM external clock frequency``
/dpdk/doc/guides/rel_notes/
H A Drelease_19_05.rst203 indicating if it is a high frequency core.
208 pinned to a high frequency core if available.
H A Drelease_16_11.rst146 leading to incorrect frequency scaling. In addition, L3fwd-power application
H A Drelease_21_02.rst36 * Power saving based on frequency scaling through the ``librte_power`` library
H A Drelease_2_2.rst143 Reduced frequency of TX tail pointer updates to the NIC.
H A Drelease_18_11.rst250 to containers and host applications that need to have their cores frequency
/dpdk/doc/guides/howto/
H A Dpvp_reference_benchmark.rst356 CPU: <CPU model>, <CPU frequency>