Robert Schmidt
6b37d183ce
set_latency_target() attempts to set keep "low latency" by - writing a specific latency to /dev/cpu_dma_latency - setting manually the minimum CPU processor frequency to be the maximum There is no functionality to undo this after stopping the softmodem(s), and most users are probably not even aware that OAI does this. It is generally preferable to set this beforehand using a governor or by disabling sleep states (as outlined in the tutorial, and in a follow-up commit in the performance tuning docs). The previous mlockall() call, to lock memory to RAM, is retained in a new function. There were additional mlockall() calls, which have been replaced with lock_memory_to_ram(), where necessary.
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef _SYSTEM_H_OAI_
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#define _SYSTEM_H_OAI_
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#include <stdint.h>
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#include <pthread.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/****************************************************
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* send a command to the background process
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* return -1 on error, 0 on success
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****************************************************/
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int background_system(char *command);
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/****************************************************
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* initialize the background process
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* to be called very early
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****************************************************/
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void start_background_system(void);
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void lock_memory_to_ram(void);
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void threadCreate(pthread_t *t, void *(*func)(void *), void *param, char *name, int affinity, int priority);
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#define SCHED_OAI SCHED_RR
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#define OAI_PRIORITY_RT_LOW sched_get_priority_min(SCHED_OAI)
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#define OAI_PRIORITY_RT ((sched_get_priority_min(SCHED_OAI)+sched_get_priority_max(SCHED_OAI))/2)
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#define OAI_PRIORITY_RT_MAX sched_get_priority_max(SCHED_OAI)-2
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void thread_top_init(char *thread_name,
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int affinity,
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uint64_t runtime,
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uint64_t deadline,
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uint64_t period);
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/****************************************************
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* Functions to check system at runtime.
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****************************************************/
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int rt_sleep_ns (uint64_t x);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYSTEM_H_OAI_ */
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