Django+celery,配置并发数不生效

Question

Django setting.py

CELERY_RESULT_BACKEND = 'django-db'
CELERY_BROKER_URL = 'redis://127.0.0.1/0'
CELERYD_CONCURRENCY = 2  # 并发worker数
# CELERYD_PREFETCH_MULTIPLIER=1
CELERYD_FORCE_EXECV = True 
CELERYD_MAX_TASKS_PER_CHILD = 50  

启动命令:celery -A san worker -l INFO -P gevent

 -------------- celery@dev.10.1.1.209 v5.2.3 (dawn-chorus)
--- ***** ----- 
-- ******* ---- Linux-3.10.0-327.el7.x86_64-x86_64-with-glibc2.17 2022-02-18 14:31:44
- *** --- * --- 
- ** ---------- [config]
- ** ---------- .> app:         san:0x7f7d31a811c0
- ** ---------- .> transport:   redis://127.0.0.1:6379/0
- ** ---------- .> results:     
- *** --- * --- .> concurrency: 4 (gevent)
-- ******* ---- .> task events: OFF (enable -E to monitor tasks in this worker)
--- ***** ----- 
 -------------- [queues]
                .> celery           exchange=celery(direct) key=celery
   

并发数显示的还是4个,我配置的为什么没有生效?
在启动命令指定-c参数是可以生效的.
我的其余配置是生效的CELERY_BROKER_URL,CELERY_RESULT_BACKEND

Answer 1

# CELERYD_CONCURRENCY = 2  # 不生效
CELERY_WORKER_CONCURRENCY = 2 # 并发worker数

官方实例代码中的注释

# Using a string here means the worker doesn't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.