celery - Improve RabbitMQ throughput -

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i'm using rabbitmq , celery project , i've reached bottleneck.

my architecture follows:

  • 1 rabbitmq node
  • between 1 , 7 nodes read rabbitmq via celery

i started performance measurements , pre-populating rabbit 200k messages, node performs 600msg/sec.

starting 2 nodes same pre-populated queue, little under 600msg/sec both nodes.

adding more node same scenario leads drastic loss in throughput, reaching under 400msg/sec 7 nodes.

i've started add settings (some rabbitmq site) lead no improvement.

my current settings configuration is

[   {kernel, [     {inet_default_connect_options, [{nodelay, true}]},     {inet_default_listen_options,  [{nodelay, true}]}   ]},   {rabbit, [     {tcp_listeners,[{"0.0.0.0", 5672}]},      {vm_memory_high_watermark, 0.6},      {tcp_listen_options, [binary,                           {packet, raw},                           {reuseaddr, true},                           {backlog, 128},                           {nodelay, true},                           {exit_on_close, false},                           {keepalive, true},                           {sndbuf, 32768},                           {recbuf,32768}                           ]}   ]} ].

i've been reading blogs , posts users , mention lot bigger throughput achieving. there mentions of 100k/sec while i'm barely getting 2.8k/sec.

any thoughts on can improve throughput?

try using transient queues setting following in celeryconfig.py:

celery_default_delivery_mode = 'transient'

this prevents rabbitmq saving disk can improve throughput

also if you're using rabbitmq result backend you'll better performance switching redis.


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