Hi, Which version of Kafka are you using? 0.8.0
Is the broker I/O or network saturated? - typical writes are around 45 MB per broker & there are streaming as well as batch consumers. We are already sending across compressed packets & the batch size is 100. Also, we tried the sync producer but were not able to enforce the timeouts on it.Is there anything that needs to be taken care of in this case? Regards, Dev ________________________________ From: Devendra Tagare Sent: Tuesday, November 04, 2014 10:02 AM To: users@kafka.apache.org Cc: Devendra Tagare Subject: Issue with async producer Hi, We are using an async producer to send data to kafka. The load the sender handles is around 250 rps ,the size of a message is around 25K. The configs used in the producer are : request.required.acks=0 producer.type=async batch.num.messages=10 topic.metadata.refresh.interval.ms=30000 queue.buffering.max.ms=300 queue.enqueue.timeout.ms=50 While the asnc producer works perfectly fine at 150-175 rps,the invoking method returns under 10 ms.The invoking method takes around 20000ms to return when the load increases to 250rps. On investigation we noticed QueueFullExceptions in the logs. On the kafka side the memory utilization was high.Is is because the fsync to memory is not happening fast enough? The document says the OS level fsync interval should take care of the interval at which writes are happening.Should we expediate the write using log.flush.interval.messages and log.flush.interval.ms. Also, we tried the sync producer but were not able to enforce the timeouts on it. We have 45 producers & 11 Kafka servers which handle a load of around 500mn events per day. Some of the server side properties we are using: log.segment.bytes=536870912 log.retention.check.interval.ms=60000 zookeeper.connection.timeout.ms=1000000 Regards, Dev
