Re: Asynchronous I/O poor performance

Posted by Benchao Li-2 on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Fwd-Asynchronous-I-O-poor-performance-tp36382p36404.html

Hi Mark,

According to your data, I think the config of AsyncOperator is OK.

There is one more config that might affect the throughput of AsyncOperator, it's watermark.

Because unordered async operator still keeps the order between watermarks, did you use

event time in your job, and if yes, what's the watermark interval in your job?

Mark Zitnik <[hidden email]> 于2020年7月5日周日 下午7:44写道：

Hi Benchao

The capacity is 100

Parallelism is 8 

Rpc req is 20ms 

Thanks

On Sun, 5 Jul 2020, 6:16 Benchao Li, <[hidden email]> wrote:

Hi Mark,

Could you give more details about your Flink job?

- the capacity of AsyncDataStream

- the parallelism of AsyncDataStream operator

- the time of per blocked rpc request

Mark Zitnik <[hidden email]> 于2020年7月5日周日 上午3:48写道：

Hi 

 

In my flink application I need to enrich data using AsyncDataStream.unorderedWait but I am getting poor perforce at the beginning I was just working with http call, but I have switched to grpc, I running on 8 core node and getting total of 3200 events per second my service that I am using is not fully utilized and can produce up to 10000 req/seq

Flink job flow 

Reading from Kafka ~> some enrichment with unoderedwait ~> map ~> write to Kafka 

Using Akkad grpc code written in scala 

Thanks

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Best,
Benchao Li

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Best,
Benchao Li