Is it still recommended to turn on tcp_tw_recycle and tcp_tw_reuse?

[Jae Lee]

Hi everyone,

Could anyone give a scenario when tcp_tw_recycle and tcp_tw_reuse is recommended to be turned on?

I'm trying out Fluent and I have a feeling that those options are recommended for high load and wondering if anyone's using those in production?

Regards

J

[Masahiro Nakagawa]

Hi Jae,

> Could anyone give a scenario when tcp_tw_recycle and tcp_tw_reuse is recommended to be turned on?

It is depends on the number of fluentd instances and flush_interval / etc.

If many forwarders send events to aggregation server with small flush_interval, then

many tcp wait may occur.

But I think almost environments or using keep-alive used plugin work well without these parameters.

Masahiro

 

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