set writeBufferSize not working

[whohasthis]

Hello there, we use logstash-logback-encode version 6.6 with logback version 1.2.3, and in the logback.xml file we use something like below to set the buffer size to 131072

...
131072

but we are still seeing this warning message in the console log, the same as before the writeBufferSize is set to 131072
14:39:24,644 |-WARN in net.logstash.logback.appender.LogstashTcpSocketAppender[logstash] - Dropped 76001 events (and counting...) due to ring buffer at max capacity [8192]

Could anyone point a finger on where might be wrong to cause the writeBufferSize setting not working ? Thanks a lot.

[brenuart]

Could you please post an example of your configuration file?