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alexey ermakov <zee@technocore.ru> in Netty

Customizable estimation for messages written outside the EventLoop

Motivation:

Estimation algorithm currently used for WriteTasks is complicated and

wrong. Additionally, some code relies on outbound buffer size

incremented only on actual writes to the outbound buffer.

Modifications:

- Throw away the old estimator and replace with a simple algorithm that

uses the client-provided estimator along with a statically configured

WriteTask overhead (io.netty.transport.writeTaskSizeOverhead system

property with the default value of 48 bytes)

- Add a io.netty.transport.estimateSizeOnSubmit boolean system property

allowing the clients to disable the message estimation outside the

event loop

Result:

Task estimation is user controllable and produces better results by

default

Customizable estimation for messages written outside the EventLoop

Motivation:

Estimation algorithm currently used for WriteTasks is complicated and

wrong. Additionally, some code relies on outbound buffer size

incremented only on actual writes to the outbound buffer.

Modifications:

- Throw away the old estimator and replace with a simple algorithm that

uses the client-provided estimator along with a statically configured

WriteTask overhead (io.netty.transport.writeTaskSizeOverhead system

property with the default value of 48 bytes)

- Add a io.netty.transport.estimateSizeOnSubmit boolean system property

allowing the clients to disable the message estimation outside the

event loop

Result:

Task estimation is user controllable and produces better results by

default