Compatibility :	3.5.21
Editions :
Platforms :

This property controls the size of the buffer used by the pipe between the JVM and Wrapper processes. When the JVM writes console output, the thread attempting to write will block if the pipe ever becomes full. This can lead to performance degradation in applications with lots of output.

All versions of the Wrapper prior to 3.5.21 used the system default buffer size which appears to be about 4KB. This was fine for most applications, however applications with very long lines of console output, or very large quantities of output would experience some performance degradation caused by blocking.

Starting with Wrapper version 3.5.21, the default buffer size was set to 65536 (64KB). The buffer size can be any value between 1024 (1KB) and 10485760 (10MB), a value of "0" (zero) is also valid and will tell the Wrapper to once again use the system default size. The default value will work for most applications and was chosen to avoid wasting too much memory when not needed.

wrapper.javaio.buffer_size=1048576

Note that there is a lot of overhead by the system to render console log output. This is especially true on Windows. If your application is experiencing performance issues logging large amounts of console output, we recommend either reducing the log output or disabling the console log output by setting the wrapper.console.loglevel property to STATUS.

Another way to improve performance is to increase the interval at which the buffered console output is processed by asking the Wrapper to use a dedicated thread. See the wrapper.javaio.use_thread property for more information.

• wrapper.console.direct (3.5.21)

  Specifies whether the Wrapper will use Windows APIs or pipes to write console log outputs.

• wrapper.console.flush (3.2.0)

  Configures the Wrapper to flush stdout after each line of output is sent to the console.

• wrapper.console.format (1.0.0)

  Configures the format of outputs sent to the console.

• wrapper.console.loglevel (1.0.0)

  Filters messages sent to the console according to their log levels.

• wrapper.console.fatal_to_stderr (3.5.3)
• wrapper.console.error_to_stderr (3.5.3)
• wrapper.console.warn_to_stderr (3.5.3)

  Controls whether warning messages sent to the console are logged through stdout or stderr.

• wrapper.console.title (3.1.0)

  Sets the title of the console in which the Wrapper is running.

• wrapper.console.title.<platform> (3.3.0)

  Set the console title per platform.

• wrapper.disable_console_input (3.3.2)

  Disables the Wrapper's ability to process console input in the JVM.

• wrapper.ntservice.console (3.1.0)
• wrapper.ntservice.generate_console (3.3.2)
• wrapper.ntservice.hide_console (3.0.4)
• wrapper.ntservice.interactive (3.0.0)
• wrapper.javaio.buffer_size (3.5.21)

  Controls the size of the buffer used by the pipe between the JVM and Wrapper processes.

• wrapper.javaio.use_thread (3.5.21)

  Controls whether the Wrapper uses a dedicated thread to process console output from the JVM.