Purpose

The X Window System operates asynchronously. By the time an error has been detected, more requests could have been issued by the application.

Use the XSync option to request that the X Window System process one request at a time.

Parameters

N

Allows the X Window System to operate asynchronously. This is the default.

Y

Directs GDDMXD/MVS to cause the X Window System to operate synchronously.

Usage

Be aware that system performance goes down when you use XSync=Y.