import core.memory;

void main()
{
    GC.disable();
    doSomethingLatencySensitive();
    GC.enable();

    // About to do lots of memory-hungry stuff
    // so improve performance by reserving GC memory up front
    GC.reserve(1024 * 1024 * 1024);
    doSomethingMemoryHungry();
    GC.minimize();

    message.sendToServer();
    GC.collect(); // Might as well run GC while waiting
    waitForResponseFromServer();
}