bug#11265: 24.0.94; gdb-mi very slow on Windows

[Karl-Heinz Schneider <karl-heinz@schneider-inet.de>]

>> I discovered that the slowdown happens after restarting the process 
>> to
>> debug.
>> I did the following procedure:
>>
>> 1. Start the debugger (with process cmd-line).
>> 2. Enter run to start the process
>> 3. Debug the process
>> 4. Enter kill to stop the process
>> 5. Change code and recompile
>> 6. Start again with step 2
>>
>> Doing this three or four times debugging starts to get slow.
>
> If you omit step 5, does the problem still happen?

Yes, the problem doesn't depend on recompiling. Its more to wait some
seconds before begin a new debugging cycle.

>
>> All debugging is done within the gud buffer using GDB commands.
>
> If, instead of stopping the process in step 4, you kill the gud 
> buffer
> through which you interact with GDB, do you still see the slowdown
> after several times that you kill and restart the debugging?

Killing the GUD buffer and starting a new debugging session totally
recovers to original performance.

Kalle