Home › Forums › kdb+ › KDB process unable to process request › Re: KDB process unable to process request leahs Member April 18, 2022 at 12:00 am Hello, The KX IPC documentation found here highlights the role that the .z namespace plays in IPC and specifically here presents .z.W .z.W returns a dictionary where you can see how many messages and their size that are queued on a handle. Hope this helps, Leah