Hiroshi,
May I ask you where did it ever work?

Here are the results of quick test in Studio Output window: 

w "*"_$zio_"*"
**
w "*"_$zutil(67,12,$j)_"*"
*MYPC*
w ##CLASS(%SYS.ProcessQuery).Open("P"_$j).ClientNodeName ; prefered (documented) way
MYPC
w ##CLASS(%SYS.ProcessQuery).Open("P"_$j).ClientIPAddress
10.8.3.37

Alternative program which supports CacheActiveX connection showed the same results, by the way, regardless of server's platformwhether it was UNIX/Linux or Windows.

IRIS for Windows (x86-64) 2021.1 (Build 215U) Wed Jun 9 2021 09:39:22 EDT

while results were similar in all previous Cache/IRIS versions I managed to run.

Standard queues provide at-least-once delivery, which means that each message is delivered at least once. FIFO queues provide exactly-once processing, which means that each message is delivered once and remains available until a consumer processes it and deletes it. Duplicates are not introduced into the queue.

..so I guess that you mean standard queue with several worker processes dequeuing items from the queue. In this case the CPU utilization would likely depend on the number of workers, wouldn't it?
 

I guess it would not as ZRemove / ZLoad / ZIinsert / ZSave commands are mostly used as tools for the legacy way of editing routines (using routine buffer) rather than for code execution. Of course, one can execute the code inside the previously loaded routine: `zload routine do sub(...)`, but this looks strange if compared with the normal way of doing the same using `do sub^routine(...)` or `set sc=$$fun^routine(...)`. In short, virtually nobody runs code this way.

Hello Stefan,

Thanks for the reference, while I'm still not sure about the step #2 as ^JRNRESTO provides the  (defaulted) option to disable journaling of updates during the restore to make the operation faster, see the step #10 of Restore Globals From Journal Files Using ^JRNRESTO. Besides, this is the only option compatible with parallel dejournaling. So the idea to switch off journaling system-wide looks excessive.

Regards,
Alexey