MPS issue job003960

TitleNo way to get live information about the behaviour of the MPS
Statusopen
Priorityoptional
Assigned userGareth Rees
OrganizationRavenbrook
DescriptionIt would be very useful to have live information about what the MPS is up to within a process. The kind of information you'd like to see is:

* How many chunks has it created? How much address space in each chunk?
* How much memory is committed to RAM?
* What pools are in use? How much memory in each pool?
* What chains are in use? How much memory in each generation?
* What traces are in progress? What are they up to?
AnalysisWe could arrange for the MPS to output telemetry to a named pipe, with a program reading from the pipe, updating an internal model of the state of the MPS, and displaying this in a user interface. (If the program can't keep up with the MPS, then the named pipe will fill up and the MPS will have to wait.)
How foundinspection
Evidence[1] <https://info.ravenbrook.com/mail/2016/03/03/21-27-46/0/>
Created byGareth Rees
Created on2016-03-06 11:06:22
Last modified byGareth Rees
Last modified on2016-03-06 11:06:22
History2016-03-06 GDR Created based on [1].