Experimental Physics and Industrial Control System
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MCoreUtils - Utilities for EPICS on Multi-Core Linux
I recently started working on a collection of useful stuff for
running IOCs on multi-core (RT or not) Linux architectures. (*)
The first two modules are now available on SourceForge [1]:
Real-time threadShow routines
Enhanced threadShow functions that print LWP ID, scheduling policy,
and CPU affinity.
Rule-based setting of real-time properties
Pattern matching engine that allows to set real-time properties of
EPICS threads (scheduling policy, priority, and CPU affinity) by
regular _expression_ matching on thread names. Rules can be set in a
config file or from the iocShell, and will be applied to any thread
started through the libCom/OSI API of EPICS Base. This allows to
restrict the complete IOC onto a subset of CPUs, dedicate CPUs to
specific (driver) threads, fine-tune policies and priorities, etc.
MCoreUtils need EPICS Base 3.15.0.1 or later, on a Linux platform.
This project is in an early stage.
I know that more and more EPICS sites are using this family of
platforms and have to cope with similar things, so I would like to
invite everybody to step forward with ideas and suggestions (and
code!). I hope we can manage to minimize parallel developments, and
combine efforts for a better real-time behaviour and performance of
EPICS.
Cheers,
~Ralph
[1]
http://epics.sourceforge.net/mcoreutils/
(*) Work supported by ITER International Organization and
Helmholtz-Zentrum Berlin / BESSY II
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- Replies:
- Re: Utilities for EPICS on Multi-Core Linux Jack Smith
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ANJ, 18 Nov 2013 |
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