Re: [PATCH 1/3] rt-tests: determine_maximum_mpps.sh: Add a menu to get user settings.

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On Mon, 14 Dec 2020, Daniel Wagner wrote:

> Hi John,
> 
> On Wed, Dec 09, 2020 at 01:30:58PM -0500, John Kacur wrote:
> > Incorporate the functionality of the get_cpuinfo_mhz.sh script into
> > determine_maximum_mpps.sh so that get_cpuinfo_mhz.sh can be removed.
> > 
> > Currently determine_maximum_mpps.sh (part of queuelat) asks the user
> > to edit the PREAMBLE in the script to set the environment.
> > 
> > Get rid of this by creating a menu that allows the user the set these
> > variables from a menu when running the script.
> > 
> > Here is the output from running the script with the -h option
> > 
> > ./src/queuelat/determine_maximum_mpps.sh -h
> > Usage:
> > determine_maximum_mpps.sh [OPTIONS]
> > 
> > -c cpulist
> > 	List of processors to run on. The default is processor 0
> > 	Numbers are separated by commas and may include ranges. Eg. 0,3,7-11
> 
> Does the option also do CPU affinity. In this case I would suggest to
> use '-a' to go with the pattern.
> 
> What about long options? Long options are propably a bit harder to
> implement in shell but it would be good in my opinion to keep all those
> tests commands as close as possible.
> 
> Thanks,
> Daniel
> 
> 

The script is using taskset to set the cpu affinity, and so it uses
-c to match the option in taskset. However the script also uses
taskset to run queuelat which uses -c to mean cycles-per-packet.

I am fine with changing this option to -a to match cyclictest and other 
tests in the suite. I'll send a patch to do that.

Yeah, long options are a PITA in shell script, I think I might just
convert the script to python where command line options are a breeze.

That will come in a later patch.

John



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