Bug 73685

Summary:	RFE: Allow resource controls on systemd-run
Product:	systemd	Reporter:	Sandeep Srinivasa <sss>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED FIXED	QA Contact:	systemd-bugs
Severity:	enhancement
Priority:	medium
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Sandeep Srinivasa 2014-01-16 07:07:12 UTC

systemd-run is actually very nifty to run programs in a resource controlled mode. It is pretty much a better "isolate" (http://www.ucw.cz/moe/isolate.1.html).

The problem is that systemd-run does not allow programs to be run with resource controls. I am aware of the --slice parameter, but that is an umbrella resource control:  If I run 5 different programs simultaneously (with differing resource requirements), It does not let me allocate resource control on a per run basis. The other solution suggested to me on IRC was to issue a "systemctl set-property" after firing the systemd-run, which really does not serve the purpose.

I tried passing a .service file to systemd-run (which allows specification of resource controls within it), but it doesnt seem to execute it. In fact, I would argue that systemd-run should simply read in a .service file (which has all the --slice and --scope parameters built in), honor the resource controls and execute it. You can ignore the dependencies, etc. which are not required. All the commandline arguments would be unnecessary.

Comment 1 David Strauss 2014-01-16 23:49:14 UTC

What version of systemd are you running? Resource limit implementations vary widely between the popular releases currently in production.

Comment 2 Sandeep Srinivasa 2014-01-17 17:19:37 UTC

Fedora 20 (I'm new to fedora - coming from debian). Version 208 is what I'm pretty sure it is.

Comment 3 Lennart Poettering 2014-03-11 01:56:14 UTC

This is implemented now in git. See the systemd-run man page, regarding the "-p" switch (there's also an example at the end).

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