Conversation
jann@infosec.exchange

Jann Horn

huh, systemd-run is really neat, you can do stuff like:
$ systemd-run --user -S -p MemoryHigh=1000M -p MemoryMax=1100M
and get a shell inside which you can't use more than around 1G of RAM (but can use more swap)?

3
3
4
freya@chaosfem.tw

Ra (Freya) (it/its)𒀭𒈹𒍠𒊩

Reply to @jann@infosec.exchange

@jann oh! so like Solaris projects, but.... jankier?

1
0
0
jann@infosec.exchange

Jann Horn

Reply to @freya@chaosfem.tw

@freya I mean, normally you'd configure these controls for services, in service files.
This is just the command line helper for "I want a quick one-off ephemeral service on which I can set all the same controls as on a service file". The config flags I'm setting turn into cgroup stuff at the kernel level.

0
0
0
vbabka@mastodon.social

Vlastimil Babka 🇨🇿🇪🇺🇺🇦

Reply to @jann@infosec.exchange

@jann MemorySwapMax should work too if you want swap limit no?

1
0
0
jann@infosec.exchange

Jann Horn

Reply to @vbabka@mastodon.social

@vbabka ah, yes, thanks for the pointer

1
0
0
ljs@mastodonapp.uk

Lorenzo Stoakes

Reply to @jann@infosec.exchange

@jann @vbabka

1
0
0
jann@infosec.exchange

Jann Horn

Reply to @ljs@mastodonapp.uk

@ljs @vbabka presumably the "I hate you" due to the pointers being 32-bit

1
0
0
vbabka@mastodon.social

Vlastimil Babka 🇨🇿🇪🇺🇺🇦

Reply to @jann@infosec.exchange

@jann @ljs well at least they fit in the 2G/2G split, could be worse given the imminent highmem removal

0
0
0
jmorris

James Morris

Reply to @jann@infosec.exchange
@jann it would be interesting to add landlock support here, if it’s not already being done ? @l0kod
1
0
0
l0kod@mastodon.social

Mickaël Salaün

Reply to @jmorris

@jmorris @jann there is WIP but so far not a lot of feedback: https://github.com/systemd/systemd/pull/39174
@pid_eins

0
0
1
About social.kernel.org

Terms of service

  1. Please do not use this service in violation of the Linux Kernel Code of Conduct. Doing so will result in your account suspension with the referral of the matter to the CoC committee.

  2. "Repeating"/"boosting" someone else's status on this platform will be treated as endorsement and will fall under rule #1.

  3. You are encouraged to use this platform to promote your work on the Linux Kernel, but there is no restriction on permitted topics (with the exception of anything covered by #1 above).

  4. There is no requirement to post in English, but it should be considered the primary language of communication on this platform.

Privacy notice

The admins of this service have access to all posted statuses. They aren't looking, but if it's something they shouldn't know about, then you should not post it on this platform.

Please see the Linux Foundation Privacy Policy, which applies to this platform as well.

Getting your own account

If you would like an account on this instance, please check that the following applies to you:

  • You are listed in MAINTAINERS or CREDITS

  • OR: You have a kernel.org account or email address

  • OR: You have a long and established history of involvement with the Linux Kernel

If the above is true and you agree with the Terms of Service and Privacy Notice listed above, please use these instructions to request an account: