Another daemon for managing control groups

Posted Dec 10, 2013 13:50 UTC (Tue) by corbet (editor, #1)
In reply to: Another daemon for managing control groups by Cyberax
Parent article: Another daemon for managing control groups

Having watched this whole process, I have to disagree a bit. Tejun set in to the task of reworking cgroups to make them more maintainable and usable; the systemd folks found themselves having to react to that change. Systemd was using the multiple hierarchy feature, keeping its own special cgroup hierarchy off to the side. Remember the PaxControlGroups document? See this note from last June (and this one) where systemd's response to the cgroup changes was worked out.

Now, in the process of redesigning things, Tejun has certainly talked to the users of cgroups, including the systemd developers. Doing otherwise would not have been smart. But I do not think it's fair to say that systemd has driven these changes.

Another daemon for managing control groups

Posted Dec 10, 2013 16:12 UTC (Tue) by Cyberax (✭ supporter ✭, #52523) [Link] (2 responses)

I was referring to these messages as well. They read exactly as if Tejun Heo privately talked to SystemD developers and then systemd and cgroup folks presented the future changes as a fait-accompli with no public discussions.

Another daemon for managing control groups

Posted Dec 10, 2013 17:23 UTC (Tue) by rahulsundaram (subscriber, #21946) [Link] (1 responses)

In other words, your assertion is a guess and you don't really know but the language you use makes it sound almost like a conspiracy. It is misleading at best.

Another daemon for managing control groups

Posted Dec 10, 2013 18:06 UTC (Tue) by Cyberax (✭ supporter ✭, #52523) [Link]

Well, from my vantage point it definitely looks like cgroups developers are doing only what systemd developers want. It might be accidental, but I really don't care.