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On Sun, Apr 30, 2017 at 9:40 AM, Kai Krakow <hurikhan77@×××××.com> wrote: |
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> Am Sun, 30 Apr 2017 09:26:16 -0700 |
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> schrieb Jorge Almeida <jjalmeida@×××××.com>: |
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> |
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> Well, it says "should be" enabled. It's not a requirement. You may not |
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> use some of htop's features like proper process grouping. |
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Yes, and the emerge finished withou error. But the language of the |
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warning suggests that nasty things would happen to such people as |
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would fail to comply. |
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> |
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> |
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> I would be interested in why you wouldn't want to use cgroups. |
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cgroups is NOT a pet hate of mine. I'll enable it if there is a good |
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reason. But I dislike enabling stuff when I don't understand the need |
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(and words like "correct" and "should" don't really help, and make me |
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think of FUD). |
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Besides |
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> being a requirement for systemd, it also has very valid use cases for |
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This is the well-known reason to enable cgroups. I don't use systemd. |
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> other software you probably use: |
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> |
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> It allows portage to properly shut down remaining processes from ebuild |
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> build phases by knowing exactly which processes have been spawn in the |
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> compile phase, and it allows openrc to better manage the processes and |
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> proper shut down any processes belonging to a service. |
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I understand that, in principle. In practice, sshd works fine without |
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it, for example. And portage doesn't have a cgroups related USE |
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variable. Doesn't mean I won't find a need for it, someday. |
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> |
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> Also you may benefit from setting resource limits and fair resource |
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> sharing for a group of processes where ulimit applies only to single |
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> processes and doesn't know about resource shares at all. |
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> |
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> Overall, it makes sense to have it. |
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It makes sense that the kernel has it. Should it be enabled? For a |
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server, probably. For a single-user workstation? Maybe. |
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I just think this kind of stuff shouldn't be pushed unless really |
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necessary, in which case the Gentoo handbook probably would say so. |
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(Your mail contributes to clarify the reasons why one might want to use it.) |
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Regards |
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Jorge |
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