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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-09 21:20:24 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-10 00:35:47 +0100 |
| commit | c56ec51ba6746c0fb341cc97ae959594952ce7bd (patch) | |
| tree | 0ab29a398ab8340da2b25af65cc6072d2f6fa1e7 | |
| parent | 7b574df5c6ac4babf46cf1e6fe11f9cfbf4ee8e7 (diff) | |
| download | man-pages-c56ec51ba6746c0fb341cc97ae959594952ce7bd.tar.gz | |
cgroups.7: Elaborate a little on problems of splitting threads across cgroups in v1
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man7/cgroups.7 | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/man7/cgroups.7 b/man7/cgroups.7 index 598081a40c..a623ce3ef7 100644 --- a/man7/cgroups.7 +++ b/man7/cgroups.7 @@ -146,9 +146,14 @@ In this view, a process can consist of multiple tasks and called such in the remainder of this man page). In cgroups v1, it is possible to independently manipulate the cgroup memberships of the threads in a process. -Because splitting threads across different cgroups -caused problems in some cases, -.\" FIXME Add some text describing why this was a problem. +.PP +The cgroups v1 ability to split threads across different cgroups +caused problems in some cases. +For example, it made no sense for the +.I memory +controller, +since all of the threads of a process share a single address space. +Because of these problems, the ability to independently manipulate the cgroup memberships of the threads in a process was removed in the initial cgroups v2 implementation, and subsequently restored in a more limited form |