From: Colin Walters <walters@verbum.org>
To: Shawn Landden <slandden@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [RFC] EPOLL_KILLME: New flag to epoll_wait() that subscribes process to death row (new syscall)
Date: Wed, 01 Nov 2017 11:22:29 -0400 [thread overview]
Message-ID: <1509549749.2563336.1158179384.52E1E4B4@webmail.messagingengine.com> (raw)
In-Reply-To: <1509549397.2561228.1158168688.4CFA4326@webmail.messagingengine.com>
On Wed, Nov 1, 2017, at 11:16 AM, Colin Walters wrote:
>
> as the maintainer of glib2 which is used by a *lot* of things; I'm not
(I meant to say "a" maintainer)
Also, while I'm not an expert in Android, I think the "what to kill" logic
there lives in userspace, right? So it feels like we should expose this
state in e.g. /proc and allow userspace daemons (e.g. systemd, kubelet) to perform
idle collection too, even if the system isn't actually low on resources
from the kernel's perspective.
And doing that requires some sort of kill(pid, SIGKILL_IF_IDLE) or so?
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next prev parent reply other threads:[~2017-11-01 15:22 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-01 5:32 Shawn Landden
2017-11-01 14:04 ` Matthew Wilcox
2017-11-01 15:16 ` Colin Walters
2017-11-01 15:22 ` Colin Walters [this message]
2017-11-03 9:22 ` peter enderborg
2017-11-01 19:02 ` Shawn Landden
2017-11-01 19:37 ` Colin Walters
2017-11-01 19:43 ` Shawn Landden
2017-11-01 20:54 ` Shawn Landden
2017-11-02 15:24 ` Shawn Paul Landden
2017-11-01 19:05 ` Shawn Landden
2017-11-01 22:10 ` Tetsuo Handa
2017-11-02 7:36 ` Shawn Landden
2017-11-02 15:45 ` Michal Hocko
2017-11-03 6:35 ` [RFC v2] prctl: prctl(PR_SET_IDLE, PR_IDLE_MODE_KILLME), for stateless idle loops Shawn Landden
2017-11-03 9:09 ` Michal Hocko
2017-11-18 4:45 ` Shawn Landden
2017-11-19 4:19 ` Matthew Wilcox
2017-11-20 8:35 ` Michal Hocko
2017-11-21 4:48 ` Shawn Landden
2017-11-21 7:05 ` Michal Hocko
2017-11-18 20:33 ` Shawn Landden
2017-11-21 4:49 ` [RFC v3] It is common for services to be stateless around their main event loop. If a process sets PR_SET_IDLE to PR_IDLE_MODE_KILLME then it signals to the kernel that epoll_wait() and friends may not complete, and the kernel may send SIGKILL if resources get tight Shawn Landden
2017-11-21 4:56 ` Shawn Landden
2017-11-21 5:16 ` [RFC v4] " Shawn Landden
2017-11-21 5:26 ` Shawn Landden
2017-11-21 9:14 ` Thomas Gleixner
2017-11-22 10:29 ` [RFC v2] prctl: prctl(PR_SET_IDLE, PR_IDLE_MODE_KILLME), for stateless idle loops peter enderborg
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