From: Tejun Heo <tj@kernel.org>
To: Jesper Dangaard Brouer <hawk@kernel.org>
Cc: hannes@cmpxchg.org, lizefan.x@bytedance.com,
cgroups@vger.kernel.org, yosryahmed@google.com,
longman@redhat.com, netdev@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, shakeel.butt@linux.dev,
kernel-team@cloudflare.com,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
mhocko@kernel.org
Subject: Re: [PATCH v1 0/3] cgroup/rstat: global cgroup_rstat_lock changes
Date: Tue, 16 Apr 2024 11:38:00 -1000 [thread overview]
Message-ID: <Zh7vuBRbA9rT5OCO@slm.duckdns.org> (raw)
In-Reply-To: <171328983017.3930751.9484082608778623495.stgit@firesoul>
On Tue, Apr 16, 2024 at 07:51:19PM +0200, Jesper Dangaard Brouer wrote:
> This patchset is focused on the global cgroup_rstat_lock.
>
> Patch-1: Adds tracepoints to improve measuring lock behavior.
> Patch-2: Converts the global lock into a mutex.
> Patch-3: Limits userspace triggered pressure on the lock.
Imma wait for people's inputs on patch 2 and 3. ISTR switching the lock to
mutex made some tail latencies really bad for some workloads at google?
Yosry, was that you?
Thanks.
--
tejun
next prev parent reply other threads:[~2024-04-16 21:38 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 17:51 Jesper Dangaard Brouer
2024-04-16 17:51 ` [PATCH v1 1/3] cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints Jesper Dangaard Brouer
2024-04-16 21:36 ` Tejun Heo
2024-04-18 8:00 ` Jesper Dangaard Brouer
2024-04-23 16:53 ` Simon Horman
2024-04-29 11:36 ` Jesper Dangaard Brouer
2024-04-29 17:48 ` Simon Horman
2024-04-16 17:51 ` [PATCH v1 2/3] cgroup/rstat: convert cgroup_rstat_lock back to mutex Jesper Dangaard Brouer
2024-04-18 2:19 ` Yosry Ahmed
2024-04-18 9:02 ` Jesper Dangaard Brouer
2024-04-18 14:49 ` Shakeel Butt
2024-04-18 20:39 ` Yosry Ahmed
2024-04-19 13:15 ` Jesper Dangaard Brouer
2024-04-19 16:11 ` Shakeel Butt
2024-04-19 19:21 ` Yosry Ahmed
2024-04-18 20:38 ` Yosry Ahmed
2024-04-16 17:51 ` [PATCH v1 3/3] cgroup/rstat: introduce ratelimited rstat flushing Jesper Dangaard Brouer
2024-04-18 2:21 ` Yosry Ahmed
2024-04-18 11:00 ` Jesper Dangaard Brouer
2024-04-18 15:49 ` Shakeel Butt
2024-04-18 21:00 ` Yosry Ahmed
2024-04-18 21:15 ` Tejun Heo
2024-04-18 21:22 ` Yosry Ahmed
2024-04-18 21:32 ` Tejun Heo
2024-04-19 10:16 ` Jesper Dangaard Brouer
2024-04-19 19:25 ` Yosry Ahmed
2024-04-16 21:38 ` Tejun Heo [this message]
2024-04-18 2:13 ` [PATCH v1 0/3] cgroup/rstat: global cgroup_rstat_lock changes Yosry Ahmed
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