From: Shakeel Butt <shakeel.butt@linux.dev>
To: kernel test robot <oliver.sang@intel.com>
Cc: "Qi Zheng" <zhengqi.arch@bytedance.com>,
oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
"Andrew Morton" <akpm@linux-foundation.org>,
"David Carlier" <devnexen@gmail.com>,
"Allen Pais" <apais@linux.microsoft.com>,
"Axel Rasmussen" <axelrasmussen@google.com>,
"Baoquan He" <bhe@redhat.com>,
"Chengming Zhou" <chengming.zhou@linux.dev>,
"Chen Ridong" <chenridong@huawei.com>,
"David Hildenbrand" <david@kernel.org>,
"Hamza Mahfooz" <hamzamahfooz@linux.microsoft.com>,
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"Imran Khan" <imran.f.khan@oracle.com>,
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"Michal Hocko" <mhocko@suse.com>,
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"Wei Xu" <weixugc@google.com>, "Yosry Ahmed" <yosry@kernel.org>,
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"Usama Arif" <usama.arif@linux.dev>,
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Subject: Re: [linus:master] [mm] 01b9da291c: stress-ng.switch.ops_per_sec 67.7% regression
Date: Tue, 12 May 2026 09:03:55 -0700 [thread overview]
Message-ID: <agNO8G8tPnPuVrGq@linux.dev> (raw)
In-Reply-To: <202605121641.b6a60cb0-lkp@intel.com>
On Tue, May 12, 2026 at 08:56:52PM +0800, kernel test robot wrote:
>
>
> Hello,
>
> kernel test robot noticed a 67.7% regression of stress-ng.switch.ops_per_sec on:
>
>
> commit: 01b9da291c4969354807b52956f4aae1f41b4924 ("mm: memcontrol: convert objcg to be per-memcg per-node type")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
This is most probably due to shuffling of struct mem_cgroup and struct
mem_cgroup_per_node members.
I will try to reproduce and will followup on this.
prev parent reply other threads:[~2026-05-12 16:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 12:56 [linus:master] [mm] 01b9da291c: stress-ng.switch.ops_per_sec 67.7% regression kernel test robot
2026-05-12 16:03 ` Shakeel Butt [this message]
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