From: Shakeel Butt <shakeel.butt@linux.dev>
To: Oliver Sang <oliver.sang@intel.com>
Cc: "Qi Zheng" <qi.zheng@linux.dev>,
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>,
"Harry Yoo" <harry.yoo@oracle.com>,
"Hugh Dickins" <hughd@google.com>,
"Imran Khan" <imran.f.khan@oracle.com>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Kamalesh Babulal" <kamalesh.babulal@oracle.com>,
"Lance Yang" <lance.yang@linux.dev>,
"Liam Howlett" <Liam.Howlett@oracle.com>,
"Lorenzo Stoakes" <ljs@kernel.org>,
"Michal Hocko" <mhocko@suse.com>,
"Michal Koutný" <mkoutny@suse.com>,
"Mike Rapoport" <rppt@kernel.org>,
"Muchun Song" <muchun.song@linux.dev>,
"Muchun Song" <songmuchun@bytedance.com>,
"Nhat Pham" <nphamcs@gmail.com>,
"Roman Gushchin" <roman.gushchin@linux.dev>,
"Suren Baghdasaryan" <surenb@google.com>,
"Usama Arif" <usamaarif642@gmail.com>,
"Vlastimil Babka" <vbabka@kernel.org>,
"Wei Xu" <weixugc@google.com>, "Yosry Ahmed" <yosry@kernel.org>,
"Yuanchu Xie" <yuanchu@google.com>, "Zi Yan" <ziy@nvidia.com>,
"Usama Arif" <usama.arif@linux.dev>,
cgroups@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [linus:master] [mm] 01b9da291c: stress-ng.switch.ops_per_sec 67.7% regression
Date: Mon, 18 May 2026 09:39:00 -0700 [thread overview]
Message-ID: <agtATZG9mIlYzMUl@linux.dev> (raw)
In-Reply-To: <agoYp1zW9afZ6uQz@linux.dev>
On Sun, May 17, 2026 at 12:38:48PM -0700, Shakeel Butt wrote:
> On Sun, May 17, 2026 at 08:55:50PM +0800, Oliver Sang wrote:
> > hi, Shakeel, hi, Qi,
> >
> > #2: when we test above patch, we found the server easy to crash while running
> > tests. we try to run up to 20 times, only 2 of them run successfully (above
> > 37739220 is just the average data from these 2 runs, since the data is stable,
> > we think maybe it's ok to report to you with this data).
> > we also noticed for [1] there is a [syzbot ci] report in [2]. since we don't
> > have serial output for our test server in this report which is for performance
> > tests, we cannot say if other 18 runs failed due to similar reason. just FYI.
> >
>
> The syzbot report is simply a rcu warning which will be fixed in v2. Do you
> have more details on the crash you are seeing? Is it page counter underflow
> warning?
>
> Thanks again for the help.
Hi Oliver, it seems like sashiko found another issue with v2, so, if you have
not yet started the test, you can skip it.
Also I am rethinking the approach, so I will send a prototype in response on
this email for which I will need your help in testing.
next prev parent reply other threads:[~2026-05-18 16:39 UTC|newest]
Thread overview: 17+ 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
2026-05-13 2:10 ` Qi Zheng
2026-05-13 13:49 ` Shakeel Butt
2026-05-13 14:27 ` Shakeel Butt
2026-05-14 7:46 ` Qi Zheng
2026-05-14 13:40 ` Shakeel Butt
2026-05-15 7:37 ` Qi Zheng
2026-05-15 17:09 ` Shakeel Butt
2026-05-17 12:55 ` Oliver Sang
2026-05-17 19:38 ` Shakeel Butt
2026-05-18 16:39 ` Shakeel Butt [this message]
2026-05-18 17:54 ` Shakeel Butt
2026-05-19 5:04 ` Oliver Sang
2026-05-19 14:22 ` Shakeel Butt
2026-05-20 2:43 ` Oliver Sang
2026-05-20 4:12 ` Shakeel Butt
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