From: Roman Gushchin <roman.gushchin@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kinsey Ho <kinseyho@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeel.butt@linux.dev>,
Muchun Song <muchun.song@linux.dev>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
David Rientjes <rientjes@google.com>,
willy@infradead.org, Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
Joel Granados <joel.granados@kernel.org>,
Kaiyang Zhao <kaiyang2@cs.cmu.edu>,
Sourav Panda <souravpanda@google.com>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH mm-unstable v1 0/2] Track pages allocated for struct
Date: Wed, 13 Nov 2024 19:18:32 +0000 [thread overview]
Message-ID: <ZzT7iL_2G1ftdlzZ@google.com> (raw)
In-Reply-To: <20241031160604.bcd5740390f05a01409b64f3@linux-foundation.org>
On Thu, Oct 31, 2024 at 04:06:04PM -0700, Andrew Morton wrote:
> hm.
>
> On Thu, 31 Oct 2024 22:45:49 +0000 Kinsey Ho <kinseyho@google.com> wrote:
>
> > We noticed high overhead for pages allocated for struct swap_cgroup in
> > our fleet.
>
> This is scanty. Please describe the problem further.
>
> > This patchset adds the number of pages allocated for struct
> > swap_cgroup to vmstat. This can be a useful metric for identifying
> > unneeded overhead on systems which configure swap.
>
> Possibly dumb question: can we switch swap_cgroup_prepare to kmalloc()
> (or kmem-cache_alloc()) and use slab's accounting to satisfy this
> requirement?
Or vzalloc/kvmalloc(), which are used for allocating the rest of swap-related
meta-data.
prev parent reply other threads:[~2024-11-13 19:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 22:45 [PATCH mm-unstable v1 0/2] Track pages allocated for struct Kinsey Ho
2024-10-31 22:45 ` [PATCH mm-unstable v1 1/2] mm: add generic system-wide page counters Kinsey Ho
2024-10-31 22:45 ` [PATCH mm-unstable v1 2/2] mm, swap: add pages allocated for struct swap_cgroup to vmstat Kinsey Ho
2024-11-04 16:22 ` Michal Koutný
2024-10-31 23:06 ` [PATCH mm-unstable v1 0/2] Track pages allocated for struct Andrew Morton
2024-11-01 15:54 ` Matthew Wilcox
2024-11-13 0:19 ` Kinsey Ho
2024-11-13 19:18 ` Roman Gushchin [this message]
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