From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: Michal Hocko <mhocko@suse.com>
Cc: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>,
"david@redhat.com" <david@redhat.com>,
"quic_pkondeti@quicinc.com" <quic_pkondeti@quicinc.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"hannes@cmpxchg.org" <hannes@cmpxchg.org>,
"mgorman@techsingularity.net" <mgorman@techsingularity.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"vbabka@suse.cz" <vbabka@suse.cz>,
"quic_charante@quicinc.com" <quic_charante@quicinc.com>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
"quic_cgoldswo@quicinc.com" <quic_cgoldswo@quicinc.com>
Subject: Re: [RESEND PATCH V2] mm: page_alloc: unreserve highatomic page blocks before oom
Date: Fri, 26 Jan 2024 16:31:45 -0800 [thread overview]
Message-ID: <2024012635-stoneware-backboned-2ca0@gregkh> (raw)
In-Reply-To: <Za-h5t7HX5rNrVdq@tiehlicka>
On Tue, Jan 23, 2024 at 12:24:22PM +0100, Michal Hocko wrote:
> On Tue 23-01-24 11:08:28, Joakim Tjernlund wrote:
> [...]
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.001379] Mem-Info:
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.003665] active_anon:18 inactive_anon:2435 isolated_anon:0
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.003665] active_file:1 inactive_file:0 isolated_file:0
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.003665] unevictable:267 dirty:0 writeback:0
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.003665] slab_reclaimable:384 slab_unreclaimable:2223
> > Mar 9 12:52:40 xr kern.warn kernel: [ 1066.003665] mapped:1 shmem:0 pagetables:309 bounce:0
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.003665] kernel_misc_reclaimable:0
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.003665] free:1054 free_pcp:24 free_cma:0
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.037938] Node 0 active_anon:72kB inactive_anon:9740kB active_file:4kB inactive_file:0kB unevictable:1068kB isolated(anon):0kB isolated(file):0kB mapped:4kB dirty:0kB writeback:0kB shmem:0kB writeback_tmp:0kB kernel_stack:9
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.061723] Normal free:4216kB min:128kB low:160kB high:192kB reserved_highatomic:4096KB active_anon:72kB inactive_anon:9740kB active_file:4kB inactive_file:0kB unevictable:1068kB writepending:0kB present:36864kB managed:2944
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.087595] lowmem_reserve[]: 0 0
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.090918] Normal: 206*4kB (MEH) 198*8kB (UMEH) 79*16kB (UMEH) 13*32kB (H) 2*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4216kB
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.104104] 269 total pagecache pages
> > Mar 9 12:52:41 xr kern.warn kernel: [ 1066.107768] 9216 pages RAM
>
> OK, so this is really a tiny system (36MB) and having 4MB in highatomic
> reserves is clearly too much. So this matches the patch you are
> referencing and it migh help you indeed.
Ok, now queued up, thanks.
greg k-h
prev parent reply other threads:[~2024-01-27 0:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-24 10:57 [RESEND PATCH V2] mm: page_alloc: unreserve highatomic page blocks before oom Charan Teja Kalla
2023-11-24 10:59 ` David Rientjes
2024-01-18 17:23 ` Joakim Tjernlund
2024-01-22 17:41 ` Greg KH
2024-01-22 22:49 ` Joakim Tjernlund
2024-01-22 23:04 ` Greg KH
2024-01-22 23:14 ` Joakim Tjernlund
2024-01-23 10:05 ` Michal Hocko
2024-01-23 11:08 ` Joakim Tjernlund
2024-01-23 11:24 ` Michal Hocko
2024-01-27 0:31 ` gregkh [this message]
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