From: Vlastimil Babka <vbabka@suse.cz>
To: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH] mm/vmstat: add oom_kill counter
Date: Fri, 19 May 2017 11:05:37 +0200 [thread overview]
Message-ID: <7683805d-e0ac-3ab9-0a73-47eea945436d@suse.cz> (raw)
In-Reply-To: <149517718482.32770.939520643229572472.stgit@buzz>
On 05/19/2017 08:59 AM, Konstantin Khlebnikov wrote:
> Show count of global oom killer invocations in /proc/vmstat
Maybe some more rationale why is that useful?
Vlastimil
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
> ---
> include/linux/vm_event_item.h | 1 +
> mm/oom_kill.c | 1 +
> mm/vmstat.c | 1 +
> 3 files changed, 3 insertions(+)
>
> diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
> index d84ae90ccd5c..1707e0a7d943 100644
> --- a/include/linux/vm_event_item.h
> +++ b/include/linux/vm_event_item.h
> @@ -41,6 +41,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
> KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY,
> PAGEOUTRUN, PGROTATED,
> DROP_PAGECACHE, DROP_SLAB,
> + OOM_KILL,
> #ifdef CONFIG_NUMA_BALANCING
> NUMA_PTE_UPDATES,
> NUMA_HUGE_PTE_UPDATES,
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index 04c9143a8625..c734c42826cf 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -883,6 +883,7 @@ static void oom_kill_process(struct oom_control *oc, const char *message)
> */
> do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true);
> mark_oom_victim(victim);
> + count_vm_event(OOM_KILL);
> pr_err("Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
> task_pid_nr(victim), victim->comm, K(victim->mm->total_vm),
> K(get_mm_counter(victim->mm, MM_ANONPAGES)),
> diff --git a/mm/vmstat.c b/mm/vmstat.c
> index 76f73670200a..fe80b81a86e0 100644
> --- a/mm/vmstat.c
> +++ b/mm/vmstat.c
> @@ -1018,6 +1018,7 @@ const char * const vmstat_text[] = {
>
> "drop_pagecache",
> "drop_slab",
> + "oom_kill",
>
> #ifdef CONFIG_NUMA_BALANCING
> "numa_pte_updates",
>
> --
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next prev parent reply other threads:[~2017-05-19 9:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-19 6:59 Konstantin Khlebnikov
2017-05-19 8:22 ` Konstantin Khlebnikov
2017-05-19 9:05 ` Vlastimil Babka [this message]
2017-05-19 9:10 ` Konstantin Khlebnikov
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