From: Oleksandr Natalenko <oleksandr@redhat.com>
To: Timofey Titovets <nefelim4ag@gmail.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Vlastimil Babka <vbabka@suse.cz>, Michal Hocko <mhocko@suse.com>,
Matthew Wilcox <willy@infradead.org>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Aaron Tomlin <atomlin@redhat.com>,
linux-mm@kvack.org
Subject: Re: [PATCH RFC 0/4] mm/ksm: add option to automerge VMAs
Date: Mon, 13 May 2019 14:01:17 +0200 [thread overview]
Message-ID: <20190513120117.aeiij4v2ncu43yxt@butterfly.localdomain> (raw)
In-Reply-To: <CAGqmi744Vef7iF0tuBO3uBtXbNCKYxBV_c-T_Eg3LKPY0rKcWA@mail.gmail.com>
On Mon, May 13, 2019 at 02:48:29PM +0300, Timofey Titovets wrote:
> > Also, just for the sake of another piece of stats here:
> >
> > $ echo "$(cat /sys/kernel/mm/ksm/pages_sharing) * 4 / 1024" | bc
> > 526
>
> IIRC, for calculate saving you must use (pages_shared - pages_sharing)
Based on Documentation/ABI/testing/sysfs-kernel-mm-ksm:
pages_shared: how many shared pages are being used.
pages_sharing: how many more sites are sharing them i.e. how
much saved.
and unless I'm missing something, this must be already accounted:
[~]$ echo "$(cat /sys/kernel/mm/ksm/pages_shared) * 4 / 1024" | bc
69
[~]$ echo "$(cat /sys/kernel/mm/ksm/pages_sharing) * 4 / 1024" | bc
563
--
Best regards,
Oleksandr Natalenko (post-factum)
Senior Software Maintenance Engineer
next prev parent reply other threads:[~2019-05-13 12:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-10 7:21 Oleksandr Natalenko
2019-05-10 7:21 ` [PATCH RFC 1/4] mm/ksm: introduce ksm_enter() helper Oleksandr Natalenko
2019-05-10 7:21 ` [PATCH RFC 2/4] mm/ksm: introduce VM_UNMERGEABLE Oleksandr Natalenko
2019-05-10 7:21 ` [PATCH RFC 3/4] mm/ksm: allow anonymous memory automerging Oleksandr Natalenko
2019-05-10 7:21 ` [PATCH RFC 4/4] mm/ksm: add automerging documentation Oleksandr Natalenko
2019-05-13 10:38 ` [PATCH RFC 0/4] mm/ksm: add option to automerge VMAs Kirill Tkhai
2019-05-13 11:33 ` Oleksandr Natalenko
2019-05-13 11:48 ` Timofey Titovets
2019-05-13 12:01 ` Oleksandr Natalenko [this message]
2019-05-13 12:06 ` Oleksandr Natalenko
2019-05-13 12:37 ` Kirill Tkhai
2019-05-14 6:30 ` Oleksandr Natalenko
2019-05-14 9:12 ` Kirill Tkhai
2019-05-14 13:33 ` Oleksandr Natalenko
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