From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f198.google.com (mail-qt0-f198.google.com [209.85.216.198]) by kanga.kvack.org (Postfix) with ESMTP id 4F6E86B0008 for ; Sun, 22 Jul 2018 19:44:54 -0400 (EDT) Received: by mail-qt0-f198.google.com with SMTP id l23-v6so13543809qtp.1 for ; Sun, 22 Jul 2018 16:44:54 -0700 (PDT) Received: from o2.20qt.s2shared.sendgrid.net (o2.20qt.s2shared.sendgrid.net. [167.89.106.65]) by mx.google.com with ESMTPS id e16-v6si2046021qvj.200.2018.07.22.16.44.53 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 22 Jul 2018 16:44:53 -0700 (PDT) Subject: Re: [Bug 200627] New: Stutters and high kernel CPU usage from list_lru_count_one when cache fills memory References: <20180722164034.62bf461029073a21e591b8c3@linux-foundation.org> From: Kevin Liu Message-ID: <5166980c-210e-2e68-974a-9115e5c72543@potatofrom.space> Date: Sun, 22 Jul 2018 23:44:52 +0000 (UTC) Mime-Version: 1.0 In-Reply-To: <20180722164034.62bf461029073a21e591b8c3@linux-foundation.org> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="lXPaFsTwOLHmpI3CcHlbtrFRIPR6oHJKN" Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --lXPaFsTwOLHmpI3CcHlbtrFRIPR6oHJKN Content-Type: multipart/mixed; boundary="2JAu83Ezf0WAO1rN1Jb3kVZhDntfeAunI"; protected-headers="v1" From: Kevin Liu To: Andrew Morton Cc: bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org Message-ID: <5166980c-210e-2e68-974a-9115e5c72543@potatofrom.space> Subject: Re: [Bug 200627] New: Stutters and high kernel CPU usage from list_lru_count_one when cache fills memory References: <20180722164034.62bf461029073a21e591b8c3@linux-foundation.org> In-Reply-To: <20180722164034.62bf461029073a21e591b8c3@linux-foundation.org> --2JAu83Ezf0WAO1rN1Jb3kVZhDntfeAunI Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable > How recently? Were earlier kernels better behaved? I've seen this issue both on Linux 4.16.15 (admittedly using the -ck patchset) and on vanilla Linux 4.18-rc4 (which is what I'm currently using). I'm fairly certain that it did not occur on Linux 4.14.50, which I used previously, but I will boot back into it to double-check and let you know. --2JAu83Ezf0WAO1rN1Jb3kVZhDntfeAunI-- --lXPaFsTwOLHmpI3CcHlbtrFRIPR6oHJKN Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEs1HlSYIZlMe4Q7sPWoJBAt/j3YYFAltVFvIACgkQWoJBAt/j 3YazIg/9G56zLvwCJClq71KaKlWgsDmIBcnozQ00eAlYNta573tc1edg1BaSSuTO yY8G+B9RHDNTz/Re/PbQdRf0bDtWDrwQDNF+Ensem2Opt0H2aX1/bVfgdwResS2l ZVh97bZa8UPH9dGImjwk/6S/2662SA4DC6i3DlNYijBgiZ/NpJK4ch/Wvio7Xzjf EvZHs/Gvejp7iXvA7nJmvMHi8UM4BSIOO1ePzhaQ1iVNZXAVJ8XWPhlIGlKldq3+ zJ8fYRYfeI/nxXHIoUM723gYs6JkfwKWMJC0+1MsP43yQJtckMzyHNac5dx/Dqx2 I2jV5xZlQ2xcMfmEcHVWO4xorjbxh86LkQkyj3d/GiFqistYKgKWHDe1lDerNtg5 VUHZtT6oGIpik5N1Eotf1kMI6LNJnPps4lM2ADAlNcZQXX46Lg1bA4u0efdwz2Sl 1S1fO6rTJv7blLdTwmnVzjzBHxBssubuNLUQ2RZ809SmQVNEqW07n+ICO/Ag2yRC 2tLDGDFZ0QiI0c/ZB7bsBQoA7Rb+8wY/vKT+RLlQaNY4NSqD0DJi1nhrxIBKZTfg BvqsUoH73AVH/qRBU1B/TSJ4FFPcfk65HQZ9d2O7G/r5zpI2xrUdmcbNuwJDP5t1 vciIzyuiHFM00SbCiZwAjqxmvZmNSYHmbff/M0DJf0a+EmC3rUQ= =6IaB -----END PGP SIGNATURE----- --lXPaFsTwOLHmpI3CcHlbtrFRIPR6oHJKN--