From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <gentoo-user+bounces-178353-garchives=archives.gentoo.org@lists.gentoo.org> Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 0CE9F139694 for <garchives@archives.gentoo.org>; Thu, 25 May 2017 22:37:11 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 51420E0E72; Thu, 25 May 2017 22:37:01 +0000 (UTC) Received: from smtp.gentoo.org (mail.gentoo.org [IPv6:2001:470:ea4a:1:5054:ff:fec7:86e4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id ED176E0BE7 for <gentoo-user@lists.gentoo.org>; Thu, 25 May 2017 22:37:00 +0000 (UTC) Received: from katipo2.lan (unknown [203.86.205.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kentnl) by smtp.gentoo.org (Postfix) with ESMTPSA id 853DB34168E for <gentoo-user@lists.gentoo.org>; Thu, 25 May 2017 22:36:59 +0000 (UTC) Date: Fri, 26 May 2017 10:36:40 +1200 From: Kent Fredric <kentnl@gentoo.org> To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] tmp on tmpfs Message-ID: <20170526103640.4bc8b4e5@katipo2.lan> In-Reply-To: <20170524154545.3a09280850fe590357325959@gentoo.org> References: <20170524051002.12325.12B52329@matica.foolinux.mooo.com> <CAGfcS_mNnhQ-Ek71FOpCTFGFdG7yN+eDG6ACz3H9k9=W2xXf+w@mail.gmail.com> <20170524154545.3a09280850fe590357325959@gentoo.org> Organization: Gentoo X-Mailer: Claws Mail 3.15.0-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu) Precedence: bulk List-Post: <mailto:gentoo-user@lists.gentoo.org> List-Help: <mailto:gentoo-user+help@lists.gentoo.org> List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org> List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org> List-Id: Gentoo Linux mail <gentoo-user.gentoo.org> X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/bFsaz6e_JJ=n7DeRXVVPJrX"; protocol="application/pgp-signature" X-Archives-Salt: 6d8f698c-c037-4f6d-ae8b-7e4bc7a7b1b5 X-Archives-Hash: 4c07dfe8a8d1677bae8959b833160f20 --Sig_/bFsaz6e_JJ=n7DeRXVVPJrX Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 24 May 2017 15:45:45 +0300 Andrew Savchenko <bircoph@gentoo.org> wrote: > - smaller CPU overhead: not every i/o is being compressed, e.g. if > there is sill enough RAM available it is used without compression > overhead as usual, but if memory is not enough, swapped out pages > are being compressed instead of swapping out to disk; I found the opposite problem somehow. CPU started becomming frequently pegg= ed in zswap for no obvious reason, while the underlying IO that zswap was doing was only measurable in kb/s , far, far, far below the noise thresholds and by no means a strain on even my crappy spinning rust based swap. And to add to that, zswap introduced general protection faults and kernel p= anics. So nah, I'm glad I turned that off, it was a huge mistake. --Sig_/bFsaz6e_JJ=n7DeRXVVPJrX Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEPZazbI/qrFT1o9rn6FQySxNmqCAFAlknXIUACgkQ6FQySxNm qCCioBAAsM6qIsV5kPhojZSp9vF4mKfFwXwBxEw5q4zg3EQQvT3hxPU4qBOheA1L BNAjxfVmEHnXHLDDuAniGTqwItCpsBnemVB+WUHE1s2vG3p7h8Z3/ukTYf5iZe1o oP/Icnq/B5M3HR+hDazazw1nWE837DpeJa5k1GDYS5yxEXZV8f/uGrZC/xoI01wq QIlDbW+093T1WhPZ7ErfBQCCiN7vzsYnZqFCKIUlq6ghfhw+Gd9+MaK31qb4j/UO D0wV16pknkh5yh5jlD76WiUB0LDg+FmHwUKppmcGq0BN1EN/Ab2ETfIz6OjfdDpq W2QGs7b5T0EBOmGXdDgJcaCb/Uaxzh1HGYUBaZwk8g99yVlzea3lp7UYEOQA1Nsn xYJMc7D0lh8oQYboEjttzx/NHVhu0M8rXSdDpozNCAne8q+c2zaA1iHS0uyYNiUK qBkfIs0EhDg9J0iKQv7b0hSqsAnFOT9aRSz2NgML6Njm8rpIgfOPUcaN9zg+dWEH JhFJxGvQQ/t0Jltz8tTtVwJLmmEjdN17FScBTNDMcJGNTw6rdguqgyMCYplzYbDX qo8Ky7utra5V6GqwEQbbF6oHwINBe/aAg5GCTgI4W6xWIQBWT9+mL09diZ7nSsy8 OotMGrahQBTMiRtozPIwPloMLcvEaikueqk8lehvRVzaidU+bis= =VW0G -----END PGP SIGNATURE----- --Sig_/bFsaz6e_JJ=n7DeRXVVPJrX--