From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Gong" Subject: Re: [PATCH 1/5] trace, RAS: Add basic RAS trace event Date: Wed, 16 Apr 2014 02:33:01 -0400 Message-ID: <20140416063301.GC11297@gchen.bj.intel.com> References: <1395985981-20476-1-git-send-email-gong.chen@linux.intel.com> <1395985981-20476-2-git-send-email-gong.chen@linux.intel.com> <20140409194654.GR6529@pd.tnic> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UFHRwCdBEJvubb2X" Return-path: Received: from mga11.intel.com ([192.55.52.93]:61300 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754708AbaDPG6O (ORCPT ); Wed, 16 Apr 2014 02:58:14 -0400 Content-Disposition: inline In-Reply-To: <20140409194654.GR6529@pd.tnic> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Borislav Petkov Cc: tony.luck@intel.com, m.chehab@samsung.com, rostedt@goodmis.org, linux-acpi@vger.kernel.org, arozansk@redhat.com --UFHRwCdBEJvubb2X Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 09, 2014 at 09:46:54PM +0200, Borislav Petkov wrote: >=20 > menuconfig RAS > bool "Reliability, Availability, Serviceability features" > help > =20 How about this: Reliability, availability, and serviceability (RAS) is a computer hardware engineering term. Computers designed with higher levels of RAS have a multitude of features that protect data integrity and help them stay available for long periods of time without failure. Reliability can be defined as the probability that it will produce correct outputs up to some given time. Reliability is enhanced by features that help to avoid, detect and repair hardware faults. Availability is the probability a system is operational at a given time, i.e. the amount of time a device is actually operating as the percentage of total time it should be operating. Serviceability or maintainability is the simplicity and speed with which a system can be repaired or maintained; if the time to repair a failed system increases, then availability will decrease. Note that reliability and availability are distinct concepts: Reliability is a measure of the ability of a system to function correctly, including avoiding data corruption, whereas availability measures how often it is available for use, even though it may not be functioning correctly. For example, a server may run forever and so have ideal availability, but may be unreliable, with frequent data corruption. --UFHRwCdBEJvubb2X Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJTTiQdAAoJEI01n1+kOSLHiWgQAJC7B7cZ3jIpVmdUsTEHmWPK YhhqWRuVjfnD+34UHHabTpPefaO/MO0bMBlrpBWyJ/BCsmab1T2eE6hGPrbfNVrf l2MyE67C8O7CJoV4AztdGsjR3NHwepBPdIzI1eQwSKRfCQm3Ujo6SFs37ApdlSlk aASBo95ku1ucHSQgepzBd609gHK5kvvolQr0sMwQMCJYacQ02QgOdoTyJRK6lgEY CRL42p5GKRcXL8461Ggxt6C06xkXSfbtngONQkb0BvSkPogFtsZZrNWWUg/xav3X m9P0yl6awey1+deOlryHUhOIe1ElKqP7+mLDRYmvOGsHs11D/5UHCeqMdDKB63RE 9OM2+wkBWW7w3PvrW+qJWUqZSUkCRPVDzplRD/QbzHX6EQNot1PMXYPTpyqCviRZ 77hty6niYRJWDtJlfBlEHIwfVZZov/Dzzzd5GBzn9AGFsLfkdG5ID0Tsy5H2263j HCiEEW9FbChRDM1v11zISTxQIBX8mxJIXNvfrM7KWB7MV83BRCfgVcdqb3ygi7kL dzPDWsBDv5vPXFYpwMawX8F5aHdTWdc2cazhZoV+YV7mVQUFsA8WjqX3eZXbN8nt /BGHFQ3mrCLRK2oGKQRpFbixieoeP4W1MvzyhAH6iDfFh5z00CdsBGvB9Dvrt8I7 Tlwaf0Zz72GK4U8bDT4Q =hnon -----END PGP SIGNATURE----- --UFHRwCdBEJvubb2X--