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Wysocki'" Cc: "'Giovanni Gherdovich'" , "'Srinivas Pandruvada'" , "'Peter Zijlstra'" , "'LKML'" , "'Frederic Weisbecker'" , "'Mel Gorman'" , "'Daniel Lezcano'" , "'Linux PM'" , "Doug Smythies" References: <000001d476bb$ec964520$c5c2cf60$@net> KfE8gqrRG7nW7KfEDgBkXZ In-Reply-To: KfE8gqrRG7nW7KfEDgBkXZ Subject: RE: [RFC/RFT][PATCH v3] cpuidle: New timer events oriented governor for tickless systems Date: Tue, 13 Nov 2018 22:26:22 -0800 Message-ID: <004901d47be2$fa1d0c20$ee572460$@net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Content-Language: en-ca Thread-Index: AdR3OVCeALNh8r9YQtagzos9/QD9hQEqMdoQ X-CMAE-Envelope: MS4wfDvzmMqnoul+Jka1AepeAbSY0zK8cgExONv4cpccr2hVYDMbLrhWslyv7eD4B53jQFTsa87ozXPtURfiC0BWHA+61FbVV65jRTwsBdifGv7+2hWEy4qh itXATDlo5/1oU0HcmcEV/hJU/S1/bTCr0Th3tws735Nh2I4Ei4UPU/N2tshpwQ/sdDMDllwPoWti6wz2dtiI9WWVCAzscX6ylTv194IIUjx83myUGYhUE1OT oz46YskwrQYL4noZBfKze0OaDLJchV/eAHSocv5U0QF4ECrDRWJcCedk0x7nACnTz6jXezqRI9dukRIK4r0quK/tHxYQK46dIZp16hwiWa0gpr4vAOgZe6rd R9a7iMGT8bGIFUH2c0/lBNG+m/eM9ULTBxCjc9m5HuRhps7uFuu9z6lOpWr7IWKf7cEJI4CLGH8kuDdbMMsDTGKpCd/vjtzkyHWxZMuk01KGd1wSh4i8sEDg CG/AvYzMiAkNFErA Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018.11.08 00:00 Rafael J. Wysocki wrote: > On Wednesday, November 7, 2018 6:04:12 PM CET Doug Smythies wrote: >> On 2018.11.04 08:31 Rafael J. Wysocki wrote: ...[snip]... >> The results are: >> http://fast.smythies.com/linux-pm/k420/k420-dbench-teo3.htm >> http://fast.smythies.com/linux-pm/k420/histo_compare.htm ...[snip]... >> There are some odd long idle durations with TEOv3 for idle >> states 1, 2, and 3 that I'll watch for with v4 testing. > > That unfortunately is a result of bugs in the v4 (and v2 - v3 too). > > Namely, it doesn't take the cases when the tick has been stopped already > into account correctly. IOW, all of the data points beyond the tick boundary > should go into the "final" peak. > > I'll send a v5. With v5 there were no long idle durations for idle states 1, 2, and 3 for this same Phoronix dbench test. ... Doug