{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,19]],"date-time":"2025-06-19T04:14:16Z","timestamp":1750306456571,"version":"3.41.0"},"reference-count":5,"publisher":"Association for Computing Machinery (ACM)","issue":"2","license":[{"start":{"date-parts":[[2015,9,16]],"date-time":"2015-09-16T00:00:00Z","timestamp":1442361600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["SIGMETRICS Perform. Eval. Rev."],"published-print":{"date-parts":[[2015,9,16]]},"abstract":"<jats:p>\n            Latency curves for computer systems typically rise rapidly beyond some threshold utilization and many mathematical methods have been suggested to find this knee, but none seem to match common practice. This paper proposes a trade-off metric called ATP (an alternative to Kleinrock's power metric) which generates a\n            <jats:italic>half-latency rule<\/jats:italic>\n            for calculating the location of the knee for a latency curve. Exact analysis with this approach applied to the simplest singleserver queue results in an optimal server utilization of 71.5%, which is close to the 70% utilization used in practice. The\n            <jats:italic>half-latency rule<\/jats:italic>\n            also applies to practical situations that generate a discrete set of throughput and latency measurements. The discrete use cases include both production systems (for provisioning new work) or lab systems (for summarizing the entire latency curve into a single figure of merit for each workload and system configuration).\n          <\/jats:p>","DOI":"10.1145\/2825236.2825248","type":"journal-article","created":{"date-parts":[[2015,9,22]],"date-time":"2015-09-22T12:31:00Z","timestamp":1442925060000},"page":"28-29","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Half-Latency Rule for Finding the Knee of the Latency Curve"],"prefix":"10.1145","volume":"43","author":[{"given":"Naresh M.","family":"Patel","sequence":"first","affiliation":[{"name":"NetApp, Inc."}]}],"member":"320","published-online":{"date-parts":[[2015,9,16]]},"reference":[{"key":"e_1_2_1_1_1","first-page":"43.1.1","volume-title":"Power and Deterministic Rules of Thumb for Probabilistic Problems in Computer Communications. in Conference Record, International Conference on Communications","author":"Kleinrock L.","year":"1979"},{"key":"e_1_2_1_2_1","unstructured":"SPECsfs2008 User's Guide. www.spec.org  SPECsfs2008 User's Guide. www.spec.org"},{"volume-title":"MeasureIT","year":"2009","author":"Ley M.","key":"e_1_2_1_3_1"},{"volume-title":"MeasureIT","year":"2009","author":"Gunther N. J.","key":"e_1_2_1_4_1"},{"key":"e_1_2_1_5_1","first-page":"85","volume":"2011","author":"Gonzalez-Horta F.A.","journal-title":"ADAPTIVE"}],"container-title":["ACM SIGMETRICS Performance Evaluation Review"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2825236.2825248","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/2825236.2825248","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T05:43:23Z","timestamp":1750225403000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2825236.2825248"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,9,16]]},"references-count":5,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2015,9,16]]}},"alternative-id":["10.1145\/2825236.2825248"],"URL":"https:\/\/doi.org\/10.1145\/2825236.2825248","relation":{},"ISSN":["0163-5999"],"issn-type":[{"type":"print","value":"0163-5999"}],"subject":[],"published":{"date-parts":[[2015,9,16]]},"assertion":[{"value":"2015-09-16","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}