《A Provider-side View of Web Search Response Time》.pdf

A Provider-side View of Web Search Response Time Yingying Chen Ratul Mahajan Baskar Sridharan Zhi-Li Zhang (Univ. of Minnesota) Microsoft 300+t Abstract— Using a large Web search service as a case (a) houly daily study, we highlight the challenges that modern Web services ) s m ( face in understanding and diagnosing the response time ex- T perienced by users. We show that search response time R S (SRT) varies widely over time and also exhibits counter- t M T W Th F S Su intuitive behavior. It is actually higher during off-peak hours, 200+t when the query load is lower, than during peak hours. To re- weekday (b) weekend ) off−peak solve this paradox and explain SRT variations in general, we s weekday weekday