کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6894796 1445932 2018 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Colocating tasks in data centers using a side-effects performance model
ترجمه فارسی عنوان
وظایف تعویض در مراکز داده با استفاده از یک مدل عملکرد عاملی جانبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
چکیده انگلیسی
In data centers, many tasks (services, virtual machines or computational jobs) share a single physical machine. We explore a new resource management model for such colocation. Our model uses two parameters of a task-its size and its type-to characterize how a task influences the performance of the other tasks allocated on the same machine. As typically a data center hosts many similar, recurring tasks (e.g. a webserver, a database, a CPU-intensive computation), the resource manager should be able to construct these types and their performance interactions. In particular, we minimize the total cost in a model in which each task's cost is a function of the total sizes of tasks allocated on the same machine (each type is counted separately). We show that for a linear cost function the problem is strongly NP-hard, but polynomially-solvable in some particular cases. We propose an algorithm polynomial in the number of tasks (but exponential in the number of types and machines) and another algorithm polynomial in the number of tasks and machines (but exponential in the number of types and admissible sizes of tasks). We also propose a polynomial time approximation algorithm, and, in the case of a single type, a polynomial time exact algorithm. For convex costs, we prove that, even for a single type, the problem becomes NP-hard, and we propose an approximation algorithm. We experimentally verify our algorithms on instances derived from a real-world data center trace. While the exact algorithms are infeasible for large instances, the approximations and heuristics deliver reasonable performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Operational Research - Volume 268, Issue 2, 16 July 2018, Pages 450-462
نویسندگان
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