Summary Spark does not have a good mechanism to select reasonable RDDs to cache their partitions in limited memory.  --> Propose a novel selection algorithm, by which Spark can automatically select the RDDs to cache their partitions in memory accordi…

In a particular embodiment, a circuit device includes a translation look-aside buffer (TLB) configured to receive a virtual address and to translate the virtual address to a physical address of a cache having at least two partitions. The circuit devi…

1.Abstract:(1)字体太乱,单词中有空格(2) FAPRA此名词第一出现时应有“ FAPRA(Flash-aware Page Replacement Algorithm)”说明. 2.introduction : 没有介绍目前page  replacement  algorithms  designed  for  NAND  flash memory. 3.Ralate Work :The least recently used algorithm (LRU) -->LRU(The…

Amazon CEO and brilliant prick Jeff Bezos seems to have lost his magic touch lately. Investors, employees, and authors are all lashing out against different elements of Bezos' business practices. Don't worry, Jeff: Amazon has just the thing to improv…

Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task times, most recent failure: Lost task , hadoop7, executor ): ExecutorLostFailure (executor exited caused by one of the running tasks) Reason: Container killed by YARN…

The Performance Zone is brought to you in partnership with New Relic. Quickly learn how to use Docker and containers in general to create packaged images for easy management, testing, and deployment of software. It has sometimes been suggested that S…

Textbook: <计算机组成与设计——硬件/软件接口>  HI <计算机体系结构——量化研究方法>       QR 这是youtube上一个非常好的memory system的课. 1. Physical Memory 这里我们重点关注DRAM 从概念上分为:Channel > DIMM > Rank > Chip > Bank > Row/Column Channel:一个主板上可能有多个插槽,用来插多根内存.这些槽位分成两组或多组,组内共享物…

BACKGROUND OF THE INVENTION A conventional virtual-machine monitor (VMM) typically runs on a computer and presents to other software the abstraction of one or more virtual machines. Each virtual machine may function as a self-contained platform, runn…

原文地址:http://www.codeproject.com/Tips/1023621/SQL-Performance-Improvement-Techniques This article provides various options to improve the performance in database. 1) Re-Write Query: If any query is taking much time to execute then the first step is to…

Ceilometer的数据采集agent会定期对nova/keystone/neutron/cinder等服务调用其API的获取信息,默认是20秒一次, # Polling interval for pipeline file configuration in seconds. # (integer value) #pipeline_polling_interval = 这在大规模部署中会对OpenStack服务节点造成很大压力,增加节点CPU负载. 在Ceilometer的L版本中有一个针对性…