C Configuring Large Memory Optimization This appendix provides information for configuring memory optimization with large page tables on the Linux operating system, using Hugepages. It contains the following topics: Overview of HugePages Restrictions…

redis报错Windows error 0x70 redis 嫌弃你内存不够了,就给你不开第二个实例. The Windows version of Redis allocates a large memory mapped file for sharing the heap with the forked process used in persistence operations.这句话说的很明白了 解决办法: 1:改redis.windows.conf中的maxheap参数 maxhea…

The prioritization of large memory page mapping is a function of the access bits in the L1 page table. In a first phase of operation, the number of set access bits in each of the L1 page tables is counted periodically and a current count value is cal…

Symptom You have questions related to the SAP HANA memory. You experience a high memory utilization or out of memory dumps. Environment SAP HANA Cause 1. Which indications exist for SAP HANA memory problems?2. How can I collect information about the…

目录 . Rowhammer Introduction . Rowhammer Principle . Track And Fix 1.  rowhammer introduction 今天的DRAM单元为了让内存容量更大,所以在物理密度上更紧凑,但这样很难阻止临近的内存单元之间的电子上的互相影响,在足够多的访问次数后可以让某个单元的值从1变成0,或者相反 code example code1a: mov (X), %eax // Read from address X mov (Y), %eb…

Virtual Address Space Memory Pools Memory Performance Information Virtual Memory Functions Heap Functions File Mapping Large Memory Support Global and Local Functions Standard C Library Functions Comparing Memory Allocation Methods ==================…

Oracle Database creates and uses memory structures for various purposes. For example, memory stores program code being run, data that is shared among users, and private data areas for each connected user. Two basic memory structures are associated wi…

原文链接:http://www.linuxjournal.com/article/6556?page=0,0 An earlier article [“Memory Leak Detection in Embedded Systems”, LJ, September 2002, available atwww.linuxjournal.com/article/6059] discussed the detection of memory leaks when using C as the pro…

BACKGROUND Memory allocation systems assign blocks of memory on request. A memory allocation system employs an allocator to receive relatively large blocks of memory from an operating system and allocate that memory to satisfy memory requests. Upon r…

使用RDMA, 必然关系到内存区域(Memory Region)的注册问题.在本文中,我们将以mlx5 HCA卡为例回答如下几个问题: 为什么需要注册内存区域? 注册内存区域有嘛好处? 注册内存区域的实现过程 1. 为什么需要注册内存区域? 首先,我们知道,由于DMA设备只访问物理内存地址,因此,DMA引擎需要主机系统内存的物理地址连续,这一点无可非议,因为如果物理地址不连续,即便DMA引擎知道buffer开始的地址(虚拟地址)和buffer长度,也不知道怎么搬数据.试想一下,如果让DMA引擎知…