前言: 什么是RDMA? 简单来说,RDMA就是指不通过操作系统(OS)内核以及TCP/IP协议栈在网络上传输数据,因此延迟(latency)非常低,CPU消耗非常少. 下面给出一篇简单介绍RDMA的文章之中英文对照翻译. Introduction to Remote Direct Memory Access (RDMA) | RDMA概述 1. What is RDMA? | 什么是RDMA Direct memory access (DMA) is an ability of a devic…
COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION In terms of commercial products, the two common approaches to providing a multiple-processor system to support applications are SMPs and clusters. For some years, another…
ARM: STM32F7: hardfault caused by unaligned memory access ARM: STM32F7: 由未对齐的内存访问引起的hardfault异常 Information in this knowledgebase article applies to: 这个知识库文章中的信息适用于: MDK-ARM Version 5 SYMPTOM 症状 If a STM32F7xx microcontroller is used with an external…
From: https://stackoverflow.com/questions/16612444/catch-a-memory-access-violation-in-c In C++, is there a standard way (or any other way, for that matter) to catch an exception triggered by a memory access violation? For example, if something went…
org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: The max direct memory is likely too low. Either increase it (by adding -XX:MaxDirectMemorySize=g -XX:+UseLargePages to your containers startup args) or disable direct allocati…
ByteBuffer的源码中有这样一段注释: A byte buffer is either direct or non-direct. Given a direct byte buffer, the Java virtual machine will make a best effort to perform native I/O operations directly upon it. That is, it will attempt to avoid copying the buffer'…
在看源代码时,发现codeigniter框架的控制器中,总是加上这样一段话: if(!defined('BASEPATH'))exit('No direct script access allowed');1刚接触codeigniter,一直没有领会它的作用,后来通过查资料发现其作用是: 为了防止跨站攻击,直接通过访问文件路径用的 另外要注意,这里定义的是:defined()而不是define(),如果你误将defined写成define,将会报一下错误: A PHP Error was enc…
https://mahmoudhatem.wordpress.com/2016/11/07/tracing-memory-access-of-an-oracle-process-intel-pintools/ November 7, 2016 Mahmoud Hatem troubleshoting This blog post is motivated by a conversation with Frits Hoogland on his great blog post The curiou…
