Processor Groups https://docs.microsoft.com/en-us/windows/desktop/ProcThread/processor-groups The 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions of Windows support more than 64 logical processors on a single computer. This…

如果你只知道CPU这么一个概念,那么是无法理解CPU的拓扑的.事实上,在NUMA架构下,CPU的概念从大到小依次是:Node.Socket.Core.Logical Processor. 随着多核技术的发展,我们将多个CPU封装在一起,这个封装一般被称为Socket. 也就是物理处理器插上的地方, 看起来像这样: Socket中的每个核心被称为Core. 为了进一步提升CPU的处理能力,Intel又引入了HT(Hyper-Threading,超线程)的技术,一个Core打开HT之后,在OS看来就…

[Physical (Raw) Versus Logical Backups] Physical backups consist of raw copies of the directories and files that store database contents. This type of backup is suitable for large, important databases that need to be recovered quickly when problems o…

原文地址: http://www.daniloaz.com/en/differences-between-physical-cpu-vs-logical-cpu-vs-core-vs-thread-vs-socket/ 水平所限,翻译不准确的地方望指正. 当我们使用像 nproc或者 lscpu等命令 来在CPU级别上获取计算机的架构和性能的时候,我们常常会发现我们不能够正确的解释这些命令的结果,原因在于我们搞不清楚一些术语的含义,例如: 物理CPU (physical CPU). 逻辑CPU(…

# 查看物理CPU个数    (chip) 物理cpu数:主板上实际插入的cpu数量,可以数不重复的 physical id 有几个(physical id)cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l # 查看每个物理CPU中core的个数    (core) cpu核数:单块CPU上面能处理数据的芯片组的数量,如双核.四核等 (cpu cores)cat /proc/cpuinfo| grep "cpu…

3M Cache, up to 2.90 GHz Specifications Ordering and Compliance Essentials     Product Collection 5th Generation Intel® Core™ i5 Processors Code Name Products formerly Broadwell Vertical Segment Mobile Processor Number i5-5300U Status Launched Launch…

1.物理读:从disk到buffer cache.其产生的主要原因是: (1) 在数据库高速缓存中不存在这些块 (2) 全表扫描 (3)磁盘排序 2.oracle中读写disk的单位是block.而用户需要的是其中几行或几列,从buffer cache中提取行(列)的过程,就是逻辑读 (1)当前读:读取block中的最新数据 (2)一致读:为保证一致性,buffer cache中的block 都会有最后一次修改时的scn, 当某个进程读取block时,把进程的scn与block的scn比较 进程…

What is the difference between Processor, Core, Logical Processor ? Processor : It’s the physical components that comes with server, responsible of all processing operations, a server can have more than one processor (1, 2…), we talk so about a multi…

Techniques for configuring a hypervisor scheduler to make use of cache topology of processors and physical memory distances between NUMA nodes when making scheduling decisions. In the same or other embodiments the hypervisor scheduler can be configur…

不均匀的Windows处理器编组 之前写过一篇文章,关于SQLSERVER能识别多少个逻辑CPU的,前些天在论坛里有人问Windows处理器编组是如何划分的?? SQLSERVER到底能识别多少个逻辑CPU? 在帖子给出了两篇文章,我们现在来看一下 http://social.technet.microsoft.com/Forums/zh-CN/17f34500-08d5-4302-a484-3ce487899a83/windows-2008-r2sql-server-2005cpu?forum…