Linux Kernel4.10引入了Intel RDT实现架构,基于resctrl文件系统提供了 L3 CAT (Cache Allocation Technology),L3 CDP(Code and Data Prioritization),以及L2 CAT。并且Linux Kernel 4.12进一步实现支持了MBA(Memory Bandwidth Allocation)内存带宽分配技术。 Intel RDT提供了一系列分配(资源控制)能力,包括缓存分配技术(Cache...
The documentation is implying that I should be able to customize L3 / LLC cache allocation. But in reality I couldn't find make it work using documentations. The standard tool would be RDT / pqos tools, but pqos only lists L2 level cache, it says that L3 is not settable, it ...
这个技术叫CAT(Cache Allocation Technology),最早在Xeon E5 v3上引入的。CAT提供了以软件编程的方式,给程序,线程,VM,container分配CPU缓存空间的能力。 后来在Xeon E5 v4系列cpu上,又出了一个增强版CAT,叫CDP(Code and Data Prioritization)。顾名思义,它可以给code和data分别提供不同的cache空间,进一步增加了...
Cache allocation technologyTop-down analysis methodologyMany applications running on high-performance computing systems share limited resources such as the last-level cache, often resulting in lower performance. Intel recently introduced a new control mechanism, called cache allocation technology (CAT), ...
Hi, I am interested in testing out the new Intel Cache Allocation Technology. However I have been unable to find the specifications of CAT functionality provided by the 6 processors. I would like to know beforehand, the capabilities of each processor before purchasi...
+++ This bug was initially created as a clone of Bug #1289368 +++ Kernel support for CAT requires libvirt support: Bug 1288964 - [Intel 7.3 FEAT] Enable Cache Allocation Technology (CAT) Comment 2 Sahid Ferdjaoui 2016-01-19 15:58:48 UTC A spec will have to be addressed, after ...
Intel® CAT Technology Intel® DDIO Technology Intel® CHA Architecture Intel® Non-Temporal Hit Technology CACHE 场景化实践分析 真正的技术不是屠龙之术,而是实打实能在实际工作场景中使用的技术,CACHE 专题提供了多个场景下的实践使用教程,让开发者学以致用,更贴近真实的环境, 专题包含了以下多个场景: ...
A number of usage models are possible given the flexible interfaces provided by the Cache Allocation Technology (CAT) feature, including prioritization of important applications and isolation of applications to reduce interference. How Does CAT Work?
Figure 2:Web server performance increase by providing additional cache in a noisy environment (with Cache Allocation Technology (CAT)). This is one of many possible examples of applying CAT within the data center. Additional details on this test configuration, results, whitepapers, video...
Intel's “Cache Allocation Technology” (CAT) allows the LLC to limit which cores can can access different parts of the cache. Since we often want to pin performance sensitive tasks to cores anyway, this allows us to divide up the cache on a per-task basis. Intel's April 2015 whitepaper...