对于这个问题的一个答案是,首先我们会有user/kernel边界,在上面是应用程序,在下面是运行在kernel mode的程序。 其中一个选项是让整个操作系统代码都运行在kernel mode。大多数的Unix操作系统实现都运行在kernel mode。比如,XV6中,所有的操作系统服务都在kernel mode中,这种形式被称为Monolithic Kernel Design(宏内核)。
Hui MiaoComputer Science JournalsInternational Journal of EngineeringHui Miao,( 2011). Analysis of Practicality and Performance Evaluation for Monolithic Kernel and Micro-Kernel Operating Systems, International Journal of Engineering (IJE), Volume (5) : Issue (4)...
Monolithic hypervisors like Xen and KVM run most, if not all of the hypervisor in Ring 0 of the host. Typically we call this Ring -1. This picture is far more complicated when you include System Management Mode (SMM) which adds two more Ring 0s, so lets pretend they do not exist ...
the number of hosts will grow faster than it will with a monolithic architecture. In the AWS environment, there may even be microservices that do not require all the resources of even the smallest EC2 instance type. This results in over-provisioning and increased costs. If services are implemen...
• VM-FW-R4: For both subnet-level and kernel-based virtual firewalls, it is preferable that the firewall supports rules using higher-level components or abstractions (e.g., security group) in addition to the basic 5-tuple (source/destination IP address, source/destination ports, protocol)...
What is the difference between qiankun and single-spa? Based onsingle-spa, Qiankun strengthens the micro-application integration capability, but abandons the micro-module capability. Therefore, the difference between them is that the granularity of themicroservice is, the granularity that Qiankun can...
By porting compilers from a monolithic architecture to microservice architecture, tests of a single microservice need to be executed only over that single microservice and not over the whole application. Because these two processes are completely independent. We have prepared a fully automated CI/CD...
However, applying access control in the MSA is difficult to apply in a monolithic architecture because of its distributed nature. Furthermore, building a comprehensive framework to establish security between microservice is tough work to achieve because it is very difficult to integrate and use ...
Additionally, deploying multiple small programs is significantly simpler than deploying a single large application (e.g., monolithic architecture). Large websites require this characteristic to deploy their applications on the cloud to cope with sudden traffic and resource demand, such as during an ...