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云计算与大数据

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Linux Netlink
When you are writing a linux application that needs either kernel to userspace communications or userspace to kernel communications, the typical answer is to use ioctl and sockets.
heidsoft
2023-03-18
1.2K0
Linux | 负载均衡理解之调度了解
每个处理器各自设置一个调度队列,从而可能出现有的处理器的就绪队列进程很多而另一个处理器上的就绪队列任务很少的现象。
heidsoft
2023-03-18
4350
kernel|network| Linux Networking Stack: Sending Data
This blog post explains how computers running the Linux kernel send packets, as well as how to monitor and tune each component of the networking stack as packets flow from user programs to network hardware.
heidsoft
2022-04-18
1.9K0
kernel | interrupt| driver
(2)如何解决中断处理程序执行过长和中断丢失的问题: Linux 将中断处理过程分成了两个阶段,也就是上半部和下半部。 上半部用来快速处理中断,它在中断禁止模式下运行,主要处理跟硬件紧密相关的或时间敏感的工作。也就是我们常说的硬中断,特点是快速执行。 下半部用来延迟处理上半部未完成的工作,通常以内核线程的方式运行。也就是我们常说的软中断,特点是延迟执行。
heidsoft
2022-04-18
6750
bpf | eXpress Data Path| XDP
XDP or eXpress Data Path provides a high performance, programmable network data path in the Linux kernel as part of the IO Visor Project. XDP provides bare metal packet processing at the lowest point in the software stack which makes it ideal for speed without compromising programmability. Furthermore, new functions can be implemented dynamically with the integrated fast path without kernel modification. Other key benefits of XDP includes the following:
heidsoft
2022-04-18
6910
bpf| 系统分析工具
eBPF is a revolutionary technology with origins in the Linux kernel that can run sandboxed programs in an operating system kernel. It is used to safely and efficiently extend the capabilities of the kernel without requiring to change kernel source code or load kernel modules.
heidsoft
2022-04-18
1.2K0
Understanding Kubernetes Kube-Proxy
Kubernetes is a complicated system with multiple components interacting with each other in complex ways. As you may already know, Kubernetes is made of master and node components.
heidsoft
2019-09-10
2K0
Linux CPU 如何判断忙
摘录自:http://www.ruanyifeng.com/blog/2016/12/user_space_vs_kernel_space.html
heidsoft
2018-10-16
5.1K0
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