linux performance counters

NPTL becomes the GLIBC line threading, how its performance is subject to a lot of people's attention. In this paper, the performance of NPTL and linuxthreads is compared, and the effects of hyper-threading and kernel-preemption on threading performance are comprehensively evaluated. First, the preface In the Linux 2.

Guide When you log on to a Linux server in order to solve a performance problem: What should you check in the first minute? By running the following 10 commands, you can get a rough idea of the processes and resource usage that the system is running within 60 seconds. By looking at the error messages and the resource saturation of these commands (they are all easy to understand), you can the

Nmon is the abbreviation for Nigel's performance Monitor for Linux on POWER, x86, x86_64, Mainframe Now ARM (Raspberry Pi), meaning Nigel (n Mon is the author of Nigel Griffiths) 's Linux performance detector.This system administrator, tuner, benchmark tool will provide you with a number of important

single drive. 4. Chunk size, according to the Linux raid wiki, the data segment size (Chunk size) refers to the smallest unit of data written to the device. The optimized data segment size depends on the speed of the input/output operation and the size of the associated file. If you write a large file, you can expect to see a lower overhead as long as you make sure that the data segment is quite large, and the array of primary storage small files is

Performance is not good how to do? I'll go through the list.Brendan Gregg is a senior performance architect for Netflix and a renowned performance tuning expert. The "Top of performance: insight into systems, enterprise and cloud Computing" is a book that can be said to be the culmination of the

1, the purpose of performance analysis1) Identify system performance bottlenecks (hardware, software)2) Provide performance optimization scheme (upgrade hardware, improve system structure)3) to achieve reasonable hardware and software configuration4) Maximize the balance of system resource usage.2. Factors that affect performance1) CPU2) Memory3) hard disk (1, us

A Linux operating system-based server runs at the same time, it will also characterize a variety of parameter information. In general, OPS and system administrators are extremely sensitive to these data, but these parameters are also important to developers, especially when your program is not working properly, and these clues often help to locate the tracking problem quickly.Here are just a few simple tools to view the relevant parameters of the syst

JoeZonkerBrockmeier mentioned five tools to monitor and improve Linux system performance in an article on the Linux Foundation website. These five tools cover kernel optimization, network monitoring, and system monitoring. they are KDESystemMonitor, Dstats, TheSysstatAuite, network monitoring using Ifstat, and Li Joe Zonker Brockmeier mentioned five tools to moni

As we all know, there are many factors that affect the network, including latency, conflict, and blocking. Next, let's take a look at the specific Network situation under Linux performance monitoring, and add some of our previous articles. We hope to provide more help to you in terms of Linux performance monitoring.Mos

Another quarter has passed. Linus Torvalds also released the latest official Linux Kernel version 2.6.35 on schedule. This is the main line version of Linux kernel mainstream ). Linux Kernel 2.6.35 has the following features: ◆ Receive packet steering receiving package control from Google) ◆ Receive flow steering receiving stream control from Google) ◆ Memory com

executes a target, however, Netfilter can do more. I have heard of network accelerators for a long time, but I have always felt that optimization of some algorithms by software is definitely impossible to increase the performance statistics by an order of magnitude. I must have some hardware help, even a Cisco professional-level device uses a large number of ASIC chips to forward packets. In fact, it uses a hardware cache mechanism. If these hardware

Article Title: Linux-based performance monitoring competition and implementation strategy. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　Basic concepts of

At work fragmented wrote some blogs, summed up some knowledge, of course, from the angle of operation. Things a lot of chaos, idle whim, these things can be hit at a point, if you can have a thing to string up all the content and have a theme is not wonderful, but also easy to read and read, like a website has content after need an index home, haha, and then have this sticky blog post.For the topic, I like to study business architecture and large concurrency related knowledge, it is set as "High

ObjectiveThis article shares with you: Linux system common performance anomalies, how to navigate to the process level. To put it simply, there is a problem with Linux performance, and we need to determine which processes affect the performance of Linux.This article deals pr