FreeBSD Top States
转自:http://blog.csdn.net/fcoolx/article/details/4412196
select |
Process is blocked in the select(2) syscall. Usually means it's waiting for external input (network, terminal, file updated, things like that). select only supports waiting for something related to a file descriptor (e.g., socket, tty, vnode).
nanslp |
Process is blocked in the nanosleep(2) syscall, which is an explicit request to pause for a certain amount of time. Hard to generalize this one. It should be infrequent, or it might be used by something implementing its own polling.
kserel |
Process is blocked waiting for an event to trigger a KSE upcall. This isn't easy to explain in a few words, but you can read kse(2) for most of the relevant details. Usually means the process is waiting for external input (similar to select).
RUN |
Process is ready to run but has been suspended while another process is running.
pause |
Process is blocked in the pause(2) or sigsuspend(2) syscall. It might be waiting for a signal, or you might see this if another thread is running and the main thread is waiting for all other threads to end.
lockf |
Process is blocked waiting for a file lock to be released. Could be an flock(2) lock or an fcntl(2)/F_SETLK record lock.
kqread |
Process is blocked in the kqueue(2) syscall. This is similar to select(2)--waiting for external input. kqueue is more efficient than select and supports several other events that can be waited on.
sbwait |
Process is waiting for a socket buffer to be filled or emptied.
pipered |
Process is waiting for data to arrive on a pipe ("rd" is short for read).
tips:
引用自:http://www.webhostingtalk.com/showthread.php?t=583672
FreeBSD Top States的更多相关文章
- 【8.0.0_r4】AMS分析(十七)(ActivityManagerService.java下)
代码位于frameworks/base/services/core/java/com/android/server/am/,一共有七十个文件. Java源码位于package com.android. ...
- 【转】Linux Top 命令解析 比较详细
TOP命令是Linux下常用的性能分析工具,能够实时显示系统中各个进程的资源占用状况. TOP是一个动态显示过程,即可以通过用户按键来不断刷新当前状态.如果在前台执行该命令,它将独占前台,直到用户 ...
- Linux Top 命令解析 比较详细
[尊重原创文章出自:http://www.jb51.net/LINUXjishu/34604.html] TOP是一个动态显示过程,即可以通过用户按键来不断刷新当前状态.如果在前台执行该命令,它将独占 ...
- Top 10 Universities for Artificial Intelligence
1. Massachusetts Institute of Technology, Cambridge, MA Massachusetts Institute of Technology is a p ...
- FreeBSD 10 发布
发行注记:http://www.freebsd.org/releases/10.0R/relnotes.html 下文翻译中... 主要有安全问题修复.新的驱动与硬件支持.新的命名/选项.主要bug修 ...
- Codeforces Round #327 (Div. 2) E. Three States
题目链接: 题目 E. Three States time limit per test:5 seconds memory limit per test:512 megabytes 问题描述 The ...
- Linux中监控命令top命令使用方法详解
收集了两篇关于介绍Linux中监控命令top命令的详细使用方法的文章.总的来说,top命令主要用来查看Linux系统的各个进程和系统资源占用情况,在监控Linux系统性能方面top显得非常有用,下面就 ...
- TOP命令详解
TOP是一个动态显示过程,即可以通过用户按键来不断刷新当前状态.如果在前台执行该命令,它将独占前台,直到用户终止该程序为止.比较准确的说,top命令提供了实时的对系统处理器的状态监视.它将显示系统中C ...
- top工具
top 显示进程所占系统资源 能够实时显示系统中各个进程的资源占用状况,类似于Windows的任务管理器. top命令打印出了很多信息,包括系统负载(loadaverage).进程数(Tasks).c ...
随机推荐
- 8VC Venture Cup 2016 - Elimination Round G. Raffles 线段树
G. Raffles 题目连接: http://www.codeforces.com/contest/626/problem/G Description Johnny is at a carnival ...
- 使用eclipse远程调试weblogic
配置weblogic远程调试之前,需要做这几个工作: 1) 安装weblogic服务器,然后创建一个域: 2) 安装eclipse集成IDE: 3) eclipse中包含发布 ...
- 【荐】利用NAT、Host-Only双虚拟网卡,实现Virtual Box中CentOS5.x联网
一.虚拟机与主机互联,通常有三种方式,详细介绍请看: VMware虚拟机三种网络模式(Bridged,Nat,Host-only)区别详解 二.通过网络共享,Host-Only联网,详细案例请看: W ...
- Vue 小项目的最佳实践
项目简介 目前一期只是为App内某个模块资讯模块文章的分享和APP下载,后续还会有更多的功能,为了项目可扩展.可伸缩结合了我以前的实践搭建了此项目项目地址,如果这个简单的项目能给您带来帮助请给小哥哥⭐ ...
- socket心跳包机制实践与理解
实现Socket心跳包主要分为两大类,第一采用tcp自带的KeepAlive,第二是自定义心跳包,恰巧我在产品VICA中都使用过,下面就这两种心跳包机制谈谈个人的理解与感受. 首先第一种KeepAli ...
- Sqlserver数据库还原.bak文件失败的两个问题
一.SQL Server数据库备份还原后,在数据库名称后会出现“受限制访问”字样 解决方案:将数据库限制访问改为:SINGLE_USER 数据库-->属性-->选项-->状 ...
- Go -- FileManage 自建云盘
一.介绍 Caddy,用Go写的一款相当优秀的Web服务器软件,它有不少很有特色的功能,国内目前来说用的不多,不过也逐渐有越来越多的人知道了,它有个特色的插件功能,其中一款插件是FileManager ...
- iOS:iOS中的几种动画
本文来自收藏,感谢原创博主. iOS中的动画 摘要 本文主要介绍核iOS中的动画:核心动画Core Animation, UIView动画, Block动画, UIImageView的帧动画. 核心动 ...
- LINUX提权笔记
没啥技术含量,一种思路,让某些得到root权限webshell的童鞋可以快点拿到权限. 某日拿到某站webshell,RedHat 系统,Tomcat程序是root身份启动的,webshell当然也拥 ...
- Android APP内存优化之图片优化
网上有很多大拿分享的关于Android性能优化的文章,主要是通过各种工具分析,使用合理的技巧优化APP的体验,提升APP的流畅度,但关于内存优化的文章很少有看到.在Android设备内存动不动就上G的 ...