全部博文(22)
发布时间:2013-05-15 16:07:41
Linux SNMP OID’s for CPU,Memory and Disk Statistics SNMP stands for Simple Network Management Protocol and consists of three key components: managed devices, agents, and network-management systems (NMSs). A managed device is a node that has an SNMP agent and resides on a managed n.........【阅读全文】
发布时间:2013-02-01 16:05:45
通常,kernel的timer心跳频率是,100,250,1000,也就是时钟中断的最小频率是1ms,那么gettimeofday这种系统函数,是如何获取更精确的时钟呢?usec是从何而来?gettimeofday()对应的syscall,会调用do_gettimeofday();getnstimeofday()--->timekeeping_get_ns()-->clocksource.read();platform初始化时,通过 clocks.........【阅读全文】
发布时间:2012-12-12 14:24:39
点击(此处)折叠或打开#!/bin/bash# Set maximum conntrack table sizeecho 100 > /proc/sys/net/netfilter/nf_conntrack_max# Overflow conntrack tablefor i in `seq 1 254`do echo "$i " for j in `seq 1 100` do conntrack -I --protonum tcp --timeout 3600 -s 1.1......【阅读全文】