RTC的英文全称是Real-Time Clock,翻译过来是实时时钟芯片. RTC是PC主板上的晶振及相关电路组成的时钟电路的生成脉冲主板上的晶振及相关电路组成的时钟电路的生成脉冲,RTC经过8254电路的变频产生一个频率较低一点的OS(系统)时钟TSC,系统时钟每一个cpu周期加一周期加一,每次系统时钟在系统初起时通过RTC初始化。8254本身工...
support it.#hwtimestamp *# 通过使用hwtimestamp指令启用硬件时间戳# Increase the minimum number of selectable sources required to adjust# the system clock.#minsources 2# Allow NTP client access from local network.#allow 192.168.0.0/16#允许同步的网段# Serve time even if not synchronized to a ti...
see the man pages# ntp.conf(5), ntp_acc(5), ntp_auth(5), ntp_clock(5), ntp_misc(5), ntp_mon(5).driftfile /var/lib/ntp/drift# Permit time synchronization with our time source, but do not# permit the source to query or modify the service on this system.restrict default nomodify...
如果你看到System clock synchronized:值设置为no,那么timesyncd服务可能处于非活动状态。因此,只需重启服务并看下是否正常。 复制 $sudosystemctlrestartsystemd-timesyncd.service 1. 现在检查timesyncd服务状态: 复制 $sudosystemctlstatussystemd-timesyncd.service ●systemd-timesyncd.service-NetworkTimeSynchronizati...
server 127.0.0.1 local clock fudge 127.0.0.1 stratum 10 3) 敲击a键进入vi编辑方式:键入NTP服务器的IP地址,修改成如下显示(假设202.112.88.88是NTP服务器IP地址): server 202.112.88.88 fudge 202.112.88.88 stratum 0 4) 敲击Esc键回到vi命令方式,敲击 :wq ,保存修改并结束vi 编辑; ...
25 Nov 18:13:44 ntpdate[2158]: no server suitable for synchronization found $ service ntpd start $ chkconfig ntpd on $ clock -w 还可以写进定时任务中,以做定时的时钟同步: $ crontab -e 05 * * * * /usr/sbin/ntpdate > /dev/null 2>&1 ...
# Enable kernel synchronization of the real-time clock (RTC). rtcsync # Enable hardware timestamping on all interfaces that support it. #hwtimestamp * # Increase the minimum number of selectable sources required to adjust # thesystem clock. ...
ntpdate ntp.sjtu.edu.cn正常返回如下:25 Nov 18:14:34 ntpdate[2164]: adjust time server 202.120.2.101 offset -0.006107 sec错误返回如：25 Nov 18:13:44 ntpdate[2158]: no server suitable for synchronization found service ntpd start$ chkconfig ntpd on$ clock -w 还可以写进定时...
# Record the rate at which the system clock gains/losses time. driftfile /var/lib/chrony/drift # Enable kernel synchronization of the real-time clock (RTC). makestep 1.0 3 # Enable tracking of system boot and reboot times. rtcsync # Enable hardware timestamping on all interfaces that suppo...
(System Clock)硬件时钟是指嵌在主板上的特殊的电路,它的存在就是平时我们关机之后还可以计算时间的原因系统时钟就是操作系统的kernel所用来计算时间的时钟.它从1970年1月1日00:00:00UTC时间到目前为止秒数总和的值 在Linux下系统时间在开机的时候会和硬件时间同步(synchronization),之后也就各自独立运行了 那么既然...