sanity_freq_limit PTP时钟和系统monotonic时钟频率偏差限制,单位ppb200000000(20%) initial_delay 链路延迟初始值,单位ns。设置为0的话,程序会先测量0ntpshm_segment ntpshm私服使用的SHM段的数目0udp6_scope IPv6多播报文的范围,默认为全局范围0x0Euds_address UNIX domain socket地址/var/run/ptp4l dscp_event ...
一旦伺服处于锁定状态( s2 ),除非 pi_offset_const 在配置文件中将该选项设置为正值,否则时钟将不会步进(仅缓慢调整)。该 freq 值是时钟的频率调整,以十亿分之一 (ppb) 为单位。路径延迟值是从主站发送的同步消息的估计延迟(以纳秒为单位)。端口 0 是用于本地 PTP 管理的 Unix 域套接字。端口 1 是 eth...
first_step_threshold 第一次步进时钟的阈值,超过阈值,直接调整时钟时间,单位秒 0.00002 max_frequency 最大频率调整值,单位ppb 900000000 (90%) sanity_freq_limit PTP时钟和系统monotonic时钟频率偏差限制,单位ppb 200000000 (20%) initial_delay 链路延迟初始值,单位ns。设置为0的话,程序会先测量 0 ntpshm_segmen...
ptp4l[-AEP246HSLmqsv] [-fconfig] [-pphc-device] [-lprint-level] [-iinterface] [long-options]... DESCRIPTION ptp4lis an implementation of the Precision Time Protocol (PTP) according to IEEE standard 1588 for Linux. It implements Boundary Clock (BC), Ordinary Clock (OC), and Transpar...
(ppb). This is an additional limit to the maximum allowed by the hardware. When set to 0, the hardware limit will be used. The default is 900000000 (90%). This option used to be called .BR pi_max_frequency . .TP .B sanity_freq_limit ...
.B sanity_freq_limit The maximum allowed frequency offset between uncorrected clock and the system monotonic clock in parts per billion (ppb). This is used as a sanity check of the synchronized clock. When a larger offset is measured, a warning message will be printed and the servo wi...
*/ case SERVO_LOCKED: case SERVO_LOCKED_STABLE: clockadj_set_freq(clock->clkid, -ppb); if (clock->clkid == CLOCK_REALTIME) sysclk_set_sync();44 changes: 39 additions & 5 deletions 44 port.c Original file line numberDiff line numberDiff line change @@ -1110,10 +1110,12 @@ ...