I'm running linux Fedora 24 and I want to use gpsd to give the received signals to ntpd via the shared memory. I think that my configuration of ntpd is OK, but ntpq display a zero value for "reach" for SHM(0) and SHM(1). I suspect that anything is wrong in the shared memory communication. cgps shows that the signals are arriving. I have found no log entry related to this issue.
Here you can see the relevant parts of ipcs and lsof output, related to the mentioned defective communication.
What do I have to do in order the solve this problem ? Thanks a lot !
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x4e545030 0 root 600 80 2
0x4e545031 32769 root 600 80 2
0x4e545032 65538 root 666 80 1
0x4e545033 98307 root 666 80 1
0x4e545034 131076 root 666 80 1
0x4e545035 163845 root 666 80 1
0x4e545036 196614 root 666 80 1
0x4e545037 229383 root 666 80 1
0x47505344 262152 root 666 8068 1
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
gpsd 849 nobody DEL REG 0,5 262152 /SYSV47505344
gpsd 849 nobody DEL REG 0,5 229383 /SYSV4e545037
gpsd 849 nobody DEL REG 0,5 196614 /SYSV4e545036
gpsd 849 nobody DEL REG 0,5 163845 /SYSV4e545035
gpsd 849 nobody DEL REG 0,5 131076 /SYSV4e545034
gpsd 849 nobody DEL REG 0,5 98307 /SYSV4e545033
gpsd 849 nobody DEL REG 0,5 65538 /SYSV4e545032
gpsd 849 nobody DEL REG 0,5 32769 /SYSV4e545031
gpsd 849 nobody DEL REG 0,5 0 /SYSV4e545030
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ntpd 898 ntp DEL REG 0,5 32769 /SYSV4e545031
ntpd 898 ntp DEL REG 0,5 0 /SYSV4e545030
