| Summary: | minpoll and maxpoll only communication but not really synchronize,isn't it? | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | muahao <muahao> |
| Component: | ntp | Assignee: | Miroslav Lichvar <mlichvar> |
| Status: | CLOSED NOTABUG | QA Contact: | qe-baseos-daemons |
| Severity: | low | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.2 | ||
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-10-24 06:35:46 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
There is an option called "tinker stepout" (described in the ntp_misc(5) man page), which controls how long ntpd waits before stepping the clock. The default value is 900 seconds (15 minutes). It's mainly useful to avoid steps when the network is congested and the NTP measurements include a large error. If you need a faster reaction, you can add "tinker stepout 300" or similar to ntp.conf. |
## MY QUESTION：minpoll and maxpoll only communication but not really synchronize,isn't it? Hello my friends,I have a problem want to know,why ntp syncorized from uppper stratum NTP server so slowly?? minpoll ,maxpoll at my view is not really "synchronize and do adjust system's time to correct ",but only "communication with upper NTP server and after almost 10-20mins really do synchronize and adjust system's time by upper NTP server" __My question is can I adjust my client server's parameter to make my client to synchronize from upper NTP server frequently?__ ## Steps to Reproduce: Bellow is just a test ,so only one NTP server was configured,just want to know NTP's synchronization behavior NOW: #date Mon Oct 24 10:54:55 CST 2016 reset date time: #date -s "2016-10-24 10:52" after about 10min: #ntpq -np remote refid st t when poll reach delay offset jitter ============================================================================== 10.101.242.8 10.233.7.230 3 u 4 64 377 0.102 175930. 0.070 after about 10min: #ntpq -np remote refid st t when poll reach delay offset jitter ============================================================================== *10.101.242.8 10.233.7.230 3 u 4 64 377 0.102 175930. 0.070 after about 10min: time was adjusted by NTP