LINUX NTP时钟同步延迟解决方案分析
2019-06-11 17:04
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同步没有延迟是这样的,IP是假的,安全起见
[root@machine-js-app3 ~]# ntpdate -d 80.12.64.89 11 Jun 15:14:04 ntpdate[19272]: ntpdate 4.2.4p8@1.1612-o Tue Jul 6 21:50:29 UTC 2010 (1) Looking for host 80.12.64.89 and service ntp host found : 80.12.64.89 transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) server 80.12.64.89, port 123 stratum 4, precision -24, leap 00, trust 000 refid [80.12.64.89], delay 0.02609, dispersion 0.00000 transmitted 4, in filter 4 reference time: e0a8a80e.8aecd287 Mon, Jun 10 2019 17:57:34.542 originate timestamp: e0a9d33c.62d137d5 Tue, Jun 11 2019 15:14:04.386 transmit timestamp: e0a9d33c.627cb6d2 Tue, Jun 11 2019 15:14:04.384 filter delay: 0.02612 0.02611 0.02609 0.02611 0.00000 0.00000 0.00000 0.00000 filter offset: 0.001024 0.001015 0.001019 0.001006 0.000000 0.000000 0.000000 0.000000 delay 0.02609, dispersion 0.00000 offset 0.001019 11 Jun 15:14:04 ntpdate[19272]: adjust time server 80.12.64.89 offset 0.001019 sec
[root@machine-app1 ~]# ntpdate -d 8012.64.89 11 Jun 15:13:31 ntpdate[9551]: ntpdate 4.2.4p8@1.1612-o Tue Jul 6 21:50:29 UTC 2010 (1) Looking for host 80.12.64.89 and service ntp host found : 80.12.64.89 transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) receive(80.12.64.89) transmit(80.12.64.89) server 80.12.64.89, port 123 stratum 4, precision -24, leap 00, trust 000 refid [80.12.64.89], delay 0.02605, dispersion 0.00003 transmitted 4, in filter 4 reference time: e0a8a80e.8aecd287 Mon, Jun 10 2019 17:57:34.542 originate timestamp: e0a9d32c.bbd9260e Tue, Jun 11 2019 15:13:48.733 transmit timestamp: e0a9d31b.f298274b Tue, Jun 11 2019 15:13:31.947 filter delay: 0.02609 0.02605 0.02608 0.02608 0.00000 0.00000 0.00000 0.00000 filter offset: 16.78571 16.78577 16.78582 16.78588 0.000000 0.000000 0.000000 0.000000 delay 0.02605, dispersion 0.00003 offset 16.785772 11 Jun 15:13:31 ntpdate[9551]: step time server 80.12.64.89 offset 16.785772 sec
延迟16s
查看下free -m交换分区的使用率,考虑交换分区使用过多
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