Hello, Thank you for sharing interesting data. I would like to clarify how to read the data.
20190902:221500 (1567487700): [snip] m 2019090201: 30 2019090300: 02
Does it mean there are 32 vantage points in total, and at unix time 1567487700, 30 of them got SOA serial 2019090201 and the rest two of them got 2019090300, ...
20190902:222002 (1567488002): [snip] m 2019090201: 00 2019090300: 32
... then queried again at unix time 1567488002 which is 302 seconds later from the previous, all of 32 vantage points got SOA serial 2019090300? If I interpret it correctly, focusing on M-Root, it means all server instances receive updated root zone data within 5 minutes. It seems to be consistent with RSSAC 002 load-time metrics [*]. [*] https://rssac.wide.ad.jp/rssac002-metrics/2019/09/load-time/ (please keep in mind the metric is 95%-tile) Best Regards, -- Yoshitaka Aharen <aharen@jprs.co.jp> Japan Registry Services Co., Ltd. On Thu, 5 Sep 2019 02:33:17 +0000 Paul Hoffman <paul.hoffman@icann.org> wrote:
Hi there. If you read my last message, you saw some data at the bottom. It turns out the data was all wrong. Duane caught the fact that some of it was clearly wrong, and after a bunch of futzing with my report program, I saw the error (hint: time gaps are hard). The new data is below.
From the output, you can see that it is not always the same RSO that is lagging. None of the SOA transitions of the four so far took place in a single five-minute window.
Looking at the individual measurements, some collectors see different SOAs from the same RSO in the same collection period between v4 and v6; this could be routing differences, Some collectors see different SOAS from the same RSO in the same collection period between TCP and UDP; this is possibly due to load balancers and some of the systems behind them not being updated at the same time.
I hope this helps.
--Paul Hoffman
There are 213354 result records in the database Out of 4638 five-minute gaps, 12 have more than one SOA
==========
20190902:221500 (1567487700): a 2019090201: 30 2019090300: 02 b 2019090201: 32 2019090300: 00 c 2019090201: 32 2019090300: 00 d 2019090201: 32 2019090300: 00 e 2019090201: 32 2019090300: 00 f 2019090201: 32 2019090300: 00 g 2019090201: 32 2019090300: 00 h 2019090201: 28 2019090300: 04 i 2019090201: 32 2019090300: 00 j 2019090201: 28 2019090300: 04 k 2019090201: 30 2019090300: 02 l 2019090201: 32 2019090300: 00 m 2019090201: 30 2019090300: 02
20190902:222000 (1567488000): a 2019090201: 00 2019090300: 32 b 2019090201: 00 2019090300: 32 c 2019090201: 00 2019090300: 32 d 2019090201: 00 2019090300: 32 e 2019090201: 00 2019090300: 32 f 2019090201: 04 2019090300: 28 g 2019090201: 00 2019090300: 30 h 2019090201: 00 2019090300: 32 i 2019090201: 00 2019090300: 32 j 2019090201: 00 2019090300: 32 k 2019090201: 01 2019090300: 31 l 2019090201: 25 2019090300: 07 m 2019090201: 00 2019090300: 32
==========
20190903:101500 (1567530900): a 2019090300: 00 2019090301: 32 b 2019090300: 00 2019090301: 32 c 2019090300: 00 2019090301: 30 d 2019090300: 04 2019090301: 28 e 2019090300: 00 2019090301: 32 f 2019090300: 04 2019090301: 28 g 2019090300: 00 2019090301: 31 h 2019090300: 00 2019090301: 32 i 2019090300: 03 2019090301: 28 j 2019090300: 00 2019090301: 31 k 2019090300: 01 2019090301: 30 l 2019090300: 13 2019090301: 19 m 2019090300: 00 2019090301: 32
20190903:102000 (1567531200): a 2019090300: 00 2019090301: 32 b 2019090300: 00 2019090301: 32 c 2019090300: 00 2019090301: 32 d 2019090300: 00 2019090301: 32 e 2019090300: 00 2019090301: 32 f 2019090300: 04 2019090301: 28 g 2019090300: 00 2019090301: 32 h 2019090300: 00 2019090301: 32 i 2019090300: 00 2019090301: 32 j 2019090300: 00 2019090301: 32 k 2019090300: 00 2019090301: 32 l 2019090300: 00 2019090301: 32 m 2019090300: 00 2019090301: 32
==========
20190903:222000 (1567574400): a 2019090301: 00 2019090400: 32 b 2019090301: 10 2019090400: 22 c 2019090301: 25 2019090400: 06 d 2019090301: 04 2019090400: 28 e 2019090301: 01 2019090400: 31 f 2019090301: 32 2019090400: 00 g 2019090301: 01 2019090400: 29 h 2019090301: 12 2019090400: 20 i 2019090301: 28 2019090400: 02 j 2019090301: 00 2019090400: 32 k 2019090301: 30 2019090400: 02 l 2019090301: 29 2019090400: 02 m 2019090301: 00 2019090400: 32
20190903:222500 (1567574700): a 2019090301: 00 2019090400: 32 b 2019090301: 00 2019090400: 32 c 2019090301: 00 2019090400: 32 d 2019090301: 00 2019090400: 32 e 2019090301: 00 2019090400: 32 f 2019090301: 04 2019090400: 28 g 2019090301: 00 2019090400: 31 h 2019090301: 00 2019090400: 32 i 2019090301: 00 2019090400: 32 j 2019090301: 00 2019090400: 32 k 2019090301: 01 2019090400: 31 l 2019090301: 01 2019090400: 31 m 2019090301: 00 2019090400: 32
20190903:223000 (1567575000): a 2019090301: 00 2019090400: 32 b 2019090301: 00 2019090400: 32 c 2019090301: 00 2019090400: 32 d 2019090301: 00 2019090400: 32 e 2019090301: 00 2019090400: 32 f 2019090301: 04 2019090400: 28 g 2019090301: 00 2019090400: 31 h 2019090301: 00 2019090400: 32 i 2019090301: 00 2019090400: 32 j 2019090301: 00 2019090400: 32 k 2019090301: 00 2019090400: 32 l 2019090301: 00 2019090400: 32 m 2019090301: 00 2019090400: 32
20190903:223500 (1567575300): a 2019090301: 00 2019090400: 32 b 2019090301: 00 2019090400: 32 c 2019090301: 00 2019090400: 32 d 2019090301: 00 2019090400: 32 e 2019090301: 00 2019090400: 32 f 2019090301: 04 2019090400: 28 g 2019090301: 00 2019090400: 29 h 2019090301: 00 2019090400: 32 i 2019090301: 00 2019090400: 32 j 2019090301: 00 2019090400: 31 k 2019090301: 00 2019090400: 32 l 2019090301: 00 2019090400: 32 m 2019090301: 00 2019090400: 32
20190903:224000 (1567575600): a 2019090301: 00 2019090400: 32 b 2019090301: 00 2019090400: 32 c 2019090301: 00 2019090400: 32 d 2019090301: 00 2019090400: 32 e 2019090301: 00 2019090400: 32 f 2019090301: 04 2019090400: 28 g 2019090301: 00 2019090400: 30 h 2019090301: 00 2019090400: 32 i 2019090301: 00 2019090400: 31 j 2019090301: 00 2019090400: 32 k 2019090301: 00 2019090400: 32 l 2019090301: 00 2019090400: 32 m 2019090301: 00 2019090400: 32
==========
20190904:081500 (1567610100): a 2019090400: 00 2019090401: 32 b 2019090400: 00 2019090401: 32 c 2019090400: 00 2019090401: 32 d 2019090400: 00 2019090401: 32 e 2019090400: 00 2019090401: 32 f 2019090400: 04 2019090401: 28 g 2019090400: 00 2019090401: 30 h 2019090400: 00 2019090401: 32 i 2019090400: 01 2019090401: 27 j 2019090400: 00 2019090401: 32 k 2019090400: 00 2019090401: 31 l 2019090400: 18 2019090401: 14 m 2019090400: 00 2019090401: 32
20190904:082000 (1567610400): a 2019090400: 00 2019090401: 32 b 2019090400: 00 2019090401: 32 c 2019090400: 00 2019090401: 32 d 2019090400: 00 2019090401: 32 e 2019090400: 00 2019090401: 32 f 2019090400: 04 2019090401: 28 g 2019090400: 00 2019090401: 31 h 2019090400: 00 2019090401: 32 i 2019090400: 01 2019090401: 28 j 2019090400: 00 2019090401: 32 k 2019090400: 00 2019090401: 31 l 2019090400: 00 2019090401: 32 m 2019090400: 00 2019090401: 32
20190904:082500 (1567610700): a 2019090400: 00 2019090401: 32 b 2019090400: 00 2019090401: 32 c 2019090400: 00 2019090401: 32 d 2019090400: 00 2019090401: 32 e 2019090400: 00 2019090401: 32 f 2019090400: 00 2019090401: 32 g 2019090400: 00 2019090401: 29 h 2019090400: 00 2019090401: 32 i 2019090400: 02 2019090401: 27 j 2019090400: 00 2019090401: 32 k 2019090400: 00 2019090401: 32 l 2019090400: 00 2019090401: 31 m 2019090400: 00 2019090401: 32
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