bwauth spends some 40 minutes "updating rank history". Every hour.
This is a newly started, well Jan 07 around 01:00, bwauth with default settings.
[bwscanner@salsa ~/torflow/NetworkScanners/BwAuthority]$ tail -100000 data/scanner.1/bw.log | egrep -A 1 'Updating rank history'
INFO[Mon Jan 12 00:03:37 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 00:42:20 2015]:Consensus history updated.
--
INFO[Mon Jan 12 00:44:36 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 01:23:38 2015]:Consensus history updated.
--
INFO[Mon Jan 12 01:54:48 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 02:34:08 2015]:Consensus history updated.
--
INFO[Mon Jan 12 02:36:32 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 03:16:12 2015]:Consensus history updated.
--
INFO[Mon Jan 12 03:38:51 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 04:18:45 2015]:Consensus history updated.
--
INFO[Mon Jan 12 04:21:06 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 05:00:14 2015]:Consensus history updated.
--
INFO[Mon Jan 12 05:03:46 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 05:43:08 2015]:Consensus history updated.
--
INFO[Mon Jan 12 05:45:15 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 06:25:19 2015]:Consensus history updated.
--
INFO[Mon Jan 12 07:09:36 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 07:48:50 2015]:Consensus history updated.
--
INFO[Mon Jan 12 08:06:39 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 08:46:14 2015]:Consensus history updated.
--
INFO[Mon Jan 12 08:59:29 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 09:39:40 2015]:Consensus history updated.
--
INFO[Mon Jan 12 09:42:26 2015]:Consensus change... Updating rank history
INFO[Mon Jan 12 10:22:41 2015]:Consensus history updated.
--
INFO[Mon Jan 12 10:54:23 2015]:Consensus change... Updating rank history
Don't know if this might be related to #4015 (moved). What does "freeze" mean there?