#30218: Add bandwidth files archiving to CollecTor -------------------------------------------------+------------------------- Reporter: irl | Owner: | metrics-team Type: enhancement | Status: new Priority: Medium | Milestone: Component: Metrics/CollecTor | Version: Severity: Normal | Resolution: Keywords: tor-bwauth,tor-dirauth,metrics- | Actual Points: roadmap-2019-q2 | Parent ID: #21378 | Points: Reviewer: | Sponsor: -------------------------------------------------+-------------------------
Comment (by karsten): Yesterday, I wrote a little script that ran roughly once per minute for over an hour and fetched moria1's and longclaw's "next" bandwidth files. I received a bandwidth file every time, not just between, say, HH:49 and HH:00. More specifically, here's what I got: || '''Authority''' || '''Timestamp''' ||'''Digest''' || '''First received''' || '''Last received''' || '''Referenced from vote''' || || longclaw || 1555868103 (17:35) ||`lKTscsfb..` || .. || 18:40 || 18:00 || || longclaw || 1555871704 (18:35) ||`8KuO5fcL..` || 18:43 || 19:40 || 19:00 || || longclaw || 1555875303 (19:35) ||`laoWH3KH..` || 19:41 || .. || 20:00 || || moria1 || 1555867341 (17:22) ||`EAiqle6R..` || .. || 18:45 || 18:00 || || moria1 || 1555871524 (18:32) ||`5aZPyxPy..` || 18:46 || 19:45 || 19:00 || || moria1 || 1555875627 (19:40) ||`ZTrHiTtI..` || 19:46 || .. || 20:00 || Looking at the 19:00 votes, we could fetch referenced bandwidth files from around 18:45 to around 19:45. For reference, we're currently fetching votes (and all other relay descriptors) starting at HH:05 and once more at HH:35 in case there was no consensus at HH:00. How about we simply download "next" bandwidth files at around HH:05 and at around HH:35, knowing that we're really going to receive "previous" bandwidth files? This would be easiest with regard to extending CollecTor's relaydescs module. -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30218#comment:5> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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