Re: [quicwg/base-drafts] Updated spinbit text (#2564)

MikkelFJ <notifications@github.com> Tue, 09 April 2019 14:53 UTC

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Subject: Re: [quicwg/base-drafts] Updated spinbit text (#2564)
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mikkelfj commented on this pull request.



> +is available after version negotiation and connection establishment are
+completed. On-path measurement and use of the latency spin bit is further
+discussed in {{QUIC-MANAGEABILITY}}.
+
+The spin bit is an OPTIONAL feature of QUIC. A QUIC stack that chooses to
+support the spin bit MUST implement it as specified in this document.
+
+Each endpoint unilaterally decides if the spin bit is enabled or disabled for a
+connection. Implementations MUST allow administrators of clients and servers
+to disable the spin bit either globally or on a per-connection basis. Even when
+the spin bit is not disabled by the administrator implementations MUST disable
+the spin bit on a randomly chosen fraction of connections. The random selection
+process SHOULD be designed such that on average the spin bit is disabled for at
+least one eighth of network paths. The selection process should be externally
+unpredictable but consistent for any given combination of source and destination
+address and port. The selection process performed at the beginning of the

> I'm fine with simply stating that spinning is disabled for 1/8th of connections.

I know why it is there, but does the text have any motivation for having this 1/8 rule?

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