[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [tor-bugs] #8273 [Tor]: Set flag thresholds and flags based on measured bandwidth
#8273: Set flag thresholds and flags based on measured bandwidth
----------------------+-----------------------------------------------------
Reporter: nickm | Owner:
Type: defect | Status: needs_revision
Priority: critical | Milestone: Tor: 0.2.4.x-final
Component: Tor | Version:
Keywords: tor-auth | Parent:
Points: | Actualpoints:
----------------------+-----------------------------------------------------
Changes (by nickm):
* status: needs_review => needs_revision
Comment:
Quick notes:
* The "/* Check if we cleared the whole thing and free if so */" seems
unnecessary. dirserv_clear_measured_bw_cache will free this eventually,
right?
* In case time is unsigned, the expiry check should be something like
"e->as_of < now - MX_MEASUREMENT_TIME". This might also help the compiler
raise the computation. (Not that it matters.)
* We should be calling dirserv_clear_measured_bw_cache from
dirserv_free_all.
* Would DIGESTMAP_FOREACH_MODIFY and DIGESTMAP_FOREACH_MODIFY_END make
the expiry function easier to write?
* The node_id argument for dirserv_query_measured_bw_cache should
probably be const. The documentation for that function should explain
what the return value means, and what exactly happens to the *_out
variables.
* dirserv_get_bandwidth_for_router should take a const routerinfo
* I think dirserv_cache_measured_bw should take a const parsed_line.
And an issue of medium trickiness:
* It would be cool to have some unit tests for the new machinery here.
And a trickier issue:
* When we have a sufficient number/fraction of nodes with measured
bandwidth, I think we should stop believing nodes' advertised bandwidths.
That is, if the number/fraction of measured nodes is high enough, then we
should *never* call unmeasured nodes Fast, or Guard, or HSDir, or anything
else that depends on bandwidth. (Plausible?)
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8273#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
_______________________________________________
tor-bugs mailing list
tor-bugs@xxxxxxxxxxxxxxxxxxxx
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs