[tor-bugs] #24554 [Core Tor/Tor]: sched: Have per-scheduler type data in a channel_t

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Dec 17 16:28:48 UTC 2019

#24554: sched: Have per-scheduler type data in a channel_t
 Reporter:  dgoulet                              |          Owner:  (none)
     Type:  enhancement                          |         Status:
                                                 |  assigned
 Priority:  Very High                            |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-sched, 034-triage-20180328,      |  Actual Points:
  034-removed-20180328, tor-chan                 |
Parent ID:  #23993                               |         Points:
 Reviewer:                                       |        Sponsor:
Changes (by dgoulet):

 * keywords:  tor-sched, 034-triage-20180328, 034-removed-20180328 => tor-
     sched, 034-triage-20180328, 034-removed-20180328, tor-chan


 Branch `ticket24554_033_02` has all the things! Wow.

 It is way too big. It should be broken down into smaller pieces (tickets)
 and then properly tested.

 This should really go in tor because it will help greatly to reduce our
 technical debt around the scheduler subsystem. But also, one particular
 thing, is that it removes the heap memory allocation done for each channel
 at each KIST mainloop. Under pressure, this leads to memory fragmentation
 quite a bit, and it has been observed.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24554#comment:16>
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