[tor-bugs] #7134 [Core Tor/Tor]: Add statistics on time spent on crypto operations

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#7134: Add statistics on time spent on crypto operations
--------------------------+-----------------------------------
 Reporter:  karsten       |          Owner:
     Type:  project       |         Status:  needs_information
 Priority:  Medium        |      Milestone:  Tor: 0.2.???
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  tor-relay     |  Actual Points:
Parent ID:  #7357         |         Points:
 Reviewer:                |        Sponsor:  SponsorZ
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Changes (by dgoulet):

 * cc: dgoulet (removed)
 * status:  new => needs_information
 * sponsor:   => SponsorZ
 * keywords:  SponsorZ tor-relay => tor-relay
 * milestone:  Tor: unspecified => Tor: 0.2.???


Comment:

 The tracing stuff is in #13802 and in needs_review which has been used by
 Rob and pastly for KIST measurements.

 We could easily add tracepoints to the crypto subsystem, have some sorts
 of counters and report that data in the extra-info. Most important thing
 here is really to not slow down Tor has that crypto will be on the fast
 path.

 Is this something we need soon-ish/now? And if so, I can take few cycles
 to do this?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7134#comment:6>
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