[tor-bugs] #4626 [Tor Directory Authority]: Very high cpu usage for gabelmoo running master

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Tue Dec 6 07:33:03 UTC 2011

#4626: Very high cpu usage for gabelmoo running master
 Reporter:  Sebastian                |          Owner:                    
     Type:  defect                   |         Status:  needs_review      
 Priority:  major                    |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Directory Authority  |        Version:                    
 Keywords:                           |         Parent:                    
   Points:                           |   Actualpoints:                    

Comment(by Sebastian):

 more updates

 < wanoskarnet> the logic of 4fd79f9def289965 is broken. you can't to call
 connection_or_check_valid_tls_handshake() just after wantread from
 ssl_read(), that doesn't means that certs recved yet.
 < asn> got_renegotiate && WANTREAD, does it for most cases
 < asn> but in certain high-traffic scenarios, indeed, the certs might not
 be there.
 < wanoskarnet> no for most cases there are no certs at all. server just
 send hello and keys and returns -1 as non blockin io (no yet answer with
 cert and finish by client).
 < wanoskarnet> callback that sets got_renegotiate happens during first
 ssl_read just after client hello.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4626#comment:17>
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