[tor-bugs] #24826 [Core Tor/Tor]: LZMA-compressed consensus diffs stall Tor Browser launch for at least 20s or break it entirely

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jan 9 07:33:38 UTC 2018


#24826: LZMA-compressed consensus diffs stall Tor Browser launch for at least 20s
or break it entirely
--------------------------+------------------------------------
 Reporter:  gk            |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by cypherpunks):

 Replying to [comment:3 gk]:
 > Replying to [comment:2 cypherpunks]:
 > > 7.0.11 sometimes gives
 > > {{{
 > > [01-09 05:25:15] Torbutton NOTE: Exception on control port
 [Exception... "Component returned failure code: 0x804b000e
 (NS_ERROR_NET_TIMEOUT) [nsIBinaryInputStream.readBytes]"  nsresult:
 "0x804b000e (NS_ERROR_NET_TIMEOUT)"  location: "JS frame ::
 chrome://torbutton/content/torbutton.js :: torbutton_socket_readline ::
 line 824"  data: no]
 > > }}}
 > > on a slow Windows machine (didn't you forget to set the compression
 thread's priority below normal?).
 >
 > That's a different issue. There is no released Tor Browser that supports
 LZMA compression at the moment.
 Not so different as you think. Without LZMA it stalls for ~15 sec there
 and breaks Torbutton when more. And it's not funny that Tor periodically
 causes glitches in all other programs (check with 1 CPU VM). BTW,
 shouldn't Tor respond to Tor Launcher even when it's parsing diffs in the
 background? (Is timeout set to 15 sec as your logs show?)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24826#comment:4>
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