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Re: [tor-bugs] #31971 [Circumvention/Snowflake]: Snowflake is *consistently* extremely slow when using the Windows build
#31971: Snowflake is *consistently* extremely slow when using the Windows build
-------------------------------------+---------------------------
Reporter: cypherpunks | Owner: cohosh
Type: defect | Status: assigned
Priority: Medium | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points: 3
Reviewer: | Sponsor: Sponsor28
-------------------------------------+---------------------------
Comment (by cohosh):
Alright I'm going to amend my previous statement. I just did some tests to
compare Tor Browser with Snowflake in a Windows VM vs. Tor Browser with
Snowflake on Linux. I loaded the University of Waterloo homepage 5 times
in each environment and used the [https://gitweb.torproject.org/pluggable-
transports/snowflake.git/tree/client/lib/util.go?id=b4f4b29a037fd2444423835da5999f39525f3d24#n44
snowflake log output] to determine the maximum throughput. I also used the
logs to determine how long it took the page to load and found load time to
be consistently between 2-3 minutes in each environment. The maximum
throughput results are:
{{{
Windows VM
159 kbps
209 kbps
156 kbps
182 kbps
149 kbps
Linux
161 kbps
274 kbps
154 kbps
243 kbps
125 kbps
}}}
This matches what I measured using the Task Manager in Windows as well. So
I'm getting well over the 20 kbps reported in this ticket, and the results
between Linux and Windows look comparable.
I was originally tricked into thinking I'd reproduced this after a single
load because as you can see Snowflake is still quite slow. Getting a bad
snowflake with no throughput will halt the bootstrap process all-together
and ask you to reconfigure the browser on both systems.
The corresponding log messages used to calculate the above measurements
are:
{{{
Windows VM
2019/11/04 15:46:58 Traffic Bytes (in|out): 99140 | 10715 -- (23
OnMessages, 15 Sends)
2019/11/04 15:54:31 Traffic Bytes (in|out): 130928 | 16688 -- (35
OnMessages, 25 Sends)
2019/11/04 16:01:14 Traffic Bytes (in|out): 97325 | 2715 -- (17
OnMessages, 5 Sends)
2019/11/04 16:05:53 Traffic Bytes (in|out): 113624 | 12228 -- (27
OnMessages, 14 Sends)
2019/11/04 16:24:29 Traffic Bytes (in|out): 93302 | 2715 -- (15
OnMessages, 5 Sends)
Linux
2019/11/04 16:55:05 Traffic Bytes (in|out): 100678 | 3801 -- (7
OnMessages, 7 Sends)
2019/11/04 16:59:14 Traffic Bytes (in|out): 171348 | 6487 -- (11
OnMessages, 11 Sends)
2019/11/04 17:02:26 Traffic Bytes (in|out): 96317 | 2657 -- (30
OnMessages, 3 Sends)
2019/11/04 17:06:15 Traffic Bytes (in|out): 152011 | 3801 -- (44
OnMessages, 7 Sends)
2019/11/04 17:20:05 Traffic Bytes (in|out): 78095 | 2715 -- (22
OnMessages, 5 Sends)
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31971#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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