[tor-bugs] #22798 [Core Tor/Tor]: Windows relay is several times slower than Linux relay
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Mon Jul 10 10:10:04 UTC 2017
#22798: Windows relay is several times slower than Linux relay
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Reporter: Vort | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor:
| unspecified
Component: Core Tor/Tor | Version: Tor: 0.2.9.11
Severity: Normal | Resolution:
Keywords: tor-relay performance windows | Actual Points:
Parent ID: | Points: 5
Reviewer: | Sponsor:
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Comment (by cypherpunks):
Tested NAT-ed guest Win7 with "BwTest.3.exe -c ip_of_local_host -u" (yet
moded to report SNDBUF on start and later). When NAT-ed it connects to
host's "bwtest -s -d" over "lo" interface, so added delay to "lo" and got
ping 500ms. It uploads faster than usual 53KiB/s but reported SNDBUF ==
8KB anyway. In guest's wireshark ACKs have no delays. WAN latency doesn't
affect tcp data in NAT mode, guest communicates internally with VM process
on host without host's tcp stack: all acks appears immediately, peer's
tcp_window differs, etc. VM process behaves like proxy for guest in NAT
mode.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22798#comment:98>
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