[tor-bugs] #16992 [Tor]: "[warn] Failure from drain_fd" in Tor v0.2.7.2-alpha (git-36c0ae6f7834af16) running on Windows XP
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Mon Sep 7 09:51:56 UTC 2015
#16992: "[warn] Failure from drain_fd" in Tor v0.2.7.2-alpha (git-36c0ae6f7834af16)
running on Windows XP
-------------------------+--------------------------------
Reporter: TORques | Owner:
Type: defect | Status: new
Priority: normal | Milestone: Tor: 0.2.7.x-final
Component: Tor | Version: Tor: 0.2.7.2-alpha
Resolution: | Keywords:
Actual Points: | Parent ID:
Points: |
-------------------------+--------------------------------
Comment (by TORques):
Replying to [comment:7 yawning]:
> Replying to [comment:6 TORques]:
>
>
>
> > However, this non-exit relay can easily reach **5 MB/sec or more** on
my tweaked Windows XP platform. Not bad for the TOR network, isn't it? My
Ookla test says 24 MB/s download and 10 MB/s upload and my CPU can process
easily a TOR stream of 5 MB/s.
> >
> >
> >
>
> Bulk single connection throughput is not why I brought that up. See #98
among other issues. If your router/relay can't handle a large number of
simultaneous connections, it'll end up underutilized and be bad for the
network. Past that if it works, great. If it breaks, patches accepted.>
Thanks for your replay. My router/relay can handle a large number of
simultaneous connections (tcpsys changed to 256 connections). I just built
the latest tor from your github and I see the modified message related to
"Failure from drain_fd"
{{{
Sep 07 12:34:25.000 [notice] Tor 0.2.7.2-alpha-dev opening new log file.
Sep 07 12:34:25.781 [notice] Tor v0.2.7.2-alpha-dev running on Windows XP
with Libevent 2.0.22-stable, OpenSSL 1.0.2d and Zlib 1.2.8.
Sep 07 12:34:27.000 [notice] This version of Tor (0.2.7.2-alpha-dev) is
newer than any recommended version, according to the directory
authorities. Recommended versions are:
0.2.4.23,0.2.4.24,0.2.4.25,0.2.4.26,0.2.4.27,0.2.5.8-rc,0.2.5.9-rc,0.2.5.10,0.2.5.11,0.2.5.12,0.2.6.5-rc,0.2.6.6,0.2.6.7,0.2.6.8,0.2.6.9,0.2.6.10,0.2.7.1-alpha,0.2.7.2-alpha
Sep 07 12:34:42.000 [notice] Now checking whether ORPort
109.103.57.102:9001 and DirPort 109.103.57.102:9030 are reachable... (this
may take up to 20 minutes -- look for log messages indicating success)
Sep 07 12:34:43.000 [notice] Self-testing indicates your DirPort is
reachable from the outside. Excellent.
Sep 07 12:34:43.000 [warn] Failure from drain_fd: No error
Sep 07 12:34:43.000 [notice] Self-testing indicates your ORPort is
reachable from the outside. Excellent. Publishing server descriptor.
Sep 07 12:34:47.000 [notice] Performing bandwidth self-test...done.
}}}
Also, I used bench.exe to see the tor performances on my PC but I have no
idea if those values are good or bad for a relay. Can you look into and
write your opinion about?
{{{
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\tor-0.2.7.2-alpha\src\test>bench.exe
===== dmap =====
nbits=65536
digestmap_set: 500.68 ns per element
digestmap_get: 488.52 ns per element
digestset_add: 422.00 ns per element
digestset_contains: 416.99 ns per element.
Hits == 32825344
False positive rate on digestset: 0.22%
===== siphash =====
siphash24g(7): 260.42 ns per call
siphash24g(8): 312.50 ns per call
siphash24g(15): 312.50 ns per call
siphash24g(16): 416.67 ns per call
siphash24g(20): 364.58 ns per call
siphash24g(32): 520.83 ns per call
siphash24g(111): 989.58 ns per call
siphash24g(128): 1197.92 ns per call
===== aes =====
1 bytes: 70.78 nsec per byte
2 bytes: 47.50 nsec per byte
4 bytes: 36.32 nsec per byte
8 bytes: 29.80 nsec per byte
16 bytes: 23.28 nsec per byte
32 bytes: 21.42 nsec per byte
64 bytes: 21.42 nsec per byte
128 bytes: 21.42 nsec per byte
256 bytes: 23.28 nsec per byte
512 bytes: 21.42 nsec per byte
1024 bytes: 19.56 nsec per byte
2048 bytes: 20.49 nsec per byte
4096 bytes: 20.49 nsec per byte
8192 bytes: 20.49 nsec per byte
===== onion_TAP =====
Client-side, part 1: 2349.853516 usec.
Server-side, key guessed right: 6164.550781 usec
Server-side, key guessed wrong: 7995.605469 usec.
Client-side, part 2: 1953.125000 usec.
===== onion_ntor =====
Ed25519-based basepoint multiply = disabled.
Client-side, part 1: 1495.361328 usec.
Server-side: 4531.860352 usec
Client-side, part 2: 3021.240234 usec.
Ed25519-based basepoint multiply = enabled.
Client-side, part 1: 442.504883 usec.
Server-side: 3494.262695 usec
Client-side, part 2: 3005.981445 usec.
===== ed25519 =====
Ed25519-donna = disabled.
Generate public key: 476.84 usec
Sign a short message: 484.47 usec
Verify signature: 1602.17 usec
Convert public point from curve25519: 95.37 usec
Blind a public key: 1399.99 usec
Ed25519-donna = enabled.
Generate public key: 442.50 usec
Sign a short message: 457.76 usec
Verify signature: 1514.43 usec
Convert public point from curve25519: 91.55 usec
Blind a public key: 1373.29 usec
===== cell_aes =====
509 bytes, misaligned by 0: 20.61 nsec per byte
509 bytes, misaligned by 1: 20.14 nsec per byte
509 bytes, misaligned by 2: 20.61 nsec per byte
509 bytes, misaligned by 3: 20.14 nsec per byte
509 bytes, misaligned by 4: 20.61 nsec per byte
509 bytes, misaligned by 5: 20.14 nsec per byte
509 bytes, misaligned by 6: 20.14 nsec per byte
509 bytes, misaligned by 7: 20.61 nsec per byte
509 bytes, misaligned by 8: 20.14 nsec per byte
509 bytes, misaligned by 9: 20.61 nsec per byte
509 bytes, misaligned by 10: 20.14 nsec per byte
509 bytes, misaligned by 11: 20.14 nsec per byte
509 bytes, misaligned by 12: 20.61 nsec per byte
509 bytes, misaligned by 13: 20.14 nsec per byte
509 bytes, misaligned by 14: 20.61 nsec per byte
509 bytes, misaligned by 15: 20.14 nsec per byte
===== cell_ops =====
Inbound cells: 10490.42 ns per cell. (20.61 ns per byte of payload)
Outbound cells: 10490.42 ns per cell. (20.61 ns per byte of payload)
===== dh =====
Complete DH handshakes (1024 bit, public and private ops):
7.980347 millisec each.
===== ecdh_p256 =====
Complete ECDH P-256 handshakes (2 public and 2 private ops):
9.048462 millisec each.
===== ecdh_p224 =====
Complete ECDH P-224 handshakes (2 public and 2 private ops):
6.301880 millisec each.
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16992#comment:8>
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