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Re: Why some Tor servers are slow

To: or-talk@xxxxxxxxxxxxx
Subject: Re: Why some Tor servers are slow
From: Giorgos Pallas <gpall@xxxxxxxxxxx>
Date: Mon, 10 Oct 2005 21:38:11 +0300
Delivered-to: archiver@seul.org
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Delivered-to: or-talk@seul.org
Delivery-date: Mon, 10 Oct 2005 14:37:58 -0400
In-reply-to: <20051003174907.GB1420@eff.org>
References: <092820051623.12011.433AC392000EA2BB00002EEB22058844849D0A900A9CD20A050703@comcast.net> <20050929194109.GR4630@localhost.localdomain> <433C4A70.6010803@addicts.nl> <433D1BCE.2010502@ccf.auth.gr> <20050930224601.GS4630@localhost.localdomain> <4340EAE1.6020001@ccf.auth.gr> <20051003174907.GB1420@eff.org>
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Chris Palmer wrote:

Giorgos Pallas writes:
So, something is going wrong specificaly with ssl because if you try to make other connections to the server (eg web browse: http://postmortem.csd.auth.gr), it works very fast.So, how could I further troubleshoot ssl? Using some openssl parameters maybe? Any ideas?
Try using strace(1) to see where all that time is being spent. The
output is likely to be copious, but see the -c option in the man page.

Well, I used strace which was very informative, as long as someone can understand this information! So I would kindly ask if any unix guru is out there listening, plz have a look and help! I send the output with strace -c, and without -c which is rather extensive.

So, when I run strace without -c, it was all always running very fast, until these lines :

write(3, "\200\214\1\3\1\0c\0\0\0 \0\0009\0\0008\0\0005\0\0\26\0"..., 142) = 142 read(3, "\26\3\1\0*\2\0", 7) = 7

I mean, I got all the output of strace at once until I saw: "read(3, " , it then stuck there for some seconds, and then I always got the rest of the response at once.

Anyone any ideas what is happening there?

And also all these files that are said to be missing, do you think they are causing some problems?

gpall@postmortem:~$strace -c openssl s_client -connect 155.207.113.227:9001 CONNECTED(00000003) depth=1 /O=TOR/CN=masquerade <identity> verify error:num=19:self signed certificate in certificate chain verify return:0 --- Certificate chain 0 s:/O=TOR/CN=masquerade i:/O=TOR/CN=masquerade <identity> 1 s:/O=TOR/CN=masquerade <identity> i:/O=TOR/CN=masquerade <identity> --- Server certificate -----BEGIN CERTIFICATE----- MIIByDCCATGgAwIBAgIEQ0qX2zANBgkqhkiG9w0BAQUFADAuMQwwCgYDVQQKEwNU T1IxHjAcBgNVBAMUFW1hc3F1ZXJhZGUgPGlkZW50aXR5PjAeFw0wNTEwMTAxNjMz MzFaFw0wNTEwMTAxODMzMzFaMCMxDDAKBgNVBAoTA1RPUjETMBEGA1UEAxMKbWFz cXVlcmFkZTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAsSQcnvKs2bUsCZNG hm7LabcIWi5VQ9hRtrgt1i7YZzeCR2RxYm0CRhysZC3/ZFHIQWi4OQKV7zvziPka SNjQbXMCI6J9X3eheZKK5ztRvGP+iO6xuh6B23I84aXWgWs2pmknfHJQzLJt7dYs teXADtt8N1gFK6YzjcshfI8YCrECAwEAATANBgkqhkiG9w0BAQUFAAOBgQCtUSz8 dkLjGOWssFvuzzrLZxd5UBuBkhNTtvtbUTE+fiiWPMInYDdQ+zOWsiBK7QZylNL9 VJnu5iQVLh9VqI4w/X4M4IRyoUcRbXQ8f13FTM7V7C7H9D63tS1qCLLj2VcbRo70 ETnYHCVgFeA62s1p/xCiZ3j1+C3wsUrKdPBKRw== -----END CERTIFICATE----- subject=/O=TOR/CN=masquerade issuer=/O=TOR/CN=masquerade <identity> --- No client certificate CA names sent --- SSL handshake has read 1469 bytes and written 344 bytes --- New, TLSv1/SSLv3, Cipher is EDH-RSA-DES-CBC3-SHA Server public key is 1024 bit SSL-Session: Protocol : TLSv1 Cipher : EDH-RSA-DES-CBC3-SHA Session-ID: Session-ID-ctx: Master-Key: 904F465ED9846114BC635ADEEA677914E1239BD028954ED629BFC29A93F29960F061A9C5DA0A2EEDFC1FF63FAD77969D Key-Arg : None Start Time: 1128968737 Timeout : 300 (sec) Verify return code: 19 (self signed certificate in certificate chain) --- read:errno=0 % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 57.18 0.005641 152 37 write 20.18 0.001991 5 386 getpid 6.08 0.000600 26 23 read 3.44 0.000339 38 9 1 open 3.06 0.000302 302 1 connect 2.60 0.000257 18 14 old_mmap 1.25 0.000123 14 9 close 1.09 0.000108 27 4 munmap 0.80 0.000079 16 5 5 access 0.69 0.000068 9 8 fstat64 0.51 0.000050 10 5 time 0.50 0.000049 8 6 brk 0.47 0.000046 46 1 socket 0.45 0.000044 15 3 mmap2 0.32 0.000032 11 3 select 0.28 0.000028 28 1 stat64 0.19 0.000019 6 3 getuid32 0.18 0.000018 9 2 rt_sigaction 0.14 0.000014 14 1 shutdown 0.13 0.000013 13 1 setsockopt 0.10 0.000010 10 1 uname 0.10 0.000010 10 1 set_thread_area 0.09 0.000009 5 2 geteuid32 0.08 0.000008 4 2 getgid32 0.08 0.000008 4 2 getegid32 ------ ----------- ----------- --------- --------- ---------------- 100.00 0.009866 530 6 total


And now strace without -c:

execve("/usr/bin/openssl", ["openssl", "s_client", "-connect", "155.207.113.227:9001"], [/* 17 vars */]) = 0 uname({sys="Linux", node="postmortem", ...}) = 0 brk(0) = 0x809d000 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f90000 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=18429, ...}) = 0 old_mmap(NULL, 18429, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f8b000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/usr/lib/i686/cmov/libssl.so.0.9.7", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0\205\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0644, st_size=198576, ...}) = 0 old_mmap(NULL, 199344, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xb7f5a000 old_mmap(0xb7f88000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x2e000) = 0xb7f88000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/usr/lib/i686/cmov/libcrypto.so.0.9.7", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\300\2"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0644, st_size=1029672, ...}) = 0 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f59000 old_mmap(NULL, 1043608, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xb7e5a000 old_mmap(0xb7f44000, 73728, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xea000) = 0xb7f44000 old_mmap(0xb7f56000, 11416, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f56000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/lib/tls/libdl.so.2", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\32"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0644, st_size=9872, ...}) = 0 old_mmap(NULL, 8632, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xb7e57000 old_mmap(0xb7e59000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x2000) = 0xb7e59000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/lib/tls/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0 old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xb7d22000 old_mmap(0xb7e4c000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x129000) = 0xb7e4c000 old_mmap(0xb7e55000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7e55000 close(3) = 0 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7d21000 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7d21080, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 munmap(0xb7f8b000, 18429) = 0 brk(0) = 0x809d000 brk(0x80be000) = 0x80be000 brk(0) = 0x80be000 rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 open("/usr/lib/ssl/openssl.cnf", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=7782, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f8f000 read(3, "#\n# OpenSSL example configuratio"..., 4096) = 4096 read(3, "_name ]\ncountryName\t\t\t= Country "..., 4096) = 3686 read(3, "", 4096) = 0 close(3) = 0 munmap(0xb7f8f000, 4096) = 0 rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_IGN}, 8) = 0 getpid() = 11689 getpid() = 11689 getpid() = 11689 getuid32() = 1000 geteuid32() = 1000 getgid32() = 1000 getegid32() = 1000 getuid32() = 1000 geteuid32() = 1000 getgid32() = 1000 getegid32() = 1000 stat64("/home/gpall/.rnd", {st_mode=S_IFREG|0600, st_size=1024, ...}) = 0 open("/home/gpall/.rnd", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0600, st_size=1024, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f8f000 read(3, "\232)\324\274\361\310\36\221HAh\326\202\377\351\224\242"..., 4096) = 1024 read(3, "", 4096) = 0 close(3) = 0 munmap(0xb7f8f000, 4096) = 0 getpid() = 11689 getpid() = 11689 socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3 setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, [0], 4) = 0 connect(3, {sa_family=AF_INET, sin_port=htons(9001), sin_addr=inet_addr("155.207.113.227")}, 16) = 0 getpid() = 11689 getpid() = 11689 fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f8f000 write(1, "CONNECTED(00000003)\n", 20) = 20 getpid() = 11689 getpid() = 11689 getpid() = 11689 select(4, [3], [3], NULL, NULL) = 1 (out [3]) time(NULL) = 1128968622 getpid() = 11689 brk(0) = 0x80be000 brk(0x80df000) = 0x80df000 getpid() = 11689 getpid() = 11689 getpid() = 11689 open("/dev/urandom", O_RDONLY|O_NONBLOCK|O_NOCTTY) = 4 select(5, [4], NULL, NULL, {0, 10000}) = 1 (in [4], left {0, 10000}) read(4, "\263\306s~3#\301}i\36\305\352\324\n\35\347\276\37C\240"..., 32) = 32 close(4) = 0 getpid() = 11689 getpid() = 11689 getuid32() = 1000 getpid() = 11689 time(NULL) = 1128968622 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(3, "\200\214\1\3\1\0c\0\0\0 \0\0009\0\0008\0\0005\0\0\26\0"..., 142) = 142 read(3, "\26\3\1\0*\2\0", 7) = 7

# comment by gpall -> Here, it was always spending some seconds at: read(3,

time(NULL) = 1128968635 time(NULL) = 1128968635 getpid() = 11689 read(3, "\0&\3\1CJ\261\273\347\31\244\276\6\31\264\336\337\255\30"..., 40) = 40 read(3, "\26\3\1\3\260", 5) = 5 read(3, "\v\0\3\254\0\3\251\0\1\3140\202\1\3100\202\0011\240\3\2"..., 944) = 944 getpid() = 11689 getpid() = 11689 write(2, "depth=1 /O=TOR/CN=masquerade <id"..., 40depth=1 /O=TOR/CN=masquerade <identity> ) = 40 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(2, "verify error:num=19:self signed "..., 65verify error:num=19:self signed certificate in certificate chain ) = 65 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(2, "verify return:0\n", 16verify return:0 ) = 16 getpid() = 11689 getpid() = 11689 getpid() = 11689 read(3, "\26\3\1\1\215", 5) = 5 read(3, "\f\0\1\211\0\200\377\377\377\377\377\377\377\377\311\17"..., 397) = 397 read(3, "\26\3\1\0\17", 5) = 5 read(3, "\r\0\0\7\4\3\4\1\2\0\0\16\0\0\0", 15) = 15 time([1128968635]) = 1128968635 getpid() = 11689 getpid() = 11689 write(3, "\26\3\1\0\7\v\0\0\3\0\0\0\26\3\1\0\206\20\0\0\202\0\200"..., 202) = 202 read(3, "\24\3\1\0\1", 5) = 5 read(3, "\1", 1) = 1 read(3, "\26\3\1\0(", 5) = 5 read(3, "4\303\364r3j:\250\26\242pJNeFu[\351c\257\6E\205\270B8\213"..., 40) = 40 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\nCertificate chain\n", 22) = 22 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " 0 s:/O=TOR/CN=masquerade\n", 26) = 26 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " i:/O=TOR/CN=masquerade <ident"..., 37) = 37 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " 1 s:/O=TOR/CN=masquerade <ident"..., 37) = 37 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " i:/O=TOR/CN=masquerade <ident"..., 37) = 37 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\n", 4) = 4 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "Server certificate\n", 19) = 19 getpid() = 11689 getpid() = 11689 write(1, "-----BEGIN CERTIFICATE-----\n", 28) = 28 write(1, "MIIByDCCATGgAwIBAgIEQ0qX2zANBgkq"..., 585) = 585 write(1, "ETnYHCVgFeA62s1p/xCiZ3j1+C3wsUrK"..., 41) = 41 write(1, "-----END CERTIFICATE-----\n", 26) = 26 getpid() = 11689 getpid() = 11689 write(1, "subject=/O=TOR/CN=masquerade\n", 29) = 29 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "issuer=/O=TOR/CN=masquerade <ide"..., 39) = 39 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\nNo client certificate CA nam"..., 40) = 40 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\nSSL handshake has read 1469 "..., 60) = 60 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\n", 4) = 4 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "New, TLSv1/SSLv3, Cipher is EDH-"..., 49) = 49 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "Server public key is 1024 bit\n", 30) = 30 getpid() = 11689 getpid() = 11689 write(1, "SSL-Session:\n", 13) = 13 getpid() = 11689 getpid() = 11689 write(1, " Protocol : TLSv1\n", 22) = 22 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " Cipher : EDH-RSA-DES-CBC3"..., 37) = 37 getpid() = 11689 getpid() = 11689 write(1, " Session-ID: \n", 17) = 17 write(1, " Session-ID-ctx: \n", 21) = 21 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " Master-Key: D5CCADC8B6686748"..., 113) = 113 getpid() = 11689 getpid() = 11689 write(1, " Key-Arg : None\n", 21) = 21 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, " Start Time: 1128968635\n", 27) = 27 getpid() = 11689 getpid() = 11689 write(1, " Timeout : 300 (sec)\n", 26) = 26 getpid() = 11689 getpid() = 11689 write(1, " Verify return code: 19 (self"..., 74) = 74 getpid() = 11689 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(1, "---\n", 4) = 4 getpid() = 11689 getpid() = 11689 select(4, [0 3], [], NULL, NULL) = 1 (in [3]) read(3, "", 5) = 0 getpid() = 11689 getpid() = 11689 getpid() = 11689 write(2, "read:errno=0\n", 13read:errno=0 ) = 13 getpid() = 11689 getpid() = 11689 write(3, "\25\3\1\0\30\240\233\237v\330(\251-\22\256\26I\212~\266"..., 29) = 29 shutdown(3, 0 /* receive */) = 0 close(3) = 0 getpid() = 11689 getpid() = 11689 munmap(0xb7f8f000, 4096) = 0 exit_group(0) = ?

References:
- Re: Why some Tor servers are slow (was Re: TOR Park Exit Node Question)
  - From: Giorgos Pallas
- Re: Why some Tor servers are slow (was Re: TOR Park Exit Node Question)
  - From: Chris Palmer

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