Running on embedded hardware

Jan Luehr or-list at stephan.homeunix.net
Wed Dec 26 14:24:25 UTC 2007


Hello,

I'm trying to run a tor client on my router in order anomyise my network.
- System is: Asus WL-500G (32MB Ram)
- OS is: OpenWRT whiterussian (Linux: 2.4.30)
- tor is v0.1.2.18 self-built, 'cause whiterussian tor binanries are a little 
bit out-dated ;) libraries:
	libz.so.1.2.2
	libssl.so.0.9.8
	libcrypto.so.0.9.8
	libpthread-0.9.27.so
	libdl-0.9.27.so
	libevent-1.3e.so.1.0.3
	libuClibc-0.9.27.so
	libgcc_s.so.1
	ld-uClibc-0.9.27.so

Sadly, tor is quite instable and crashes a lot. Furthermore it has come to my 
attention that tor consumes a lot of ram (and tmp - ramdisk - space), since 
the amount of available ram was down to 600KB when I was surfing by tor.
(Tor can use up to 15 MB - for ~./tor caches and runnig (ram))

I built tor with ./configure --prefix=/opt/tor -with-libevent-dir 
(...) --with-ssl-dir (...) 

Does it look like tor is runnig out-of-ram? 
Are there any special options compile/runtime to run? E.g. in order to limit 
consumed ram / cache-size, etc.?
stracing tor gave me:

brk(0x10271000)                         = 0x10271000
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 18
fcntl64(18, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
connect(18, {sa_family=AF_INET, sin_port=htons(9030), 
sin_addr=inet_addr("85.181.123.198")}, 16) = -1 EINPROGRESS (Operation now in 
progress)
getsockname(18, {sa_family=AF_INET, sin_port=htons(1176), 
sin_addr=inet_addr("84.63.7.196")}, [16]) = 0
time(NULL)                              = 1198678631
brk(0x10273000)                         = 0x10273000
brk(0x10276000)                         = 0x10276000
brk(0x10277000)                         = 0x10277000
brk(0x10278000)                         = 0x10278000
brk(0x10279000)                         = 0x10279000
brk(0x1027a000)                         = 0x1027a000
brk(0x1027b000)                         = 0x1027b000
brk(0x1027c000)                         = 0x1027c000
brk(0x10282000)                         = 0x10282000
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
brk(0x10284000)                         = 0x10284000
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
getpid()                                = 1077
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
time(NULL)                              = 1198678631
getpid()                                = 1077
getpid()                                = 1077
getpid()                                = 1077
getpid()                                = 1077
time(NULL)                              = 1198678631
getpid()                                = 1077
--- SIGILL (Illegal instruction) @ 0 (0) ---
+++ killed by SIGILL +++

Thanks in advance,
Keep smiling
yanosz



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