...
[pid  7341] 1260280139.166408 write(1, "2.0\n", 4 <unfinished ...>
[pid  7340] 1260280139.166437 <... read resumed> "2.0\n", 4096) = 4
[pid  7340] 1260280139.166504 rt_sigaction(SIGALRM, NULL, {SIG_DFL}, 8) = 0
[pid  7340] 1260280139.166564 rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
[pid  7340] 1260280139.166614 rt_sigaction(SIGALRM, {SIG_DFL}, {SIG_DFL}, 8) = 0
[pid  7340] 1260280139.166648 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7340] 1260280139.166678 rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
[pid  7340] 1260280139.166708 rt_sigaction(SIGALRM, {0x46ed80, [], SA_RESTORER, 0x2ac53d237140}, {SIG_DFL}, 8) = 0
[pid  7340] 1260280139.166744 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7340] 1260280139.166774 alarm(1)  = 0
[pid  7340] 1260280139.166814 alarm(0)  = 1
[pid  7340] 1260280139.166844 rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
[pid  7340] 1260280139.166875 rt_sigaction(SIGALRM, {SIG_DFL}, {0x46ed80, [], SA_RESTORER, 0x2ac53d237140}, 8) = 0
[pid  7340] 1260280139.166910 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7340] 1260280139.166950 read(6,  <unfinished ...>
[pid  7341] 1260280139.166965 <... write resumed> ) = 4
[pid  7341] 1260280139.166990 select(0, NULL, NULL, NULL, {2, 0}) = 0 (Timeout)
[pid  7341] 1260280141.168299 write(1, "4.0\n", 4) = 4
[pid  7341] 1260280141.168344 select(0, NULL, NULL, NULL, {2, 0} <unfinished ...>
[pid  7340] 1260280141.168370 <... read resumed> "4.0\n", 4096) = 4
[pid  7340] 1260280141.168413 rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
[pid  7340] 1260280141.168461 rt_sigaction(SIGALRM, {SIG_DFL}, {SIG_DFL}, 8) = 0
[pid  7340] 1260280141.168501 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7340] 1260280141.168532 rt_sigprocmask(SIG_BLOCK, [ALRM], [], 8) = 0
[pid  7340] 1260280141.168566 rt_sigaction(SIGALRM, {0x46ed80, [], SA_RESTORER, 0x2ac53d237140}, {SIG_DFL}, 8) = 0
[pid  7340] 1260280141.168611 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7340] 1260280141.168640 alarm(1)  = 0
[pid  7340] 1260280141.168675 alarm(0)  = 1
...