Re: SIGPIPE in t9300-fast-import

On Dec 12, 2010, at 4:49 PM, Jonathan Nieder wrote:

No idea.

Yes.

Yes.

The moral equivalent seems to be "dtruss" (which I think is a front end to DTrace) in modern OS X.

0+1 records in 0+1 records out 8139 bytes transferred in 0.000205 secs (39694698 bytes/sec) SYSCALL(args) = return ioctl(0x6, 0x80086804, 0x7FFF5FBFD0A0) = 0 0 close(0x6) = 0 0 __sysctl(0x7FFF5FBFCF90, 0x2, 0x7FFF5FBFCF80) = 0 0 bsdthread_register(0x7FFF852F43DC, 0x7FFF852D4FF8, 0x2000) = 0 0 thread_selfid(0x7FFF852F43DC, 0x7FFF852D4FF8, 0x0) = 1850088 0 open_nocancel("/dev/urandom\0", 0x0, 0x7FFF70ABABE0) = 6 0 read_nocancel(0x6, "\350>6\026\310R\251_\227\213h\237\304\330&Q-\247\0313\020BnH\277\337z\276c\247\206\017\340/\302} \2644\273\003\252`\363d8\252\247)V2\323\021\320\\\214\001\331\226\020RY\024I\0", 0x40) = 64 0 close_nocancel(0x6) = 0 0 mmap(0x0, 0x3000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0xD000 0 __sysctl(0x7FFF5FBFCE10, 0x2, 0x7FFF5FBFCDD0) = 0 0 __sysctl(0x7FFF5FBFCDD0, 0x2, 0x7FFF5FBFCE68) = 0 0 getpid(0x7FFF5FBFCD60, 0x7FFFFFE00050, 0x0) = 94596 0 open_nocancel("/dev/urandom\0", 0x0, 0x0) = 6 0 read_nocancel(0x6, "\253\331\354\357A)G\3256\222\024=\242E\261\301\314\351\017K\301;O\256I\270\301\312\263M\307\340+U\217\242\230\335\020\275\356T\323\334\312\313\331*\037\273K\332\a\247\323\324\377m\360\204\375c\026i\345\017x\2070n\026\266\027\021k\340( \245\337\3277H\214\0", 0x6C) = 108 0 close_nocancel(0x6) = 0 0 __sysctl(0x7FFF5FBFCE10, 0x2, 0x7FFF5FBFCE3C) = 0 0 mmap(0x0, 0x17000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x10000 0 mmap(0x0, 0x17000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x27000 0 mmap(0x0, 0x1000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x3E000 0 mmap(0x0, 0x200000, 0x3, 0x1002, 0x7000000, 0x7FFF00000001) = 0x3F000 0 munmap(0x10003F000, 0xC1000) = 0 0 munmap(0x100200000, 0x3F000) = 0 0 __sysctl(0x7FFF5FBFCF70, 0x2, 0x7FFF5FBFCF30) = 0 0 __sysctl(0x7FFF5FBFCF30, 0x2, 0x7FFF70AC7760) = 0 0 __sysctl(0x7FFF5FBFCF70, 0x2, 0x7FFF5FBFCF30) = 0 0 __sysctl(0x7FFF5FBFCF30, 0x2, 0x7FFF70AC7764) = 0 0 __sysctl(0x7FFF5FBFCF70, 0x2, 0x7FFF5FBFCF30) = 0 0 __sysctl(0x7FFF5FBFCF30, 0x2, 0x7FFF70AC7768) = 0 0 mmap(0x0, 0x3000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x3F000 0 __sysctl(0x7FFF5FBFCF40, 0x2, 0x7FFF5FBFCF00) = 0 0 __sysctl(0x7FFF5FBFCF00, 0x2, 0x7FFF5FBFCF98) = 0 0 __sysctl(0x7FFF5FBFCF40, 0x2, 0x7FFF5FBFCF6C) = 0 0 mmap(0x0, 0x17000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x42000 0 mmap(0x0, 0x17000, 0x3, 0x1002, 0x1000000, 0x7FFF00000001) = 0x59000 0 mmap(0x0, 0x200000, 0x3, 0x1002, 0x7000000, 0x7FFF00000001) = 0x200000 0 munmap(0x100300000, 0x100000) = 0 0 fstat64(0x0, 0x7FFF5FBFF320, 0x17FFF) = 0 0 lseek(0x0, 0x0, 0x1) = -1 Err#29 open("blob\0", 0x602, 0x1B6) = 6 0 fstat64(0x6, 0x7FFF5FBFF320, 0x0) = 0 0 lseek(0x6, 0x0, 0x1) = 0 0 mmap(0x0, 0x58000, 0x3, 0x1002, 0x3000000, 0x7FFF00000000) = 0x70000 0 mmap(0x0, 0x1000, 0x3, 0x1002, 0x3000000, 0x7FFF00000000) = 0xC8000 0 sigaction(0x1D, 0x7FFF5FBFF380, 0x7FFF5FBFF3B0) = 0 0 sigaction(0x2, 0x7FFF5FBFF380, 0x7FFF5FBFF3B0) = 0 0 read(0x0, "the quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the l", 0x2C000) = 8139 0 write(0x6, "the quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the l", 0x1FCB) = 8139 0 write(0x2, "0+1 records in\n0+1 records out\n quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quic", 0x1F) = 31 0 write(0x2, "8139 bytes transferred in 0.000205 secs (39694698 bytes/sec)\nuick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jump", 0x3D) = 61 0 getpid(0x7FFF5FBFF250, 0x7FFFFFE00050, 0x0) = 94596 0 open_nocancel("/dev/urandom\0", 0x0, 0x0) = 6 0 read_nocancel(0x6, "\232/\226\373ld\353\r+l\236qV\317\370\271.0\353=\316\3464\t\263\262r\022\362w\360H\245LdE\3769\254\3309m\246I\361\374\307\342]6\n\337\303\310\333\332\036\327\313\224(\3443C\327\224\225\376\221\311-\323\272\344\275l\034\353LR<\236\t\202\250\353\202\276AS\363\023@\353\331[\037\bC\036)\336\363WZ\003\0", 0x6C) = 108 0 close_nocancel(0x6) = 0 0 issetugid(0x100000000, 0x7FFF5FBFF5B0, 0x7FFF5FC40530) = 0 0 geteuid(0x100000000, 0x7FFF5FBFF5B0, 0x0) = 0 0 __sysctl(0x7FFF5FBFD140, 0x2, 0x7FFF5FBFD100) = 0 0 __sysctl(0x7FFF5FBFD100, 0x2, 0x7FFF5FBFD19C) = 0 0 shared_region_check_np(0x7FFF5FBFD308, 0x0, 0x7FFF5FC1DC86) = 0 0 stat64("/usr/lib/dtrace/libdtrace_dyld.dylib\0", 0x7FFF5FBFC710, 0x7FFF5FBFCD50 = 0 0 open("/usr/lib/dtrace/libdtrace_dyld.dylib\0", 0x0, 0x0) = 6 0 pread(0x6, "\312\376\272\276\0", 0x1000, 0x0) = 4096 0 pread(0x6, "\317\372\355\376\a\0", 0x1000, 0x1000) = 4096 0 mmap(0x100008000, 0x2000, 0x5, 0x12, 0x6, 0x1FFFFFFFF) = 0x8000 0 mmap(0x10000A000, 0x1000, 0x3, 0x12, 0x6, 0x1FFFFFFFF) = 0xA000 0 mmap(0x10000B000, 0x1F10, 0x1, 0x12, 0x6, 0x1FFFFFFFF) = 0xB000 0 close(0x6) = 0 0 stat64("/usr/lib/libSystem.B.dylib\0", 0x7FFF5FBFC4C0, 0x7FFF5FBFCB00) = 0 0 stat64("/usr/lib/system/libmathCommon.A.dylib\0", 0x7FFF5FBFC370, 0x7FFF5FBFC9B0) = 0 0 madvise(0x7FFF89610000, 0x2000, 0x5) = 0 0 open("/dev/dtracehelper\0", 0x2, 0x7FFF5FC45258) = 6 0 ioctl(0x6, 0x80086804, 0x7FFF5FBFD0A0) = 0 0 close(0x6) = 0 0 stat64("/usr/lib/libstdc++.6.dylib\0", 0x7FFF5FBFC4B0, 0x7FFF5FBFCAF0) = 0 0 open("/dev/dtracehelper\0", 0x2, 0x7FFF5FC45320) = 6 0

error: git-fast-import died of signal 13 ---- 8< ----

blob does exist, it just seems to end early:

--- big 2010-12-12 16:56:32.000000000 -0500 +++ blob 2010-12-12 16:56:33.000000000 -0500