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【求助】rsh偶尔会卡住，长时间无响应，网络连接正常

时间：2010-11-03

来源：互联网

有几台机器，已经互相配置好了rsh，任意两个都可以rsh登录。
但其中的某台服务器在rsh连接其它机器时，偶尔会出现rsh ip后长时间无响应的情况，一般1~2分钟后才连接上，最长一次达4分钟多。
其它服务器连接这台服务器有时候也这。
但其它服务器互相连接就都没有问题。每1小时左右就会有2~3次这种情况出现。
网络排查了是正常的

现在不知道这种问题怎样去定位排查。不知道究竟什么原因导致rsh卡住了，哪位遇到过类似的情况，能否给个思路，多谢了

作者: Gubuntu 发布时间: 2010-11-03

本帖最后由 Gubuntu 于 2011-01-07 10:01 编辑

哪位能给个思路呀，下面是truss结果，发现其中两个地方卡住了，在sleeping
试了多次，时间比较长的时候都是下面两个地方在sleeping

重启过rlogin服务，没有解决

（truss信息比较长，下面分3次贴出）

作者: Gubuntu 发布时间: 2011-01-07

0.0000 execve("/usr/bin/rsh", 0xFFBFFC8C, 0xFFBFFC9C) argc = 3
0.0033 resolvepath("/usr/lib/ld.so.1", "/lib/ld.so.1", 1023) = 12
0.0002 resolvepath("/usr/bin/rsh", "/usr/bin/rsh", 1023) = 12
0.0001 stat64("/usr/bin/rsh", 0xFFBFF94

= 0
0.0001 open("/var/ld/ld.config", O_RDONLY) = 3
0.0001 fstat64(3, 0xFFBFF4B

= 0
0.0001 mmap(0x00000000, 128, PROT_READ, MAP_SHARED, 3, 0) = 0xFF3F0000
0.0000 close(3) = 0
0.0001 stat64("/usr/openwin/lib/libc.so.1", 0xFFBFF0D

Err#2 ENOENT
0.0001 stat64("/usr/lib/gss/libc.so.1", 0xFFBFF0D

Err#2 ENOENT
0.0001 stat64("/usr/lib/krb5/libc.so.1", 0xFFBFF0D

Err#2 ENOENT
0.0001 stat64("/lib/libc.so.1", 0xFFBFF0D

= 0
0.0001 resolvepath("/lib/libc.so.1", "/lib/libc.so.1", 1023) = 14
0.0001 open("/lib/libc.so.1", O_RDONLY) = 3
0.0001 mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 3, 0) = 0xFF3A0000
0.0000 mmap(0x00010000, 1294336, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF200000
0.0001 mmap(0xFF200000, 1237141, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 3, 0) = 0xFF200000
0.0001 mmap(0xFF330000, 35645, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 3, 1245184) = 0xFF330000
0.0001 mmap(0xFF33A000, 1416, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANON, -1, 0) = 0xFF33A000
0.0002 memcntl(0xFF200000, 144992, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
0.0000 close(3) = 0
0.0005 mmap(0x00010000, 24576, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF390000
0.0001 munmap(0xFF3A0000, 3276

= 0
0.0000 getcontext(0xFFBFF7B

0.0001 getrlimit(RLIMIT_STACK, 0xFFBFF79

= 0
0.0000 getpid() = 24178 [24177]
0.0001 setustack(0xFF392A8

0.0001 mmap(0x00000000, 8192, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON, -1, 0) = 0xFF3A0000
0.0002 getuid() = 0 [0]
0.0001 brk(0x00071928) = 0
0.0001 brk(0x00073928) = 0
0.0001 stat64("/platform/SUNW,Sun-Fire/lib/libc_psr.so.1", 0xFFBF26F0) = 0
0.0001 resolvepath("/platform/SUNW,Sun-Fire/lib/libc_psr.so.1", "/platform/sun4u-us3/lib/libc_psr.so.1", 1023) = 37
0.0001 open("/platform/SUNW,Sun-Fire/lib/libc_psr.so.1", O_RDONLY) = 3
0.0001 mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 3, 0) = 0xFF380000
0.0001 close(3) = 0
0.0000 munmap(0xFF380000, 32768) = 0
0.0001 getuid() = 0 [0]
0.0001 getuid() = 0 [0]
0.0000 getuid() = 0 [0]
0.0001 getpid() = 24178 [24177]
0.0001 open("/proc/24178/psinfo", O_RDONLY) = 3
0.0001 read(3, "02\0\0\0\0\0\001\0\0 ^ r".., 336) = 336
0.0001 close(3) = 0

作者: Gubuntu 发布时间: 2011-01-07

0.0001 mmap(0x00010000, 65536, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF370000
0.0001 getuid() = 0 [0]
0.0000 getuid() = 0 [0]
0.0001 open64("/var/run/name_service_door", O_RDONLY) = 3
0.0001 fcntl(3, F_SETFD, 0x00000001) = 0
0.0000 door_info(3, 0xFF33378

= 0
0.0001 door_call(3, 0xFFBF2F60) = 0
0.0001 stat64("/usr/openwin/lib/libsocket.so.1", 0xFFBF2730) Err#2 ENOENT
0.0001 stat64("/usr/lib/gss/libsocket.so.1", 0xFFBF2730) Err#2 ENOENT
0.0000 stat64("/usr/lib/krb5/libsocket.so.1", 0xFFBF2730) Err#2 ENOENT
0.0001 stat64("/lib/libsocket.so.1", 0xFFBF2730) = 0
0.0001 resolvepath("/lib/libsocket.so.1", "/lib/libsocket.so.1", 1023) = 19
0.0001 open("/lib/libsocket.so.1", O_RDONLY) = 4
0.0001 mmap(0x00010000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_ALIGN, 4, 0) = 0xFF360000
0.0001 mmap(0x00010000, 122880, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF340000
0.0000 mmap(0xFF340000, 44594, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 4, 0) = 0xFF340000
0.0001 mmap(0xFF35C000, 4277, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 4, 49152) = 0xFF35C000
0.0001 munmap(0xFF34C000, 65536) = 0
0.0000 memcntl(0xFF340000, 14320, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
0.0001 close(4) = 0
0.0000 stat64("/usr/openwin/lib/libnsl.so.1", 0xFFBF266

Err#2 ENOENT
0.0001 stat64("/lib/libnsl.so.1", 0xFFBF266

= 0
0.0001 resolvepath("/lib/libnsl.so.1", "/lib/libnsl.so.1", 1023) = 16
0.0001 open("/lib/libnsl.so.1", O_RDONLY) = 4
0.0001 mmap(0xFF360000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 4, 0) = 0xFF360000
0.0000 mmap(0x00010000, 729088, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF100000
0.0001 mmap(0xFF100000, 595830, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_TEXT, 4, 0) = 0xFF100000
0.0001 mmap(0xFF1A2000, 33777, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_INITDATA, 4, 598016) = 0xFF1A2000
0.0001 mmap(0xFF1AC000, 23264, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANON, -1, 0) = 0xFF1AC000
0.0000 munmap(0xFF192000, 65536) = 0
0.0002 memcntl(0xFF100000, 89760, MC_ADVISE, MADV_WILLNEED, 0, 0) = 0
0.0000 close(4) = 0
0.0001 stat64("/usr/openwin/lib/libc.so.1", 0xFFBF266

Err#2 ENOENT
0.0001 stat64("/usr/openwin/lib/libc.so.1", 0xFFBF266

Err#2 ENOENT
0.0004 munmap(0xFF360000, 3276

= 0
0.0001 sigfillset(0xFF3392F0) = 0
0.0001 open("/etc/netconfig", O_RDONLY|O_LARGEFILE) = 4
0.0001 fcntl(4, F_DUPFD, 0x00000100) Err#22 EINVAL
0.0001 read(4, " # p r a g m a i d e n".., 1024) = 1024
0.0001 read(4, " t s t p i _ c".., 1024) = 215
0.0001 read(4, 0x00072FB0, 1024) = 0
0.0001 lseek(4, 0, SEEK_SET) = 0
0.0000 read(4, " # p r a g m a i d e n".., 1024) = 1024
0.0002 brk(0x0007392

= 0
0.0000 brk(0x0007592

= 0
0.0001 read(4, " t s t p i _ c".., 1024) = 215
0.0001 read(4, 0x00072FB0, 1024) = 0

作者: Gubuntu 发布时间: 2011-01-07

0.0001 close(4) = 0
0.0001 open("/dev/udp", O_RDONLY) = 4
0.0001 ioctl(4, SIOCGLIFNUM, 0xFFBF3034) = 0
0.0001 close(4) = 0
0.0001 getuid() = 0 [0]
0.0001 getuid() = 0 [0]
0.0000 door_info(3, 0xFFBF2D40) = 0
0.0002 door_call(3, 0xFFBF2DE

= 0
0.0001 getpid() = 24178 [24177]
0.0001 brk(0x0007592

= 0
0.0001 brk(0x0007792

= 0
0.0000 brk(0x0007992

= 0
0.0001 open("/etc/default/nss", O_RDONLY|O_LARGEFILE) = 4
0.0001 fcntl(4, F_DUPFD, 0x00000100) Err#22 EINVAL
0.0001 read(4, " # i d e n t\t " @ ( #".., 1024) = 1024
0.0001 read(4, " y t h o s e\n # f u n".., 1024) = 211
0.0001 read(4, 0x00077CD8, 1024) = 0
0.0000 close(4) = 0
0.0001 schedctl() = 0xFF3A4000
0.0001 sigaction(SIGPIPE, 0xFFBF2DD8, 0xFFBF3170) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00100000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0001 so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 4
0.0001 setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2C54, 4, SOV_DEFAULT) = 0
0.0005 setsockopt(4, tcp, TCP_ANONPRIVBIND, 0xFFBF2C54, 4, SOV_DEFAULT) = 0
0.0001 bind(4, 0xFFBF2D18, 32, SOV_SOCKBSD) = 0
0.0000 getsockname(4, 0xFFBF2D18, 0xFFBF2C4C, SOV_DEFAULT) = 0
0.0001 setsockopt(4, tcp, TCP_ANONPRIVBIND, 0xFFBF2C50, 4, SOV_DEFAULT) = 0
0.0001 setsockopt(4, tcp, TCP_EXCLBIND, 0xFFBF2C50, 4, SOV_DEFAULT) = 0
0.0001 ioctl(4, FIOSETOWN, 0xFFBF2E14) = 0
0.0003 connect(4, 0xFFBF3050, 32, SOV_DEFAULT) = 0
0.0001 so_socket(PF_INET6, SOCK_STREAM, IPPROTO_IP, "", SOV_DEFAULT) = 5
0.0001 setsockopt(5, tcp, TCP_EXCLBIND, 0xFFBF2C54, 4, SOV_DEFAULT) = 0
0.0000 setsockopt(5, tcp, TCP_ANONPRIVBIND, 0xFFBF2C54, 4, SOV_DEFAULT) = 0
0.0001 bind(5, 0xFFBF2D18, 32, SOV_SOCKBSD) = 0
0.0001 getsockname(5, 0xFFBF2D18, 0xFFBF2C4C, SOV_DEFAULT) = 0
0.0000 setsockopt(5, tcp, TCP_ANONPRIVBIND, 0xFFBF2C50, 4, SOV_DEFAULT) = 0
0.0001 setsockopt(5, tcp, TCP_EXCLBIND, 0xFFBF2C50, 4, SOV_DEFAULT) = 0
0.0001 listen(5, 1, SOV_DEFAULT) = 0
0.0001 write(4, " 8 0 2\0", 4) = 4
pollsys(0xFFBF0DA8, 2, 0x00000000, 0x00000000) (sleeping...)
50.7398 pollsys(0xFFBF0DA8, 2, 0x00000000, 0x00000000) = 1
0.0004 accept(5, 0xFFBF2E88, 0xFFBF300C, SOV_DEFAULT) = 6
0.0001 close(5) = 0
0.0001 write(4, " r o o t\0", 5) = 5
0.0001 write(4, " r o o t\0", 5) = 5
0.0001 write(4, " e x i t\0", 5) = 5
read(4, 0xFFBF2E87, 1) (sleeping...)
29.9169 read(4, "\0", 1) = 1
0.0003 sigaction(SIGPIPE, 0xFFBF2DD8, 0x00000000) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0001 lwp_sigmask(SIG_SETMASK, 0x00004006, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0001 sigaction(SIGINT, 0x00000000, 0xFFBF31C0) = 0
0.0000 sigaction(SIGINT, 0xFFBF30E0, 0xFFBF31A0) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00004004, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0000 sigaction(SIGQUIT, 0x00000000, 0xFFBF31C0) = 0
0.0001 sigaction(SIGQUIT, 0xFFBF30E0, 0xFFBF31A0) = 0
0.0000 lwp_sigmask(SIG_SETMASK, 0x00004000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0001 sigaction(SIGTERM, 0x00000000, 0xFFBF31C0) = 0
0.0000 sigaction(SIGTERM, 0xFFBF30E0, 0xFFBF31A0) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0005 fork1() = 24820
0.0003 lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0002 ioctl(6, FIONBIO, 0xFFBFFC20) = 0
0.0000 ioctl(4, FIONBIO, 0xFFBFFC20) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0000 sigaction(SIGPIPE, 0xFFBF30E0, 0xFFBF31A0) = 0
0.0001 lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
0.0120 pollsys(0xFFBF3138, 2, 0x00000000, 0x00000000) = 1
0.0001 read(4, 0xFFBF337C, 51200) = 0
0.0007 pollsys(0xFFBF3138, 1, 0x00000000, 0x00000000) = 1
0.0000 read(6, 0xFFBF337C, 51200) = 0
0.0001 kill(24820, SIGKILL) = 0
0.0004 _exit(0)

作者: Gubuntu 发布时间: 2011-01-07

看看/etc/nsswitch.conf里是不是配置了nis或dns之类的

作者: doging 发布时间: 2011-01-07