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发布时间:2017-05-19 来源:服务器之家

¥ pstree -p work | grep ad
sshd(22669)---bash(22670)---ad_preprocess(4551)-+-{ad_preprocess}(4552)
|-{ad_preprocess}(4553)
|-{ad_preprocess}(4554)
|-{ad_preprocess}(4555)
|-{ad_preprocess}(4556)
`-{ad_preprocess}(4557)

work为工感化户,-p为显示过程辨认码,ad_preprocess共启动了6个子线程,加上主线程共7个线程

2. ps -Lf

¥ ps -Lf 4551
UID        PID  PPID   LWP  C NLWP STIME TTY      STAT   TIME CMD
work      4551 22670  4551  2    7 16:30 pts/2    Sl+    0:02 ./ad_preprocess
work      4551 22670  4552  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess
work      4551 22670  4553  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess
work      4551 22670  4554  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess
work      4551 22670  4555  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess
work      4551 22670  4556  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess
work      4551 22670  4557  0    7 16:30 pts/2    Sl+    0:00 ./ad_preprocess

过程共启动了7个线程

3. pstack

pstack显示每个过程的栈跟踪

¥ pstack 4551
Thread 7 (Thread 1084229984 (LWP 4552)):
#0  0 x000000302afc63dc in epoll_wait () /lib64/tls/libc.so.6
#1  0 x00000000006f0730 in ub::EPollEx::poll ()
#2  0 x00000000006f172a in ub::NetReactor::callback ()
#3  0 x00000000006fbbbb in ub::UBTask::CALLBACK ()
#4  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#5  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#6  0 x0000000000000000 in ?? ()
Thread 6 (Thread 1094719840 (LWP 4553)):
#0  0 x000000302afc63dc in epoll_wait () /lib64/tls/libc.so.6
#1  0 x00000000006f0730 in ub::EPollEx::poll ()
#2  0 x00000000006f172a in ub::NetReactor::callback ()
#3  0 x00000000006fbbbb in ub::UBTask::CALLBACK ()
#4  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#5  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#6  0 x0000000000000000 in ?? ()
Thread 5 (Thread 1105209696 (LWP 4554)):
#0  0 x000000302b80baa5 in __nanosleep_nocancel ()
#1  0 x000000000079e758 in comcm::ms_sleep ()
#2  0 x00000000006c8581 in ub::UbClientManager::healthyCheck ()
#3  0 x00000000006c8471 in ub::UbClientManager::start_healthy_check ()
#4  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#5  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#6  0 x0000000000000000 in ?? ()
Thread 4 (Thread 1115699552 (LWP 4555)):
#0  0 x000000302b80baa5 in __nanosleep_nocancel ()
#1  0 x0000000000482b0e in armor::armor_check_thread ()
#2  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#3  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#4  0 x0000000000000000 in ?? ()
Thread 3 (Thread 1126189408 (LWP 4556)):
#0  0 x000000302af8f1a5 in __nanosleep_nocancel () /lib64/tls/libc.so.6
#1  0 x000000302af8f010 in sleep () /lib64/tls/libc.so.6
#2  0 x000000000044c972 in Business_config_manager::run ()
#3  0 x0000000000457b83 in Thread::run_thread ()
#4  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#5  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#6  0 x0000000000000000 in ?? ()
Thread 2 (Thread 1136679264 (LWP 4557)):
#0  0 x000000302af8f1a5 in __nanosleep_nocancel () /lib64/tls/libc.so.6
#1  0 x000000302af8f010 in sleep () /lib64/tls/libc.so.6
#2  0 x00000000004524bb in Process_thread::sleep_period ()
#3  0 x0000000000452641 in Process_thread::run ()
#4  0 x0000000000457b83 in Thread::run_thread ()
#5  0 x000000302b80610a in start_thread () /lib64/tls/libpthread.so.0
#6  0 x000000302afc6003 in clone () /lib64/tls/libc.so.6
#7  0 x0000000000000000 in ?? ()
Thread 1 (Thread 182894129792 (LWP 4551)):
#0  0 x000000302af8f1a5 in __nanosleep_nocancel () /lib64/tls/libc.so.6
#1  0 x000000302af8f010 in sleep () /lib64/tls/libc.so.6
#2  0 x0000000000420d79 in Ad_preprocess::run ()
#3  0 x0000000000450ad0 in main ()巴尔扎克