Linux中pstack命令怎么用

小编给大家分享一下Linux中pstack命令怎么用，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

Linux常用命令pstack命令 可显示每个进程的栈跟踪。

pstack

显示每个进程的栈跟踪

补充说明

pstack 命令必须由相应进程的属主或 root 运行。可以使用 pstack 来确定进程挂起的位置。此命令允许使用的唯一选项是要检查的进程的 PID。

命令软件包下载地址：https://packages.debian.org/sid/pstack

实例

pstree以树结构显示进程

 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为工作用户，-p为显示进程识别码，ad_preprocess共启动了6个子线程，加上主线程共7个线程。

 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

进程共启动了7个线程

pstack显示每个进程的栈跟踪：

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

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