Jak provést příkaz Pstack na CentOS/RHEL

Příkaz pstack(1) vytiskne trasování zásobníku běžícího procesu. Pomocí níže uvedených kroků jej nainstalujte do systému CentOS/RHEL.

Co balíček poskytuje příkaz pstack

Pro CentOS/RHEL 5

Balíček pstack lze nainstalovat pomocí:

# yum install pstack

Pro CentOS/RHEL 6,7

V CentOS/RHEL 6/7 poskytuje nástroj pstack gdb balík. Chcete-li nainstalovat gdb, postupujte takto:

# yum install gdb

Balíček gdb bude obsahovat příkazy gstack a pstack. Například:

# rpm -ql gdb-7.2-92.el6.x86_64 | egrep "pstack|gstack"
/usr/bin/gstack
/usr/bin/pstack

Použití příkazu

Poté jej můžete nazvat buď „pstack “ nebo „gstack ‘.

# gstack
Usage: gstack [process-id]

# pstack 
Usage: pstack [process-id]

Příklady

# gstack 21142
Thread 2 (Thread 0x7f1b3181b700 (LWP 21148)):
#0 0x0000003dfaadf3e7 in ppoll () from /lib64/libc.so.6
#1 0x0000003a4f43298e in pa_rtpoll_run () from /usr/lib64/libpulsecore-0.9.21.so
#2 0x00007f1b27bfb0a7 in ?? () from /usr/lib64/pulse-0.9.21/modules/module-null-sink.so
#3 0x00000032b12389b8 in ?? () from /usr/lib64/libpulsecommon-0.9.21.so
#4 0x0000003dfae079d1 in start_thread () from /lib64/libpthread.so.0
#5 0x0000003dfaae89dd in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f1b376ad740 (LWP 21142)):
#0 0x0000003dfaadf3e7 in ppoll () from /lib64/libc.so.6
#1 0x00000032b161cb87 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#2 0x00000032b161dec9 in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#3 0x00000032b161df80 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#4 0x000000000040a927 in main ()

# pstack 21142
Thread 2 (Thread 0x7f1b3181b700 (LWP 21148)):
#0 0x0000003dfaadf3e7 in ppoll () from /lib64/libc.so.6
#1 0x0000003a4f43298e in pa_rtpoll_run () from /usr/lib64/libpulsecore-0.9.21.so
#2 0x00007f1b27bfb0a7 in ?? () from /usr/lib64/pulse-0.9.21/modules/module-null-sink.so
#3 0x00000032b12389b8 in ?? () from /usr/lib64/libpulsecommon-0.9.21.so
#4 0x0000003dfae079d1 in start_thread () from /lib64/libpthread.so.0
#5 0x0000003dfaae89dd in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f1b376ad740 (LWP 21142)):
#0 0x0000003dfaadf3e7 in ppoll () from /lib64/libc.so.6
#1 0x00000032b161cb87 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#2 0x00000032b161dec9 in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#3 0x00000032b161df80 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#4 0x000000000040a927 in main ()