Il comando pstack(1) stampa una traccia dello stack di un processo in esecuzione. Utilizzare i passaggi seguenti per installarlo su un sistema CentOS/RHEL.
Quale pacchetto fornisce il comando pstack
Per CentOS/RHEL 5
Il pacchetto pstack può essere installato con:
# yum install pstack
Per CentOS/RHEL 6,7
In CentOS/RHEL 6/7, lo strumento pstack è fornito da gdb pacchetto. Per installare gdb, eseguire:
# yum install gdb
Il pacchetto gdb includerà i comandi gstack e pstack. Ad esempio:
# rpm -ql gdb-7.2-92.el6.x86_64 | egrep "pstack|gstack" /usr/bin/gstack /usr/bin/pstack
Utilizzo dei comandi
Puoi quindi chiamarlo come "pstack ' o 'gstack '.
# gstack Usage: gstack [process-id]
# pstack Usage: pstack [process-id]
Esempi
# 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 ()