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我有一個cron腳本掛在每晚（在分段環境中），但我不能像以前那樣使用dgb。dbg瞭解爲什麼PHP腳本掛起
下面的過程是：PS auxf | grep的PHP
www-data 10187 0.0 0.0 4336 684 ? Ss 02:00 0:00 \_ /bin/sh -c /usr/bin/php -c /etc/php5/cli/php-zend.ini $BASE/resources/cron/cli.php mtd=generateTSAlarms
www-data 10194 0.8 1.0 303612 43984 ? t 02:00 3:29 \_ /usr/bin/php -c /etc/php5/cli/php-zend.ini $BASE/resources/cron/cli.php mtd=generateAlarms
PHP -v：
PHP 5.6.27-0+deb8u1 (cli) (built: Oct 15 2016 15:53:28)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies
我搶gdbinit從https://raw.githubusercontent.com/php/php-src/PHP-5.6.27/.gdbinit，並運行GBD -p 10194.我加載gdbinit文件並嘗試
(gdb) source /home/cedric/php_5.6.27_gdbinit
(gdb) zbacktrace
Attempt to extract a component of a value that is not a structure.
(gdb) bt
#0 0x00007f532b0eef2d in nanosleep() at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f532b0eedc4 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:137
#2 0x00000000006107ba in zif_sleep()
#3 0x00000000006e5eaa in dtrace_execute_internal()
#4 0x00000000007a6860 in ??()
#5 0x0000000000734bb0 in execute_ex()
#6 0x00000000006e5d48 in dtrace_execute_ex()
#7 0x00000000007a6da3 in ??()
#8 0x0000000000734bb0 in execute_ex()
#9 0x00000000006e5d48 in dtrace_execute_ex()
#10 0x00000000007a6da3 in ??()
#11 0x0000000000734bb0 in execute_ex()
#12 0x00000000006e5d48 in dtrace_execute_ex()
#13 0x00000000007a6da3 in ??()
#14 0x0000000000734bb0 in execute_ex()
#15 0x00000000006e5d48 in dtrace_execute_ex()
#16 0x00000000006f8910 in zend_execute_scripts()
#17 0x0000000000693cbb in php_execute_script()
#18 0x00000000007a881b in ??()
#19 0x0000000000462bdd in main()
爲什麼zbacktrace不能正常工作？