4、ps 命令用于显示进程的状态，带 > 标识代表是活跃的进程。
crash> ps PID PPID CPU TASK ST %MEM VSZ RSS COMM 0 0 0 ffffffff92e18480 RU 0.0 0 0 [swapper/0] > 0 0 1 ffff90f964f74200 RU 0.0 0 0 [swapper/1] 0 0 2 ffff90f964f75280 RU 0.0 0 0 [swapper/2] > 0 0 3 ffff90f964f76300 RU 0.0 0 0 [swapper/3] 0 0 4 ffff90f965760000 RU 0.0 0 0 [swapper/4] 0 0 5 ffff90f965761080 RU 0.0 0 0 [swapper/5] 0 0 6 ffff90f965762100 RU 0.0 0 0 [swapper/6] > 0 0 7 ffff90f965763180 RU 0.0 0 0 [swapper/7] 1 0 3 ffff90f964b60000 IN 0.0 43460 3816 systemd 这里忽略部分信息...... 1045 1 6 ffff90f91038c200 IN 0.0 110208 880 agetty 1144 1 3 ffff90f966f6a100 IN 0.0 32544 4304 AliYunDunUpdate 1145 1 3 ffff90f90b3a3180 IN 0.0 32544 4304 AliYunDunUpdate 1146 1 1 ffff90f90b3a2100 IN 0.0 32544 4304 AliYunDunUpdate 1161 1 7 ffff90f978bcb180 IN 0.0 32544 4304 AliYunDunUpdate 1165 1 1 ffff90f910389080 IN 0.0 802872 11300 aliyun-service 1166 1 3 ffff90f978bcc200 IN 0.0 802872 11300 aliyun-service 1170 1 5 ffff90f978bc8000 IN 0.0 802872 11300 aliyun-service 1180 1 3 ffff90f90c3f2100 IN 0.0 802872 11300 aliyun-service 1188 1 5 ffff90f91038d280 IN 0.0 4936 2556 matchpathcond 1191 1 5 ffff90f91038b180 IN 0.0 328 208 postcated 1193 1 7 ffff90f977398000 IN 0.0 3304 184 telinited 1194 1193 5 ffff90f910388000 IN 0.0 3436 1244 telinited 1206 1 0 ffff90f966f68000 IN 0.0 5088 1676 devlinked 1209 1 1 ffff90f970b40000 IN 0.0 172 40 logrotated 1313 1 1 ffff90f90f7d4200 IN 0.0 574284 17500 gmain 1314 1 7 ffff90f90f7d2100 IN 0.0 574284 17500 tuned 1322 1 5 ffff90f9783b8000 IN 0.0 139536 22220 AliYunDun 1323 1 1 ffff90f9533eb180 IN 0.0 139536 22220 AliYunDun 1324 1 5 ffff90f9533ed280 IN 0.0 139536 22220 AliYunDun 1345 1 3 ffff90f91279d280 IN 0.0 574284 17500 tuned 1346 1 5 ffff90f91279e300 IN 0.0 574284 17500 tuned 1347 1 5 ffff90f90eb84200 IN 0.0 718240 7536 rs:main Q:Reg 1349 1 1 ffff90f91279b180 IN 0.0 139536 22220 AliYunDun 1350 1 1 ffff90f91279c200 IN 0.0 139536 22220 AliYunDun 1351 1 1 ffff90f90b3a5280 IN 0.0 139536 22220 AliYunDun 1352 1 4 ffff90f90b3a1080 IN 0.0 139536 22220 AliYunDun 1353 1 5 ffff90f90b3a6300 IN 0.0 139536 22220 AliYunDun 1354 1 5 ffff90f90b3a4200 IN 0.0 139536 22220 AliYunDun 1355 1 1 ffff90f90b3a0000 IN 0.0 139536 22220 AliYunDun 1357 1 7 ffff90f90b780000 IN 0.0 139536 22220 AliYunDun 1358 1 5 ffff90f90b781080 IN 0.0 139536 22220 AliYunDun 1359 1 3 ffff90f972361080 IN 0.0 139536 22220 AliYunDun 1360 1 3 ffff90f972364200 IN 0.0 139536 22220 AliYunDun 1361 1 7 ffff90f972366300 IN 0.0 139536 22220 AliYunDun > 1362 1 5 ffff90f972365280 RU 0.0 139536 22220 AliYunDun 1363 1 5 ffff90f97b76d280 IN 0.0 139536 22220 AliYunDun 1401 1 3 ffff90f97638d280 IN 0.0 139536 22220 AliYunDun 1402 1 1 ffff90f97638e300 IN 0.0 139536 22220 AliYunDun 1403 1 7 ffff90f97638b180 IN 0.0 139536 22220 AliYunDun 1404 1 7 ffff90f97b76b180 IN 0.0 139536 22220 AliYunDun 1405 1 5 ffff90f97b76c200 IN 0.0 139536 22220 AliYunDun 1406 1 5 ffff90f97b76e300 IN 0.0 139536 22220 AliYunDun 1483 1 5 ffff90f970b45280 IN 0.0 112936 4344 sshd 1570 1483 7 ffff90f90e386300 IN 0.0 157640 6308 sshd 2036 1 1 ffff90f975791080 IN 0.0 802872 11300 aliyun-service 2060 1570 1 ffff90f90c3f4200 IN 0.0 157640 2508 sshd 2066 2060 1 ffff90f90cf8d280 IN 0.0 115548 2084 bash 2963 1 5 ffff90f9767d3180 IN 0.0 328 264 postcated 2973 1 2 ffff90f9767cb180 IN 0.0 5084 1672 devlinked 2977 1 7 ffff90f9767d1080 IN 0.0 172 44 logrotated 3923 2066 7 ffff90f9783be300 IN 0.0 241360 4640 sudo 3924 3923 5 ffff90f975be0000 IN 0.0 191872 2360 su 3925 3924 1 ffff90f90eb86300 IN 0.0 115680 2160 bash 4507 1 1 ffff90f90c3f0000 IN 0.0 17816 2096 assist_daemon 4508 1 7 ffff90f90c3f3180 IN 0.0 17816 2096 Timer thread 4509 1 1 ffff90f90c3f6300 IN 0.0 17816 2096 assist_daemon 4510 1 1 ffff90f90c3f1080 IN 0.0 17816 2096 Timer thread 5820 1 7 ffff90f90eb83180 IN 0.0 328 208 postcated 5824 1 4 ffff90f9767cc200 IN 0.0 5084 1672 devlinked 5828 1 3 ffff90f975b83180 IN 0.0 172 40 logrotated 9989 1 5 ffff90f90df95280 IN 0.0 328 204 postcated 9993 1 6 ffff90f9767b4200 IN 0.0 5088 1676 devlinked 9997 1 3 ffff90f967b7e300 IN 0.0 172 40 logrotated 15502 1 2 ffff90f966f6b180 IN 0.0 328 208 postcated 15528 1 4 ffff90f9533ee300 IN 0.0 5084 1668 devlinked 15532 1 1 ffff90f9533e8000 IN 0.0 172 40 logrotated 22388 1 3 ffff90f90f7c5280 IN 0.0 328 208 postcated 22392 1 4 ffff90f975be3180 IN 0.0 5088 1676 devlinked 22396 1 5 ffff90f977399080 IN 0.0 172 40 logrotated 30647 1 5 ffff90f9767b6300 IN 0.0 328 208 postcated 30651 1 6 ffff90f975b81080 IN 0.0 5092 1676 devlinked 30655 1 5 ffff90f975b85280 IN 0.0 172 40 logrotated 30779 1 3 ffff90f9757b8000 IN 0.0 2442608 3784 mountinfo 30780 1 2 ffff90f975b86300 IN 0.0 2442608 3784 mountinfo 30781 1 4 ffff90f975b82100 IN 0.0 2442608 3784 mountinfo 30783 1 7 ffff90f975b84200 IN 0.0 2442608 3784 mountinfo 30784 1 1 ffff90f90ebc1080 IN 0.0 2442608 3784 mountinfo 30785 1 1 ffff90f8bb941080 IN 0.0 2442608 3784 mountinfo > 31745 1 0 ffff90f90f7d3180 RU 0.0 2442608 3784 mountinfo > 31746 1 2 ffff90f90f7d6300 RU 0.0 2442608 3784 mountinfo > 31747 1 4 ffff90f90f7d0000 RU 0.0 2442608 3784 mountinfo > 31748 1 6 ffff90f97b76a100 RU 0.0 2442608 3784 mountinfo从输出看出，mountinfo明显是异常进程，是导致本次系统重启的罪魁祸首