[20190402]跟踪vmstat.txt

来源：这里教程网时间：2026-03-03 13:15:07 作者：

[20190402]跟踪vmstat.txt $ strace -e open vmstat 1 10 open("/u01/app/oracle/product/11.2.0.4/dbhome_1/lib/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/lib/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/lib/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/oracm/lib/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/oracm/lib/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/oracm/lib/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/u01/app/oracle/product/11.2.0.4/dbhome_1/oracm/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/lib/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/lib/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/tls/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/tls/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/x86_64/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/libproc-3.2.7.so", O_RDONLY) = 3 open("/u01/app/oracle/product/11.2.0.4/dbhome_1/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libc.so.6", O_RDONLY) = 3 open("/usr/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/libc.so.6", O_RDONLY) = 3 open("/proc/stat", O_RDONLY) = 3 procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st open("/proc/meminfo", O_RDONLY) = 3 open("/proc/stat", O_RDONLY) = 4 open("/proc/vmstat", O_RDONLY) = 5 0 0 0 119228960 273596 9947928 0 0 3 3 0 0 0 1 99 0 0 0 0 0 119228944 273596 9947928 0 0 0 4 1180 2131 0 0 100 0 0 0 0 0 119228928 273596 9947928 0 0 0 0 1129 2102 0 0 100 0 0 0 0 0 119229056 273596 9947928 0 0 0 0 1130 2097 0 0 100 0 0 0 0 0 119229056 273596 9947928 0 0 0 0 1148 2152 0 0 100 0 0 0 0 0 119228912 273596 9947928 0 0 0 0 1139 2103 0 0 100 0 0 0 0 0 119229168 273596 9947928 0 0 0 0 1122 2101 0 0 100 0 0 0 0 0 119229176 273596 9947928 0 0 0 0 1124 2102 0 0 100 0 0 0 0 0 119229176 273596 9947928 0 0 0 0 1182 2155 0 0 100 0 0 0 0 0 119229296 273596 9947928 0 0 0 0 1138 2094 0 0 100 0 0 --//从open打开的文件句柄看,可以发现打开/proc/stat,/proc/meminfo,/proc/stat,/proc/vmstat来构建输出信息. --//联想到oracle也有一个视图记录v$osstat记录os相关信息. SYS@book> select * from v$bgprocess where NAME like 'MMNL'; PADDR PSERIAL# NAME DESCRIPTION ERROR ---------------- ---------- -------------------- ---------------------------------------- -------- 0000000086205CC0 1 MMNL Manageability Monitor Process 2 0 --//收集信息主要包括mmnl进程. $ ps -ef | grep ora_mmnl_boo[k] oracle 56355 1 0 08:38 ? 00:00:13 ora_mmnl_book $ strace -fTtt -e open -p 56355 Process 56355 attached - interrupt to quit 17:26:43.091236 open("/proc/mounts", O_RDONLY) = 12 <0.000065> 17:26:43.092005 open("/proc/stat", O_RDONLY) = 12 <0.000038> 17:26:43.092729 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000028> 17:26:43.094959 open("/proc/mounts", O_RDONLY) = 13 <0.000046> 17:26:43.095541 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000031> 17:26:43.097678 open("/proc/mounts", O_RDONLY) = 13 <0.000039> 17:26:43.098220 open("/proc/loadavg", O_RDONLY) = 12 <0.000030> 17:26:43.098623 open("/proc/stat", O_RDONLY) = 12 <0.000029> 17:26:43.099790 open("/proc/mounts", O_RDONLY) = 12 <0.000046> 17:26:43.100255 open("/proc/stat", O_RDONLY) = 12 <0.000035> 17:26:58.115820 open("/proc/mounts", O_RDONLY) = 12 <0.000060> 17:26:58.116411 open("/proc/stat", O_RDONLY) = 12 <0.000035> 17:26:58.117141 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000033> 17:26:58.119449 open("/proc/mounts", O_RDONLY) = 13 <0.000047> 17:26:58.120029 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000031> 17:26:58.122269 open("/proc/mounts", O_RDONLY) = 13 <0.000048> 17:26:58.122855 open("/proc/loadavg", O_RDONLY) = 12 <0.000031> 17:26:58.123257 open("/proc/stat", O_RDONLY) = 12 <0.000030> 17:27:13.138885 open("/proc/mounts", O_RDONLY) = 12 <0.000063> 17:27:13.139463 open("/proc/stat", O_RDONLY) = 12 <0.000042> 17:27:13.140179 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000030> 17:27:13.142463 open("/proc/mounts", O_RDONLY) = 13 <0.000046> 17:27:13.143043 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000031> 17:27:13.145260 open("/proc/mounts", O_RDONLY) = 13 <0.000043> 17:27:13.145852 open("/proc/loadavg", O_RDONLY) = 12 <0.000030> 17:27:13.146257 open("/proc/stat", O_RDONLY) = 12 <0.000030> 17:27:19.152746 open("/proc/56321/stat", O_RDONLY) = 12 <0.000041> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ $ ps -ef | grep 5632[1] oracle 56321 1 0 08:38 ? 00:00:04 ora_pmon_book ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 17:27:28.161875 open("/proc/mounts", O_RDONLY) = 12 <0.000062> 17:27:28.162470 open("/proc/stat", O_RDONLY) = 12 <0.000036> 17:27:28.163213 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000032> 17:27:28.165590 open("/proc/mounts", O_RDONLY) = 13 <0.000045> 17:27:28.166170 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000031> 17:27:28.168404 open("/proc/mounts", O_RDONLY) = 13 <0.000045> 17:27:28.168971 open("/proc/loadavg", O_RDONLY) = 12 <0.000037> 17:27:28.169380 open("/proc/stat", O_RDONLY) = 12 <0.000035> 17:27:43.186295 open("/proc/mounts", O_RDONLY) = 12 <0.000074> 17:27:43.186846 open("/proc/stat", O_RDONLY) = 12 <0.000040> 17:27:43.187613 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000034> 17:27:43.189873 open("/proc/mounts", O_RDONLY) = 13 <0.000048> 17:27:43.190499 open("/proc/cpuinfo", O_RDONLY) = 12 <0.000032> 17:27:43.192716 open("/proc/mounts", O_RDONLY) = 13 <0.000040> 17:27:43.193310 open("/proc/loadavg", O_RDONLY) = 12 <0.000031> 17:27:43.193736 open("/proc/stat", O_RDONLY) = 12 <0.000030> 17:27:43.194922 open("/proc/mounts", O_RDONLY) = 12 <0.000045> 17:27:43.195453 open("/proc/stat", O_RDONLY) = 12 <0.000031> ^CProcess 56355 detached --//实际上oracle也非常类似,ora_mmnl_book进程大约每15秒读取相关/proc目录的虚拟文件,收集相关信息. --//实际上oracle许多监测工具都非常类似,相关/proc目录的虚拟文件,收集相关信息. $ strace -fTr -e open dstat 2 10 1>/dev/null ... 0.000112 open("/usr/lib64/python2.4/getopt.pyc", O_RDONLY) = 4 <0.000020> 0.000595 open("/proc/uptime", O_RDONLY) = 3 <0.000032> 0.000361 open("/proc/stat", O_RDONLY) = 3 <0.000029> 0.002903 open("/proc/diskstats", O_RDONLY) = 4 <0.000029> 0.002209 open("/proc/net/dev", O_RDONLY) = 5 <0.000048> 0.000601 open("/proc/vmstat", O_RDONLY) = 6 <0.000028> 2.000639 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000584 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000375 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000302 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000446 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000549 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000343 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000534 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000448 --- SIGALRM (Alarm clock) @ 0 (0) --- 2.000365 --- SIGALRM (Alarm clock) @ 0 (0) --- # strace -f -e open -o /tmp/x1.txt smem -tk -U oracle -P "ora_" 1>/dev/null --//查看/tmp/x1.txt ... 63962 open("/proc", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 3 63962 open("/proc/1/cmdline", O_RDONLY) = 3 63962 open("/proc/2/cmdline", O_RDONLY) = 3 63962 open("/proc/3/cmdline", O_RDONLY) = 3 63962 open("/proc/5/cmdline", O_RDONLY) = 3 .... --//先检查命令是否包含"ora_" ... 63962 open("/etc/nsswitch.conf", O_RDONLY) = 3 63962 open("/etc/ld.so.cache", O_RDONLY) = 3 63962 open("/lib64/libnss_files.so.2", O_RDONLY) = 3 63962 open("/etc/passwd", O_RDONLY) = 3 63962 open("/proc/63788/smaps", O_RDONLY) = 3 63962 open("/proc/63790/stat", O_RDONLY) = 3 63962 open("/proc/63790/cmdline", O_RDONLY) = 3 63962 open("/proc/63790/smaps", O_RDONLY) = 3 63962 open("/proc/63792/stat", O_RDONLY) = 3 63962 open("/proc/63792/cmdline", O_RDONLY) = 3 63962 open("/proc/63792/smaps", O_RDONLY) = 3 63962 open("/proc/63796/stat", O_RDONLY) = 3 63962 open("/proc/63796/cmdline", O_RDONLY) = 3 .. --//检查用户是否oracle,然后查看smaps获得内存使用...等等.