linux程序管理雜記(2)
阿新 • • 發佈:2019-02-10
vmstat
[[email protected] Packages]# vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 56 15876 38204 295152 0 0 4 3 21 18 0 1 99 0 0
每隔一秒重新整理一次
[[email protected] Packages]# vmstat 1
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 56 15876 38244 295156 0 0 4 3 21 18 0 1 99 0 0
0 0 56 15876 38244 295156 0 0 0 0 19 18 0 0 100 0 0
每隔一秒重新整理一次,刷5次
[[email protected] Packages]# vmstat 1 5
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 56 16016 38252 295156 0 0 4 3 21 18 0 1 99 0 0
0 0 56 16000 38252 295156 0 0 0 0 19 18 0 0 100 0 0
0 0 56 16000 38252 295156 0 0 0 0 15 19 0 0 100 0 0
0 0 56 16000 38252 295156 0 0 0 0 19 20 0 0 100 0 0
0 0 56 16000 38252 295156 0 0 0 0 18 22 0 0 100 0 0
顯示記憶體統計資料
[[email protected] Packages]# vmstat -s
500920 total memory
485152 used memory
166076 active memory
209088 inactive memory
15768 free memory
38484 buffer memory
295160 swap cache
4194300 total swap
56 used swap
4194244 free swap
12253 non-nice user cpu ticks
1030 nice user cpu ticks
45577 system cpu ticks
13913975 idle cpu ticks
19671 IO-wait cpu ticks
2005 IRQ cpu ticks
56053 softirq cpu ticks
0 stolen cpu ticks
574569 pages paged in
365158 pages paged out
0 pages swapped in
14 pages swapped out
2913423 interrupts
2544112 CPU context switches
1465975126 boot time
19538 forks
pmap
顯示程序1程序的記憶體對映表
[[email protected] Packages]# pmap 1
1: /sbin/init
00007fa85b25f000 52K r-x-- /lib64/libnss_files-2.12.so
00007fa85b26c000 2044K ----- /lib64/libnss_files-2.12.so
00007fa85b46b000 4K r---- /lib64/libnss_files-2.12.so
00007fa85b46c000 4K rw--- /lib64/libnss_files-2.12.so
00007fa85b46d000 1576K r-x-- /lib64/libc-2.12.so
00007fa85b5f7000 2048K ----- /lib64/libc-2.12.so
00007fa85b7f7000 16K r---- /lib64/libc-2.12.so
00007fa85b7fb000 8K rw--- /lib64/libc-2.12.so
00007fa85b7fd000 16K rw--- [ anon ]
00007fa85b801000 88K r-x-- /lib64/libgcc_s-4.4.7-20120601.so.1
00007fa85b817000 2044K ----- /lib64/libgcc_s-4.4.7-20120601.so.1
00007fa85ba16000 4K rw--- /lib64/libgcc_s-4.4.7-20120601.so.1
00007fa85ba17000 28K r-x-- /lib64/librt-2.12.so
00007fa85ba1e000 2044K ----- /lib64/librt-2.12.so
00007fa85bc1d000 4K r---- /lib64/librt-2.12.so
00007fa85bc1e000 4K rw--- /lib64/librt-2.12.so
00007fa85bc1f000 92K r-x-- /lib64/libpthread-2.12.so
00007fa85bc36000 2048K ----- /lib64/libpthread-2.12.so
00007fa85be3600
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