\u7a0b\u5e8f：\u5b58\u50a8\u5728\u786c\u76d8\u4e0a\u7684\u9759\u6001\u4ee3\u7801\u548c\u6570\u636e\u96c6\u5408，\u662f\u672a\u6267\u884c\u7684\u6307\u4ee4\u5e8f\u5217<\/p>\n
\u8fdb\u7a0b：\u7a0b\u5e8f\u52a8\u6001\u6267\u884c\u7684\u5b9e\u4f8b，\u5305\u62ec\u521b\u5efa\u3001\u8c03\u5ea6\u3001\u6267\u884c\u5230\u6d88\u4ea1\u7684\u5b8c\u6574\u751f\u547d\u5468\u671f<\/p>\n
\u5173\u952e\u533a\u522b：<\/p>\n
\u7a0b\u5e8f\u662f\u9759\u6001\u7684，\u8fdb\u7a0b\u662f\u52a8\u6001\u7684<\/p>\n<\/li>\n
\u7a0b\u5e8f\u662f\u5b58\u50a8\u5728\u5b58\u50a8\u4ecb\u8d28\u4e0a\u7684\u6587\u4ef6，\u8fdb\u7a0b\u662f\u5185\u5b58\u4e2d\u7684\u6267\u884c\u5b9e\u4f53<\/p>\n<\/li>\n
\u4e00\u4e2a\u7a0b\u5e8f\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\u8fdb\u7a0b，\u4e00\u4e2a\u8fdb\u7a0b\u53ea\u80fd\u5bf9\u5e94\u4e00\u4e2a\u7a0b\u5e8f<\/p>\n<\/li>\n<\/ul>\n
\u8fdb\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u884c\u8d44\u6e90\u5206\u914d\u548c\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d，\u6bcf\u4e2a\u8fdb\u7a0b\u62e5\u6709\u72ec\u7acb\u7684\u5730\u5740\u7a7a\u95f4\u548c\u7cfb\u7edf\u8d44\u6e90，\u786e\u4fdd\u8fdb\u7a0b\u95f4\u7684\u9694\u79bb\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n
top<\/p>\n
\u52a8\u6001\u663e\u793a\u7cfb\u7edf\u8fdb\u7a0b\u4fe1\u606f，\u6309CPU\u4f7f\u7528\u7387\u6392\u5e8f，\u5305\u542b：<\/p>\n
PID：\u8fdb\u7a0bID（\u552f\u4e00\u6807\u8bc6）<\/p>\n<\/li>\n
PPID：\u7236\u8fdb\u7a0bID<\/p>\n<\/li>\n
CPU%：CPU\u4f7f\u7528\u7387<\/p>\n<\/li>\n
MEM%：\u5185\u5b58\u4f7f\u7528\u7387<\/p>\n<\/li>\n<\/ul>\n
ps -ef # \u67e5\u770b\u6240\u6709\u8fdb\u7a0b\u8be6\u7ec6\u4fe1\u606f
\nps -aux # \u67e5\u770b\u8fdb\u7a0b\u72b6\u6001\u548c\u8d44\u6e90\u4f7f\u7528
\nps -ef | grep \u8fdb\u7a0b\u540d # \u8fc7\u6ee4\u7279\u5b9a\u8fdb\u7a0b
\nps -aux | grep \u8fdb\u7a0b\u540d # \u8fc7\u6ee4\u5e76\u663e\u793a\u72b6\u6001<\/p>\n
\u5e38\u7528\u9009\u9879\u8bf4\u660e：<\/p>\n
-e：\u663e\u793a\u6240\u6709\u8fdb\u7a0b<\/p>\n<\/li>\n
-f：\u5b8c\u6574\u683c\u5f0f\u663e\u793a<\/p>\n<\/li>\n
-u：\u663e\u793a\u7528\u6237\u76f8\u5173\u4fe1\u606f<\/p>\n<\/li>\n
-x：\u663e\u793a\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef\u7684\u8fdb\u7a0b<\/p>\n<\/li>\n<\/ul>\n
kill -9 PID # \u5f3a\u5236\u7ec8\u6b62\u6307\u5b9a\u8fdb\u7a0b
\nkillall -9 \u8fdb\u7a0b\u540d # \u7ec8\u6b62\u6240\u6709\u540c\u540d\u8fdb\u7a0b<\/p>\n
.\/program & # \u5728\u540e\u53f0\u8fd0\u884c\u7a0b\u5e8f
\njobs # \u67e5\u770b\u540e\u53f0\u4efb\u52a1\u5217\u8868
\nfg %1 # \u5c061\u53f7\u540e\u53f0\u4efb\u52a1\u8c03\u5230\u524d\u53f0
\nCtrl + Z # \u6682\u505c\u524d\u53f0\u4efb\u52a1
\nbg %1 # \u5728\u540e\u53f0\u7ee7\u7eed\u8fd0\u884c\u6682\u505c\u7684\u4efb\u52a1<\/p>\n
nice -n \u4f18\u5148\u7ea7 \u547d\u4ee4 # \u6307\u5b9a\u4f18\u5148\u7ea7\u8fd0\u884c\u7a0b\u5e8f（-20\u523019）
\nrenice -n \u4f18\u5148\u7ea7 PID # \u4fee\u6539\u8fd0\u884c\u4e2d\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7<\/p>\n
\u4f18\u5148\u7ea7\u8bf4\u660e：<\/p>\n
\u6570\u503c\u8d8a\u5c0f\u4f18\u5148\u7ea7\u8d8a\u9ad8（-20\u6700\u9ad8，19\u6700\u4f4e）<\/p>\n<\/li>\n
\u666e\u901a\u7528\u6237\u53ea\u80fd\u964d\u4f4e\u4f18\u5148\u7ea7（0-19）<\/p>\n<\/li>\n
root\u7528\u6237\u53ef\u8bbe\u7f6e\u4efb\u610f\u4f18\u5148\u7ea7<\/p>\n<\/li>\n<\/ul>\n
\u6bcf\u4e2a\u8fdb\u7a0b\u62e5\u6709\u72ec\u7acb\u76844GB\u865a\u62df\u5730\u5740\u7a7a\u95f4（32\u4f4d\u7cfb\u7edf），\u5206\u5e03\u5982\u4e0b：<\/p>\n
0xFFFFFFFF +—————–+
\n | \u5185\u6838\u7a7a\u95f4 | 1GB
\n0xC0000000 +—————–+
\n | \u6808\u533a | \u5411\u4e0b\u589e\u957f
\n +—————–+
\n | \u5806\u533a | \u5411\u4e0a\u589e\u957f
\n +—————–+
\n | \u672a\u521d\u59cb\u5316\u6570\u636e\u6bb5 | .bss\u6bb5
\n +—————–+
\n | \u5df2\u521d\u59cb\u5316\u6570\u636e\u6bb5 | .data\u6bb5
\n +—————–+
\n | \u53ea\u8bfb\u6570\u636e\u6bb5 | .rodata\u6bb5
\n +—————–+
\n | \u4ee3\u7801\u6bb5 | .text\u6bb5
\n0x08048000 +—————–+
\n | \u4fdd\u7559\u533a\u57df |
\n0x00000000 +—————–+<\/p>\n
\u5b58\u653e\u7a0b\u5e8f\u6267\u884c\u7684\u673a\u5668\u6307\u4ee4<\/p>\n<\/li>\n
\u53ea\u8bfb\u5c5e\u6027，\u591a\u4e2a\u8fdb\u7a0b\u53ef\u5171\u4eab\u540c\u4e00\u4ee3\u7801\u6bb5<\/p>\n<\/li>\n
\u5728\u7a0b\u5e8f\u7f16\u8bd1\u65f6\u786e\u5b9a，\u8fd0\u884c\u65f6\u4e0d\u53ef\u4fee\u6539<\/p>\n<\/li>\n<\/ul>\n
.data\u6bb5：\u5df2\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf<\/p>\n<\/li>\n
.bss\u6bb5：\u672a\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf（\u8fd0\u884c\u65f6\u521d\u59cb\u5316\u4e3a0）<\/p>\n<\/li>\n
.rodata\u6bb5：\u5b57\u7b26\u4e32\u5e38\u91cf\u7b49\u53ea\u8bfb\u6570\u636e<\/p>\n<\/li>\n<\/ul>\n
\u52a8\u6001\u5185\u5b58\u5206\u914d\u533a\u57df（malloc\/free）<\/p>\n<\/li>\n
\u624b\u52a8\u7ba1\u7406，\u5411\u9ad8\u5730\u5740\u589e\u957f<\/p>\n<\/li>\n
\u9700\u8981\u7a0b\u5e8f\u5458\u663e\u5f0f\u91ca\u653e\u5185\u5b58<\/p>\n<\/li>\n<\/ul>\n
\u5b58\u653e\u5c40\u90e8\u53d8\u91cf\u548c\u51fd\u6570\u8c03\u7528\u4fe1\u606f<\/p>\n<\/li>\n
\u81ea\u52a8\u7ba1\u7406，\u5411\u4f4e\u5730\u5740\u589e\u957f<\/p>\n<\/li>\n
\u51fd\u6570\u8fd4\u56de\u65f6\u81ea\u52a8\u91ca\u653e<\/p>\n<\/li>\n<\/ul>\n
\u901a\u8fc7MMU（\u5185\u5b58\u7ba1\u7406\u5355\u5143）\u5b9e\u73b0\u865a\u62df\u5730\u5740\u5230\u7269\u7406\u5730\u5740\u7684\u6620\u5c04，\u786e\u4fdd：<\/p>\n
\u6bcf\u4e2a\u8fdb\u7a0b\u62e5\u6709\u72ec\u7acb\u7684\u5730\u5740\u7a7a\u95f4<\/p>\n<\/li>\n
\u8fdb\u7a0b\u95f4\u5185\u5b58\u9694\u79bb，\u63d0\u9ad8\u7cfb\u7edf\u7a33\u5b9a\u6027<\/p>\n<\/li>\n
\u652f\u6301\u5185\u5b58\u5171\u4eab\u548c\u5199\u65f6\u590d\u5236\u6280\u672f<\/p>\n<\/li>\n<\/ul>\n
\u521b\u5efa \u2192 \u5c31\u7eea(R) \u2194 \u8fd0\u884c(R) \u2192 \u7ec8\u6b62(X)
\n \u2193 \u2191
\n \u7b49\u5f85(S\/D) \u2192 \u5c31\u7eea(R)<\/p>\n
\u8fd0\u884c\u6001(R)：\u8fdb\u7a0b\u6b63\u5728CPU\u4e0a\u6267\u884c<\/p>\n<\/li>\n
\u5c31\u7eea\u6001(R)：\u8fdb\u7a0b\u51c6\u5907\u5c31\u7eea，\u7b49\u5f85CPU\u8c03\u5ea6<\/p>\n<\/li>\n
\u53ef\u4e2d\u65ad\u7b49\u5f85\u6001(S)：\u7b49\u5f85\u8d44\u6e90，\u53ef\u88ab\u4fe1\u53f7\u4e2d\u65ad<\/p>\n<\/li>\n
\u4e0d\u53ef\u4e2d\u65ad\u7b49\u5f85\u6001(D)：\u7b49\u5f85\u786c\u4ef6\u8d44\u6e90，\u4e0d\u53ef\u4e2d\u65ad<\/p>\n<\/li>\n
\u505c\u6b62\u6001(T)：\u8fdb\u7a0b\u88ab\u6682\u505c\u6267\u884c<\/p>\n<\/li>\n
\u50f5\u5c38\u6001(Z)：\u8fdb\u7a0b\u5df2\u7ec8\u6b62，\u4f46\u8d44\u6e90\u672a\u56de\u6536<\/p>\n<\/li>\n
\u6b7b\u4ea1\u6001(X)：\u8fdb\u7a0b\u5b8c\u5168\u7ec8\u6b62<\/p>\n<\/li>\n<\/ul>\n
\u6309\u8fdb\u7a0b\u5230\u8fbe\u987a\u5e8f\u8c03\u5ea6<\/p>\n<\/li>\n
\u5b9e\u73b0\u7b80\u5355，\u4f46\u53ef\u80fd\u5bfc\u81f4\u77ed\u8fdb\u7a0b\u7b49\u5f85\u65f6\u95f4\u957f<\/p>\n<\/li>\n<\/ul>\n
\u4f18\u5148\u8c03\u5ea6\u9884\u8ba1\u6267\u884c\u65f6\u95f4\u77ed\u7684\u8fdb\u7a0b<\/p>\n<\/li>\n
\u6700\u5c0f\u5316\u5e73\u5747\u7b49\u5f85\u65f6\u95f4，\u4f46\u9700\u8981\u9884\u77e5\u6267\u884c\u65f6\u95f4<\/p>\n<\/li>\n<\/ul>\n
\u6bcf\u4e2a\u8fdb\u7a0b\u5206\u914d\u56fa\u5b9a\u65f6\u95f4\u7247（5-10ms）<\/p>\n<\/li>\n
\u516c\u5e73\u6027\u597d，\u9002\u5408\u4ea4\u4e92\u5f0f\u7cfb\u7edf<\/p>\n<\/li>\n
\u5b8f\u89c2\u5e76\u884c，\u5fae\u89c2\u4e32\u884c\u6267\u884c<\/p>\n<\/li>\n<\/ul>\n
\u7ed3\u5408\u591a\u79cd\u8c03\u5ea6\u7b56\u7565<\/p>\n<\/li>\n
\u52a8\u6001\u8c03\u6574\u8fdb\u7a0b\u4f18\u5148\u7ea7<\/p>\n<\/li>\n
\u5e73\u8861\u54cd\u5e94\u65f6\u95f4\u548c\u541e\u5410\u91cf<\/p>\n<\/li>\n<\/ul>\n
#include <unistd.h><\/p>\n
pid_t fork(void);<\/p>\n
\u529f\u80fd\u7279\u6027：<\/p>\n
\u521b\u5efa\u5b50\u8fdb\u7a0b，\u5b50\u8fdb\u7a0b\u662f\u7236\u8fdb\u7a0b\u7684\u5b8c\u6574\u526f\u672c<\/p>\n<\/li>\n
\u590d\u5236\u6587\u672c\u6bb5\u3001\u6570\u636e\u6bb5\u3001\u5806\u6808\u7b49\u6240\u6709\u8d44\u6e90<\/p>\n<\/li>\n
\u7236\u5b50\u8fdb\u7a0b\u5e76\u53d1\u6267\u884c，\u6267\u884c\u987a\u5e8f\u4e0d\u786e\u5b9a<\/p>\n<\/li>\n<\/ul>\n
\u8fd4\u56de\u503c\u8bf4\u660e：<\/p>\n
\u7236\u8fdb\u7a0b：\u8fd4\u56de\u5b50\u8fdb\u7a0bPID（>0）<\/p>\n<\/li>\n
\u5b50\u8fdb\u7a0b：\u8fd4\u56de0<\/p>\n<\/li>\n
\u9519\u8bef：\u8fd4\u56de-1<\/p>\n<\/li>\n<\/ul>\n
#include <unistd.h><\/p>\n
pid_t getpid(void); \/\/ \u83b7\u53d6\u5f53\u524d\u8fdb\u7a0bPID
\npid_t getppid(void); \/\/ \u83b7\u53d6\u7236\u8fdb\u7a0bPID<\/p>\n
#include <stdio.h>
\n#include <sys\/types.h>
\n#include <unistd.h><\/p>\n
int main(void)
\n{
\n pid_t pid;<\/p>\n
pid = fork();
\n if(-1 == pid)
\n {
\n perror("fail to fork");
\n return -1;
\n }<\/p>\n
if(pid == 0)
\n {
\n printf("\u6211\u662f\u5b50\u8fdb\u7a0b,PID:%d,PPID:%d\\\\n",getpid(),getppid());
\n }
\n else if(pid >= 1)
\n {
\n printf("\u6211\u662f\u7236\u8fdb\u7a0b,PID:%d,childPID:%d\\\\n",getpid(),pid);
\n }<\/p>\n
printf("hello world\\\\n");<\/p>\n
while(1)
\n {<\/p>\n
}
\n return 0;
\n}<\/p>\n
#include <stdio.h>
\n#include <sys\/types.h>
\n#include <sys\/stat.h>
\n#include <fcntl.h>
\n#include <unistd.h>
\n#include <string.h>
\n#include <dirent.h><\/p>\n
void Listdir(char *pdirpath)
\n{
\n DIR *dp = NULL;
\n struct dirent *pp = NULL;
\n char filepath[512] = {0};
\n char *pstr = NULL;<\/p>\n
dp = opendir(pdirpath);
\n if (NULL == dp)
\n {
\n perror("fail to opendir");
\n return;
\n }<\/p>\n
while (1)
\n {
\n pp = readdir(dp);
\n if (NULL == pp)
\n {
\n break;
\n }<\/p>\n
if ('.' == pp->d_name[0])
\n {
\n continue;
\n }
\n pstr = pp->d_name;<\/p>\n
while(pstr[0] != '.')
\n {
\n if(pstr[0] == 0)
\n {
\n break;
\n }
\n pstr++;
\n }
\n pstr++;
\n if ((!strcmp(pstr,"flv") || !strcmp(pstr,"avi") || !strcmp(pstr,"rmvb") || !strcmp(pstr,"rm")) && pstr[0] != '\\\\0')
\n {
\n sprintf(filepath, "%s\/%s", pdirpath, pp->d_name);
\n printf("%s\\\\n", filepath);
\n }
\n if (pp->d_type == DT_DIR)
\n {
\n Listdir(filepath);
\n }
\n }<\/p>\n
closedir(dp);<\/p>\n
return;
\n}<\/p>\n
int main(void)
\n{
\n char dirpath[256] = {0};<\/p>\n
printf("\u8bf7\u8f93\u5165\u76ee\u5f55\u8def\u5f84:\\\\n");
\n gets(dirpath);<\/p>\n
Listdir(dirpath);<\/p>\n
return 0;
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
1 \u8fdb\u7a0b\u57fa\u7840\u6982\u5ff51.1 \u7a0b\u5e8f\u4e0e\u8fdb\u7a0b\u7684\u533a\u522b\u7a0b\u5e8f：\u5b58\u50a8\u5728\u786c\u76d8\u4e0a\u7684\u9759\u6001\u4ee3\u7801\u548c\u6570\u636e\u96c6\u5408，\u662f\u672a\u6267\u884c\u7684\u6307\u4ee4\u5e8f\u5217\u8fdb\u7a0b：\u7a0b\u5e8f\u52a8\u6001\u6267\u884c\u7684\u5b9e\u4f8b，\u5305\u62ec\u521b\u5efa\u3001\u8c03\u5ea6\u3001\u6267\u884c\u5230\u6d88\u4ea1\u7684\u5b8c\u6574\u751f\u547d\u5468\u671f\u5173\u952e\u533a\u522b：\u7a0b\u5e8f\u662f\u9759\u6001\u7684，\u8fdb\u7a0b\u662f\u52a8\u6001\u7684\u7a0b\u5e8f\u662f\u5b58\u50a8\u5728\u5b58\u50a8\u4ecb\u8d28\u4e0a\u7684\u6587\u4ef6，\u8fdb\u7a0b\u662f\u5185\u5b58\u4e2d\u7684\u6267\u884c\u5b9e\u4f53\u4e00\u4e2a\u7a0b\u5e8f\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\u8fdb\u7a0b，\u4e00\u4e2a\u8fdb\u7a0b\u53ea\u80fd\u5bf9\u5e94\u4e00\u4e2a\u7a0b\u5e8f1.2 \u8fdb\u7a0b\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u89d2\u8272\u8fdb\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u884c\u8d44\u6e90\u5206\u914d\u548c\u8c03\u5ea6\u7684\u57fa<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7926,7927,4598,58,1714],"topic":[],"class_list":["post-74852","post","type-post","status-publish","format-standard","hentry","category-server","tag-7926","tag-7927","tag-fork","tag-linux","tag-1714"],"yoast_head":"\n