{"id":31802,"date":"2024-11-27T12:01:24","date_gmt":"2024-11-27T04:01:24","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=23278"},"modified":"2024-11-27T12:01:24","modified_gmt":"2024-11-27T04:01:24","slug":"ebpf%e5%8e%9f%e7%90%86%e4%b8%8e%e5%ba%94%e7%94%a8%ef%bc%9a%e4%bc%98%e5%8c%96%e7%b3%bb%e7%bb%9f%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/31802.html","title":{"rendered":"eBPF\u539f\u7406\u4e0e\u5e94\u7528\uff1a\u4f18\u5316\u7cfb\u7edf\u5185\u5b58\u7ba1\u7406"},"content":{"rendered":"

\t\t\t\teBPF<\/a>\uff08Extended Berkeley Packet Filter\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5185\u6838\u6280\u672f\uff0c\u6700\u521d\u7528\u4e8e\u7f51\u7edc\u5305\u8fc7\u6ee4\uff0c\u4f46\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0c\u5176\u5e94\u7528\u8303\u56f4\u5df2\u6269\u5c55\u5230\u7cfb\u7edf\u76d1\u63a7\u3001\u6027\u80fd\u5206\u6790\u548c\u5b89\u5168\u7b49\u9886\u57df\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8eBPF<\/a>\u7684\u539f\u7406\u53ca\u5176\u5728\u4f18\u5316\u7cfb\u7edf\u5185\u5b58\u7ba1\u7406\u65b9\u9762\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n\n

eBPF\u7684\u57fa\u672c\u539f\u7406<\/h3>\n\n\n\n\n

1. eBPF\u7684\u5386\u53f2\u4e0e\u53d1\u5c55<\/h4>\n\n\n\n\n

eBPF\u7684\u524d\u8eab\u662fBPF\uff08Berkeley Packet Filter\uff09\uff0c\u7531\u52b3\u4f26\u65af\u4f2f\u514b\u5229\u56fd\u5bb6\u5b9e\u9a8c\u5ba4\u5f00\u53d1\uff0c\u4e3b\u8981\u7528\u4e8e\u7f51\u7edc\u5305\u8fc7\u6ee4\u30022014\u5e74\uff0cLinux\u5185\u6838\u5f15\u5165\u4e86eBPF\uff0c\u6269\u5c55\u4e86BPF\u7684\u529f\u80fd\uff0c\u4f7f\u5176\u80fd\u591f\u5904\u7406\u66f4\u590d\u6742\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n\n\n\n\n\n

<\/p>\n\n\n\n\n\n\n\n\n\n

2. eBPF\u7684\u6838\u5fc3\u7ec4\u4ef6<\/h4>\n\n\n\n\n

eBPF\u4e3b\u8981\u7531\u4ee5\u4e0b\u51e0\u4e2a\u6838\u5fc3\u7ec4\u4ef6\u6784\u6210\uff1a<\/p>\n\n\n\n\n

    \n\n\n
  • eBPF\u7a0b\u5e8f<\/strong>\uff1a\u8fd0\u884c\u5728\u5185\u6838\u4e2d\u7684\u5c0f\u578b\u7a0b\u5e8f\uff0c\u7528\u4e8e\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\u3002<\/li>\n\n\n\n\n
  • eBPF maps<\/strong>\uff1a\u7528\u4e8e\u5b58\u50a8\u548c\u4f20\u9012\u6570\u636e\u7684\u952e\u503c\u5bf9\u6570\u636e\u7ed3\u6784\u3002<\/li>\n\n\n\n\n
  • eBPF\u94a9\u5b50\uff08Hooks\uff09<\/strong>\uff1a\u5185\u6838\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u6302\u8f7d\u5728\u8fd9\u4e9b\u4f4d\u7f6e\u6267\u884c\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

    3. eBPF\u7a0b\u5e8f\u7684\u6267\u884c\u6d41\u7a0b<\/h4>\n\n\n\n\n

    eBPF\u7a0b\u5e8f\u7684\u6267\u884c\u6d41\u7a0b\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n\n\n\n\n

      \n\n\n
    1. \u7f16\u5199eBPF\u7a0b\u5e8f<\/strong>\uff1a\u4f7f\u7528C\u8bed\u8a00\u6216\u5176\u4ed6\u9ad8\u7ea7\u8bed\u8a00\u7f16\u5199\u3002<\/li>\n\n\n\n\n
    2. \u7f16\u8bd1<\/strong>\uff1a\u5c06\u9ad8\u7ea7\u8bed\u8a00\u7f16\u5199\u7684\u7a0b\u5e8f\u7f16\u8bd1\u6210eBPF\u5b57\u8282\u7801\u3002<\/li>\n\n\n\n\n
    3. \u52a0\u8f7d<\/strong>\uff1a\u901a\u8fc7\u7528\u6237\u7a7a\u95f4\u5de5\u5177\uff08\u5982bpftrace\u3001bcc\u7b49\uff09\u5c06eBPF\u5b57\u8282\u7801\u52a0\u8f7d\u5230\u5185\u6838\u3002<\/li>\n\n\n\n\n
    4. \u9a8c\u8bc1<\/strong>\uff1a\u5185\u6838\u5bf9eBPF\u7a0b\u5e8f\u8fdb\u884c\u5b89\u5168\u6027\u9a8c\u8bc1\uff0c\u786e\u4fdd\u5176\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7a33\u5b9a\u6027\u9020\u6210\u5f71\u54cd\u3002<\/li>\n\n\n\n\n
    5. \u6267\u884c<\/strong>\uff1a\u901a\u8fc7eBPF\u94a9\u5b50\u6302\u8f7d\u5230\u5185\u6838\u7684\u7279\u5b9a\u4f4d\u7f6e\uff0c\u5f53\u89e6\u53d1\u6761\u4ef6\u6ee1\u8db3\u65f6\u6267\u884c\u3002<\/li>\n\n\n<\/ol>\n\n\n\n\n

      eBPF\u5728\u5185\u5b58\u7ba1\u7406\u4e2d\u7684\u5e94\u7528<\/h3>\n\n\n\n\n

      1. \u5185\u5b58\u7ba1\u7406\u7684\u6311\u6218<\/h4>\n\n\n\n\n

      \u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u9762\u4e34\u7684\u5185\u5b58\u7ba1\u7406\u6311\u6218\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

        \n\n\n
      • \u5185\u5b58\u6cc4\u6f0f<\/strong>\uff1a\u7a0b\u5e8f\u672a\u91ca\u653e\u5df2\u5206\u914d\u7684\u5185\u5b58\uff0c\u5bfc\u81f4\u5185\u5b58\u9010\u6e10\u8017\u5c3d\u3002<\/li>\n\n\n\n\n
      • \u5185\u5b58\u788e\u7247\u5316<\/strong>\uff1a\u9891\u7e41\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u5bfc\u81f4\u5185\u5b58\u788e\u7247\u5316\uff0c\u5f71\u54cd\u6027\u80fd\u3002<\/li>\n\n\n\n\n
      • \u5185\u5b58\u5206\u914d\u6548\u7387<\/strong>\uff1a\u5185\u5b58\u5206\u914d\u7b97\u6cd5\u7684\u6548\u7387\u76f4\u63a5\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

        2. eBPF\u5728\u5185\u5b58\u76d1\u63a7\u4e2d\u7684\u5e94\u7528<\/h4>\n\n\n\n\n

        eBPF\u53ef\u4ee5\u7528\u4e8e\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u548c\u7ba1\u7406\u5458\u53ca\u65f6\u53d1\u73b0\u548c\u89e3\u51b3\u5185\u5b58\u95ee\u9898\u3002<\/p>\n\n\n\n\n

        a. \u76d1\u63a7\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e<\/h5>\n\n\n\n\n

        \u901a\u8fc7\u6302\u8f7deBPF\u7a0b\u5e8f\u5230\u5185\u6838\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u51fd\u6570\uff08\u5982kmalloc<\/code>\u3001kfree<\/code>\uff09\uff0c\u53ef\u4ee5\u5b9e\u65f6\u8ddf\u8e2a\u5185\u5b58\u7684\u5206\u914d\u548c\u91ca\u653e\u60c5\u51b5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684eBPF\u7a0b\u5e8f\u793a\u4f8b\uff0c\u7528\u4e8e\u76d1\u63a7kmalloc<\/code>\u8c03\u7528\uff1a<\/p>\n\n\n\n\n

        #include <uapi\/linux\/ptrace.h>
        \n#include <linux\/sched.h>
        \n
        \nBPF_HASH(start, u32, u64);
        \n
        \nint kprobe__kmalloc(struct pt_regs *ctx, size_t size, gfp_t flags) {
        \n    u32 pid = bpf_get_current_pid_tgid() >> 32;
        \n    u64 ts = bpf_ktime_get_ns();
        \n    start.update(&pid, &ts);
        \n    return 0;
        \n}
        \n
        \nint kretprobe__kmalloc(struct pt_regs *ctx) {
        \n    u32 pid = bpf_get_current_pid_tgid() >> 32;
        \n    u64 *tsp = start.lookup(&pid);
        \n    if (tsp) {
        \n        u64 delta = bpf_ktime_get_ns() - *tsp;
        \n        bpf_trace_printk("kmalloc duration: %llu ns\\\\n", delta);
        \n        start.delete(&pid);
        \n    }
        \n    return 0;
        \n}
        \n<\/code><\/pre>\n\n\n\n\n
        b. \u68c0\u6d4b\u5185\u5b58\u6cc4\u6f0f<\/h5>\n\n\n\n\n
        \u901a\u8fc7\u8ddf\u8e2a\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u7684\u9891\u7387\u548c\u6a21\u5f0f\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u68c0\u6d4b\u6f5c\u5728\u7684\u5185\u5b58\u6cc4\u6f0f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u4e2a\u8fdb\u7a0b\u9891\u7e41\u5206\u914d\u5185\u5b58\u4f46\u5f88\u5c11\u91ca\u653e\uff0c\u53ef\u80fd\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\u3002<\/p>\n\n\n\n\n
        3. eBPF\u5728\u5185\u5b58\u4f18\u5316\u4e2d\u7684\u5e94\u7528<\/h4>\n\n\n\n\n
        \u9664\u4e86\u76d1\u63a7\uff0ceBPF\u8fd8\u53ef\u4ee5\u7528\u4e8e\u4f18\u5316\u5185\u5b58\u7ba1\u7406\u3002<\/p>\n\n\n\n\n
        a. \u4f18\u5316\u5185\u5b58\u5206\u914d\u7b56\u7565<\/h5>\n\n\n\n\n
        \u901a\u8fc7\u5206\u6790\u5185\u5b58\u5206\u914d\u7684\u7edf\u8ba1\u6570\u636e\uff0ceBPF\u7a0b\u5e8f\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u5185\u5b58\u5206\u914d\u7b56\u7565\uff0c\u4ee5\u63d0\u9ad8\u5185\u5b58\u5229\u7528\u7387\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u8fdb\u7a0b\u7684\u5185\u5b58\u4f7f\u7528\u6a21\u5f0f\uff0c\u8c03\u6574\u5176\u5185\u5b58\u5206\u914d\u7684\u4f18\u5148\u7ea7\u3002<\/p>\n\n\n\n\n
        b. \u51cf\u5c11\u5185\u5b58\u788e\u7247\u5316<\/h5>\n\n\n\n\n
        \u5185\u5b58\u788e\u7247\u5316\u662f\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u7684\u91cd\u8981\u56e0\u7d20\u3002eBPF\u7a0b\u5e8f\u53ef\u4ee5\u901a\u8fc7\u8ddf\u8e2a\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u7684\u5206\u5e03\u60c5\u51b5\uff0c\u8bc6\u522b\u51fa\u5bb9\u6613\u4ea7\u751f\u788e\u7247\u7684\u5185\u5b58\u533a\u57df\uff0c\u5e76\u91c7\u53d6\u63aa\u65bd\u51cf\u5c11\u788e\u7247\u5316\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u5185\u5b58\u5206\u914d\u7684\u7c92\u5ea6\uff0c\u51cf\u5c11\u5c0f\u5185\u5b58\u5757\u7684\u9891\u7e41\u5206\u914d\u548c\u91ca\u653e\u3002<\/p>\n\n\n\n\n
        c. \u63d0\u9ad8\u5185\u5b58\u56de\u6536\u6548\u7387<\/h5>\n\n\n\n\n
        eBPF\u7a0b\u5e8f\u53ef\u4ee5\u76d1\u63a7\u5185\u5b58\u56de\u6536\u8fc7\u7a0b\uff0c\u8bc6\u522b\u51fa\u56de\u6536\u6548\u7387\u4f4e\u4e0b\u7684\u60c5\u51b5\uff0c\u5e76\u4f18\u5316\u56de\u6536\u7b97\u6cd5\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u5206\u6790\u5185\u5b58\u56de\u6536\u7684\u8017\u65f6\u548c\u6548\u679c\uff0c\u8c03\u6574\u56de\u6536\u7b56\u7565\uff0c\u63d0\u9ad8\u56de\u6536\u6548\u7387\u3002<\/p>\n\n\n\n\n
        \u5b9e\u9645\u6848\u4f8b\u5206\u6790<\/h3>\n\n\n\n\n
        1. \u4f7f\u7528eBPF\u4f18\u5316\u6570\u636e\u5e93\u6027\u80fd<\/h4>\n\n\n\n\n
        \u67d0\u5927\u578b\u6570\u636e\u5e93\u7cfb\u7edf\u9762\u4e34\u5185\u5b58\u788e\u7247\u5316\u95ee\u9898\uff0c\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u901a\u8fc7\u90e8\u7f72eBPF\u7a0b\u5e8f\uff0c\u5b9e\u65f6\u76d1\u63a7\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u60c5\u51b5\uff0c\u8bc6\u522b\u51fa\u9ad8\u9891\u5c0f\u5185\u5b58\u5757\u5206\u914d\u7684\u74f6\u9888\u3002\u6839\u636eeBPF\u6536\u96c6\u7684\u6570\u636e\uff0c\u8c03\u6574\u5185\u5b58\u5206\u914d\u7b56\u7565\uff0c\u51cf\u5c11\u5c0f\u5185\u5b58\u5757\u7684\u5206\u914d\u9891\u7387\uff0c\u663e\u8457\u964d\u4f4e\u4e86\u5185\u5b58\u788e\u7247\u5316\uff0c\u63d0\u5347\u4e86\u6570\u636e\u5e93\u6027\u80fd\u3002<\/p>\n\n\n\n\n
        2. \u4f7f\u7528eBPF\u68c0\u6d4b\u548c\u4fee\u590d\u5185\u5b58\u6cc4\u6f0f<\/h4>\n\n\n\n\n
        \u67d0\u5728\u7ebf\u670d\u52a1\u9891\u7e41\u51fa\u73b0\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\uff0c\u5bfc\u81f4\u670d\u52a1\u4e0d\u7a33\u5b9a\u3002\u901a\u8fc7\u90e8\u7f72eBPF\u7a0b\u5e8f\uff0c\u8ddf\u8e2a\u5404\u8fdb\u7a0b\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u60c5\u51b5\uff0c\u53d1\u73b0\u67d0\u6a21\u5757\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002\u6839\u636eeBPF\u63d0\u4f9b\u7684\u8be6\u7ec6\u6570\u636e\uff0c\u5f00\u53d1\u56e2\u961f\u8fc5\u901f\u5b9a\u4f4d\u5e76\u4fee\u590d\u4e86\u95ee\u9898\uff0c\u4fdd\u969c\u4e86\u670d\u52a1\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n\n
        eBPF\u5de5\u5177\u548c\u6846\u67b6<\/h3>\n\n\n\n\n
        1. bcc\uff08BPF Compiler Collection\uff09<\/h4>\n\n\n\n\n
        bcc\u662f\u4e00\u4e2a\u5f00\u6e90\u7684eBPF\u5de5\u5177\u96c6\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5e93\u548c\u5de5\u5177\uff0c\u7b80\u5316\u4e86eBPF\u7a0b\u5e8f\u7684\u7f16\u5199\u548c\u90e8\u7f72\u3002bcc\u652f\u6301\u591a\u79cd\u8bed\u8a00\u7f16\u5199eBPF\u7a0b\u5e8f\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u793a\u4f8b\u548c\u6587\u6863\u3002<\/p>\n\n\n\n\n
        2. bpftrace<\/h4>\n\n\n\n\n
        bpftrace\u662f\u4e00\u4e2a\u9ad8\u6548\u7684eBPF\u8ddf\u8e2a\u5de5\u5177\uff0c\u7c7b\u4f3c\u4e8eawk\u3001sed\u7b49\u6587\u672c\u5904\u7406\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5feb\u901f\u7f16\u5199\u548c\u6267\u884ceBPF\u8ddf\u8e2a\u811a\u672c\u3002bpftrace\u8bed\u6cd5\u7b80\u6d01\uff0c\u6613\u4e8e\u4e0a\u624b\uff0c\u9002\u5408\u5feb\u901f\u8bca\u65ad\u7cfb\u7edf\u95ee\u9898\u3002<\/p>\n\n\n\n\n
        3. Falco<\/h4>\n\n\n\n\n
        Falco\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5bb9\u5668\u5b89\u5168\u76d1\u63a7\u5de5\u5177\uff0c\u57fa\u4e8eeBPF\u6280\u672f\uff0c\u80fd\u591f\u5b9e\u65f6\u76d1\u63a7\u5bb9\u5668\u548c\u4e3b\u673a\u7684\u7cfb\u7edf\u8c03\u7528\uff0c\u68c0\u6d4b\u5f02\u5e38\u884c\u4e3a\u3002Falco\u5e7f\u6cdb\u5e94\u7528\u4e8eKubernetes\u7b49\u5bb9\u5668\u5316\u73af\u5883\u4e2d\uff0c\u63d0\u5347\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u53ef\u89c2\u6d4b\u6027\u3002<\/p>\n\n\n\n\n
        \u672a\u6765\u5c55\u671b<\/h3>\n\n\n\n\n
        \u968f\u7740eBPF\u6280\u672f\u7684\u4e0d\u65ad\u53d1\u5c55\u548c\u6210\u719f\uff0c\u5176\u5728\u5185\u5b58\u7ba1\u7406\u9886\u57df\u7684\u5e94\u7528\u524d\u666f\u5e7f\u9614\u3002\u672a\u6765\uff0ceBPF\u6709\u671b\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u53d1\u6325\u66f4\u5927\u4f5c\u7528\uff1a<\/p>\n\n\n\n\n
          \n\n\n
        • \u667a\u80fd\u5316\u5185\u5b58\u7ba1\u7406<\/strong>\uff1a\u7ed3\u5408\u673a\u5668\u5b66\u4e60\u548c\u5927\u6570\u636e\u6280\u672f\uff0ceBPF\u53ef\u4ee5\u5b9e\u73b0\u66f4\u667a\u80fd\u7684\u5185\u5b58\u7ba1\u7406\u7b56\u7565\uff0c\u81ea\u52a8\u4f18\u5316\u5185\u5b58\u5206\u914d\u548c\u56de\u6536\u3002<\/li>\n\n\n\n\n
        • \u8de8\u5e73\u53f0\u652f\u6301<\/strong>\uff1a\u76ee\u524deBPF\u4e3b\u8981\u5e94\u7528\u4e8eLinux\u5185\u6838\uff0c\u672a\u6765\u6709\u671b\u6269\u5c55\u5230\u5176\u4ed6\u64cd\u4f5c\u7cfb\u7edf\u5e73\u53f0\uff0c\u5b9e\u73b0\u8de8\u5e73\u53f0\u7684\u5185\u5b58\u7ba1\u7406\u4f18\u5316\u3002<\/li>\n\n\n\n\n
        • \u5b89\u5168\u6027\u589e\u5f3a<\/strong>\uff1a\u901a\u8fc7eBPF\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u7cbe\u7ec6\u5730\u76d1\u63a7\u548c\u63a7\u5236\u7cfb\u7edf\u5185\u5b58\u7684\u4f7f\u7528\uff0c\u63d0\u5347\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n
          \u603b\u7ed3<\/h3>\n\n\n\n\n
          eBPF\u4f5c\u4e3a\u4e00\u79cd\u5f3a\u5927\u7684\u5185\u6838\u6280\u672f\uff0c\u4e0d\u4ec5\u5728\u7f51\u7edc\u5305\u8fc7\u6ee4\u9886\u57df\u8868\u73b0\u51fa\u8272\uff0c\u5728\u7cfb\u7edf\u5185\u5b58\u7ba1\u7406\u65b9\u9762\u4e5f\u5c55\u73b0\u51fa\u5de8\u5927\u7684\u6f5c\u529b\u3002\u901a\u8fc7\u5b9e\u65f6\u76d1\u63a7\u3001\u667a\u80fd\u4f18\u5316\u548c\u9ad8\u6548\u68c0\u6d4b\uff0ceBPF\u80fd\u591f\u663e\u8457\u63d0\u5347\u7cfb\u7edf\u7684\u5185\u5b58\u7ba1\u7406\u6548\u7387\uff0c\u4fdd\u969c\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002\u968f\u7740\u6280\u672f\u7684\u4e0d\u65ad\u8fdb\u6b65\uff0ceBPF\u5728\u5185\u5b58\u7ba1\u7406\u9886\u57df\u7684\u5e94\u7528\u5c06\u66f4\u52a0\u5e7f\u6cdb\u548c\u6df1\u5165\uff0c\u4e3a\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u7684\u9ad8\u6548\u8fd0\u884c\u63d0\u4f9b\u6709\u529b\u652f\u6301\u3002<\/p>\n\n\n]]>\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"
          \t\t\t\t\t\t<\/p>\n","protected":false},"author":5,"featured_media":23279,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-31802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-discussion"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/31802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=31802"}],"version-history":[{"count":0,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/31802\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/23279"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=31802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=31802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=31802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}