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nginx启用gzip压缩，大大降低网站流量 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...p_config1、建立一个 gzip conf ，配置内容如下： gzip_buffers 4 16k: 压缩时的缓存区大小, 可以理解为工作车间的大小 gzip_static on: 对静态文件进行gzip压缩, 是用来配合gzip 1、建立一个 gzip.conf ，配置内容如下：
#gzip_buffers 4 16k: 压缩...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注C++内核技术
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注C++内核技术
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注C++内核技术
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
Linux bpftrace学习笔记（持续更新） - 操作系统(内核) - 清泛网 - 专注C++内核技术
...("Tracing open syscalls... Hit Ctrl-C to end.\n");
printf("%-6s %-16s %4s %3s %s\n", "PID", "COMM", "FD", "ERR", "PATH");
}
tracepoint:syscalls:sys_enter_open,
tracepoint:syscalls:sys_enter_openat
{
@filename[tid] = args->filename;
}
tracepoint:syscalls:sys_exit_open,
tr...
优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
.../ 辅随机
$r = substr($m . $n, 0, 16);
} while(strlen($r) != 16);
$r = strtoupper($r);
$r = str_split($r, 4);
$r = implode('-', $r);
return $r;
}复制代码
这样做冲突率能有多高...