/porc/$PID/io

引用 1 楼 do_fork 的回复:
 /porc/$PID/io


 没有这个文件……

引用 2 楼 hqin6 的回复:
引用 1 楼 do_fork 的回复:
/porc/$PID/io


没有这个文件……


你的内核版本是?

PHP code
root@sid:~# uname -aLinux sid2.6.31-1-686#1 SMP Sun Nov 15 20:39:33 UTC 2009 i686 GNU/Linux
root@sid:~# cat /proc/1/iorchar:16428807
wchar:8202326
syscr:27617
syscw:5263
read_bytes:32885248
write_bytes:3801088
cancelled_write_bytes:3670016

跟内核配置有关，CONFIG_TASK_IO_ACCOUNTING，


看内核源码 fs/proc/base.c 有没有下面这个函数了，
如果内核有，把TASK_IO_ACCOUNTING编译上就可以了，
如果内核没有，只能自己写个内核模块。

C/C++ code#ifdef CONFIG_TASK_IO_ACCOUNTINGstaticint do_io_accounting(struct task_struct*task,char*buffer,int whole)
{struct task_io_accounting acct= task->ioac;
        unsignedlong flags;if (whole&& lock_task_sighand(task,&flags)) {struct task_struct*t= task;

                task_io_accounting_add(&acct,&task->signal->ioac);
                while_each_thread(task, t)
                        task_io_accounting_add(&acct,&t->ioac);

                unlock_task_sighand(task,&flags);
        }return sprintf(buffer,"rchar: %llu\n""wchar: %llu\n""syscr: %llu\n""syscw: %llu\n""read_bytes: %llu\n""write_bytes: %llu\n""cancelled_write_bytes: %llu\n",
                        (unsignedlonglong)acct.rchar,
                        (unsignedlonglong)acct.wchar,
                        (unsignedlonglong)acct.syscr,
                        (unsignedlonglong)acct.syscw,
                        (unsignedlonglong)acct.read_bytes,
                        (unsignedlonglong)acct.write_bytes,
                        (unsignedlonglong)acct.cancelled_write_bytes);
}
...............