向外部共享文件的主机做IO读写，能造成网络流量吗？

zenglei · 发表于 2010-7-21 11:18:31

使用网络映射磁盘访问外部共享，请问能造成网络流量吗？
//####################################################################
//                                                                #
//随机读取10m,20mk,30m,40m,50mk，把之写入1亿个文件中的随机一个文件    #
//                                                                #
//####################################################################

Action()
{

const int waittime = 1;
char string[100];
char dest_filename[100];
char source_filename[100];
long dest_stream,source_stream;
int count;
char *buffer;
char *directory="z:\\"; //是我映射的外部共享，到本地的Z盘。要向里面写入数据。
char *directory1="d:\\R710\\data\\10m50m\\"; //是本地磁盘，里面是读的源数据
int n=1;
int m=1;
//int f;
int y,w,z;//后缀
//int w;
int c;
int filename,filename1;
lr_message("begin");
srand(time(NULL));
while(n!=0)
{
y=rand()%5;
      w=rand()%201;
      filename=(rand()%899) +100;
      filename1=rand()%5;
      z=rand()%12;
      sprintf(dest_filename,"%s%d\\0\\000\\%d\\%d", directory,y,w,filename);
      sprintf(dest_filename,"%s%s%d",dest_filename,".",z);
      sprintf(source_filename,"%s%d", directory1,filename1)；
      lr_output_message(source_filename);
      lr_output_message(dest_filename);
      if(access(source_filename,0)==0) //file exist
{
source_stream = fopen(source_filename,"rb");
         if(!source_stream)
         lr_output_message("unable to open source");
         dest_stream = fopen(dest_filename,"wb");
         if(dest_stream && source_stream)
      {
      if((buffer = (char *)malloc(buffer_size * sizeof(char))) == NULL) {
      lr_output_message("Insufficient memory available");
            return -1;
      }c=0;
      while (!feof(source_stream))
               {
      count = fread(buffer, sizeof(char), iosize, source_stream);
                  c=c+count;
                  fwrite(buffer,count,1,dest_stream);
                  lr_output_message("%3d bytes write", c);
               }

               free(buffer);
   fclose(dest_stream);
               fclose(source_stream);


         }
else {
      sprintf(string,"can't open dest: %s",dest_filename);
            lr_output_message(string);
}
}
else
{
sprintf(string,"file %s does not exist",source_filename);
         lr_output_message(string);

}
n--;
}

//lr_think_time(waittime);


return 0;
}

读写也正常，Z盘被找到的那个文件被覆盖，也有写的统计，结果：

Starting action vuser_init.
Ending action vuser_init.
Running Vuser...
Starting iteration 1.
Starting action Action.
begin
Action.c(43): d:\R710\data\10m50m\3
Action.c(44): z:\0\0\000\15\318.0
Action.c(64): 32768 bytes write
Action.c(64): 65536 bytes write
Action.c(64): 98304 bytes write
……
我再观察网络流量，发现带宽没有上去，不知这种方式对外部共享主机的IO造成流量不？这方法可不可行？
请大虾们指点。

[ 本帖最后由 zenglei 于 2010-7-22 11:45 编辑 ]