今天中午闲来无事花了5分钟时间看了遍webbench网络压力测试的源代码，索性将其汉化，英语水平有限，敬请批评指正。

1、适用系统：Linux

2、编译安装：

tar zxvf webbench-1.5.tar.gz
cd webbench-1.5
make && make install

3、使用：

webbench -c 500 -t 30 http://127.0.0.1/test.jpg
　　参数说明：-c表示并发数，-t表示时间(秒)

测试结果示例：

Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://127.0.0.1/test.jpg
500 clients, running 30 sec.

Speed=3230 pages/min, 11614212 bytes/sec.
Requests: 1615 susceed, 0 failed

汉化主要是对webbench.c文件的汉化

/*
 * (C) Radim Kolar 1997-2004
 * 这是一个免费的开源软件, 具体细节请查看GNU公开第2版
 * 的许可.
 *
 * 简单的万维网服务器测试基准程序:
 *
 * 使用方法:
 *   webbench --help
 *
 * 返回代码:
 *    0 - 正确
 *    1 - 服务器不在线
 *    2 - 错误的参数
 *    3 - 网络错误程序错误
 *
 */

#include "socket.c"
#include <unistd.h>
#include <sys/param.h>
#include <rpc/types.h>
#include <getopt.h>
#include <strings.h>
#include <time.h>
#include <signal.h>

/* 变量 */
volatile int timerexpired=0;
int speed=0;
int failed=0;
int bytes=0;
/* 全局变量 */
int http10=1; /* 0 - http/0.9, 1 - http/1.0, 2 - http/1.1 */
/* 定义: GET, HEAD, OPTIONS, TRACE的变量 */
#define METHOD_GET 0
#define METHOD_HEAD 1
#define METHOD_OPTIONS 2
#define METHOD_TRACE 3
#define PROGRAM_VERSION "1.5"
int method=METHOD_GET;
int clients=1;
int force=0;
int force_reload=0;
int proxyport=80;
char *proxyhost=NULL;
int benchtime=30;
/* 网络相关变量 */
int mypipe[2];
char host[MAXHOSTNAMELEN];
#define REQUEST_SIZE 2048
char request[REQUEST_SIZE];

static const struct option long_options[]=
{
 {"force",no_argument,&force,1},
 {"reload",no_argument,&force_reload,1},
 {"time",required_argument,NULL,'t'},
 {"help",no_argument,NULL,'?'},
 {"http09",no_argument,NULL,'9'},
 {"http10",no_argument,NULL,'1'},
 {"http11",no_argument,NULL,'2'},
 {"get",no_argument,&method,METHOD_GET},
 {"head",no_argument,&method,METHOD_HEAD},
 {"options",no_argument,&method,METHOD_OPTIONS},
 {"trace",no_argument,&method,METHOD_TRACE},
 {"version",no_argument,NULL,'V'},
 {"proxy",required_argument,NULL,'p'},
 {"clients",required_argument,NULL,'c'},
 {NULL,0,NULL,0}
};

static void benchcore(const char* host,const int port, const char *request);
static int bench(void);
static void build_request(const char *url);

static void alarm_handler(int signal)
{
   timerexpired=1;
} 

static void usage(void)
{
   fprintf(stderr,
 "webbench [option]... URL\n"
 "  -f|--force               不需要等待主机的回应强制执行.\n"
 "  -r|--reload              发送无缓存的重载请求.\n"
 "  -t|--time <sec>          使用本程序时间间隔默认是30秒.\n"
 "  -p|--proxy <server:port> 使用代理网关发送请求.\n"
 "  -c|--clients <n>         使用并发数.\n"
 "  -9|--http09              使用 HTTP/0.9 类型发送请求.\n"
 "  -1|--http10              使用 HTTP/1.0 协议.\n"
 "  -2|--http11              使用 HTTP/1.1 协议.\n"
 "  --get                    使用 GET 请求方式.\n"
 "  --head                   使用 HEAD 请求方式.\n"
 "  --options                使用 OPTIONS 请求方式.\n"
 "  --trace                  使用 TRACE 请求方式.\n"
 "  -?|-h|--help             帮助信息.\n"
 "  -V|--version             显示程序版本号.\n"
 );
};

int main(int argc, char *argv[])
{
 int opt=0;
 int options_index=0;
 char *tmp=NULL;

if(argc==1)
 {
   usage();
          return 2;
 }

while((opt=getopt_long(argc,argv,"912Vfrt:p:c:?h",long_options,&options_index))!=EOF )
 {
  switch(opt)
  {
   case  0 : break;
   case 'f': force=1;break;
   case 'r': force_reload=1;break;
   case '9': http10=0;break;
   case '1': http10=1;break;
   case '2': http10=2;break;
   case 'V': printf(PROGRAM_VERSION"\n");exit(0);
   case 't': benchtime=atoi(optarg);break;     
   case 'p':
      /* 网络解析端口 */
      tmp=strrchr(optarg,':');
      proxyhost=optarg;
      if(tmp==NULL)
      {
       break;
      }
      if(tmp==optarg)
      {
       fprintf(stderr,"Error in option --proxy %s: 主机错误无法找到主机.\n",optarg);
       return 2;
      }
      if(tmp==optarg+strlen(optarg)-1)
      {
       fprintf(stderr,"Error in option --proxy %s 端口错误无法打开端口.\n",optarg);
       return 2;
      }
      *tmp='\0';
      proxyport=atoi(tmp+1);break;
   case ':':
   case 'h':
   case '?': usage();return 2;break;
   case 'c': clients=atoi(optarg);break;
  }
 }
 
 if(optind==argc) {
                      fprintf(stderr,"webbench: 连接地址错误!\n");
        usage();
        return 2;
                    }

if(clients==0) clients=1;
 if(benchtime==0) benchtime=60;
 /* 版权 */
 fprintf(stderr,"Webbench - 简单的万维网服务器测试基准程序 "PROGRAM_VERSION"\n"
  "Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.\n"
  );
 build_request(argv[optind]);
 /* 打印返回值 */
 printf("\nBenchmarking: ");
 switch(method)
 {
  case METHOD_GET:
  default:
   printf("GET");break;
  case METHOD_OPTIONS:
   printf("OPTIONS");break;
  case METHOD_HEAD:
   printf("HEAD");break;
  case METHOD_TRACE:
   printf("TRACE");break;
 }
 printf(" %s",argv[optind]);
 switch(http10)
 {
  case 0: printf(" (使用 HTTP/0.9)");break;
  case 2: printf(" (使用 HTTP/1.1)");break;
 }
 printf("\n");
 if(clients==1) printf("1 client");
 else
   printf("%d clients",clients);

printf(", running %d sec", benchtime);
 if(force) printf(", early socket close");
 if(proxyhost!=NULL) printf(", via 代理服务器 %s:%d",proxyhost,proxyport);
 if(force_reload) printf(", forcing reload");
 printf(".\n");
 return bench();
}

void build_request(const char *url)
{
  char tmp[10];
  int i;

bzero(host,MAXHOSTNAMELEN);
  bzero(request,REQUEST_SIZE);

if(force_reload && proxyhost!=NULL && http10<1) http10=1;
  if(method==METHOD_HEAD && http10<1) http10=1;
  if(method==METHOD_OPTIONS && http10<2) http10=2;
  if(method==METHOD_TRACE && http10<2) http10=2;

switch(method)
  {
   default:
   case METHOD_GET: strcpy(request,"GET");break;
   case METHOD_HEAD: strcpy(request,"HEAD");break;
   case METHOD_OPTIONS: strcpy(request,"OPTIONS");break;
   case METHOD_TRACE: strcpy(request,"TRACE");break;
  }
   
  strcat(request," ");

if(NULL==strstr(url,"://"))
  {
   fprintf(stderr, "\n%s: is not a valid URL.\n",url);
   exit(2);
  }
  if(strlen(url)>1500)
  {
         fprintf(stderr,"URL is too long.\n");
  exit(2);
  }
  if(proxyhost==NULL)
    if (0!=strncasecmp("http://",url,7))
    { fprintf(stderr,"\n仅支持http协议, 请设置其他的网关.\n");
             exit(2);
           }
  /* 主机协议 */
  i=strstr(url,"://")-url+3;
  /* printf("%d\n",i); */

if(strchr(url+i,'/')==NULL) {
                                fprintf(stderr,"\n无效的Url语法 - 主机名结束没有加 '/'.\n");
                                exit(2);
                              }
  if(proxyhost==NULL)
  {
   /* 获得主机端口 */
   if(index(url+i,':')!=NULL &&
      index(url+i,':')<index(url+i,'/'))
   {
    strncpy(host,url+i,strchr(url+i,':')-url-i);
    bzero(tmp,10);
    strncpy(tmp,index(url+i,':')+1,strchr(url+i,'/')-index(url+i,':')-1);
    /* printf("tmp=%s\n",tmp); */
    proxyport=atoi(tmp);
    if(proxyport==0) proxyport=80;
   } else
   {
     strncpy(host,url+i,strcspn(url+i,"/"));
   }
   // printf("Host=%s\n",host);
   strcat(request+strlen(request),url+i+strcspn(url+i,"/"));
  } else
  {
   // printf("ProxyHost=%s\nProxyPort=%d\n",proxyhost,proxyport);
   strcat(request,url);
  }
  if(http10==1)
   strcat(request," HTTP/1.0");
  else if (http10==2)
   strcat(request," HTTP/1.1");
  strcat(request,"\r\n");
  if(http10>0)
   strcat(request,"User-Agent: WebBench "PROGRAM_VERSION"\r\n");
  if(proxyhost==NULL && http10>0)
  {
   strcat(request,"Host: ");
   strcat(request,host);
   strcat(request,"\r\n");
  }
  if(force_reload && proxyhost!=NULL)
  {
   strcat(request,"Pragma: no-cache\r\n");
  }
  if(http10>1)
   strcat(request,"Connection: close\r\n");
  /* 最后一行添加回车 */
  if(http10>0) strcat(request,"\r\n");
  // printf("Req=%s\n",request);
}

/* 程序资源错误处理 */
static int bench(void)
{
  int i,j,k; 
  pid_t pid=0;
  FILE *f;

/* 创建一个目标服务器的套接字 */
  i=Socket(proxyhost==NULL?host:proxyhost,proxyport);
  if(i<0) {
    fprintf(stderr,"\nConnect to server failed. Aborting benchmark.\n");
           return 1;
         }
  close(i);
  /* 创建一个管道 */
  if(pipe(mypipe))
  {
   perror("pipe failed.");
   return 3;
  }

/* not needed, since we have alarm() in childrens */
  /* wait 4 next system clock tick */
  /*
  cas=time(NULL);
  while(time(NULL)==cas)
        sched_yield();
  */

/* 创建子进程 */
  for(i=0;i<clients;i++)
  {
    pid=fork();
    if(pid <= (pid_t) 0)
    {
     /* 子进程如果出现错误将退出*/
            sleep(1); /* 将进程进入休眠状态 */
     break;
    }
  }

if( pid< (pid_t) 0)
  {
          fprintf(stderr,"problems forking worker no. %d\n",i);
   perror("fork failed.");
   return 3;
  }

if(pid== (pid_t) 0)
  {
    /* 创建子进程成功 */
    if(proxyhost==NULL)
      benchcore(host,proxyport,request);
         else
      benchcore(proxyhost,proxyport,request);

/* 向管道中写入内容 */
  f=fdopen(mypipe[1],"w");
  if(f==NULL)
  {
   perror("open pipe for writing failed.");
   return 3;
  }
  /* fprintf(stderr,"Child - %d %d\n",speed,failed); */
  fprintf(f,"%d %d %d\n",speed,failed,bytes);
  fclose(f);
  return 0;
  } else
  {
   f=fdopen(mypipe[0],"r");
   if(f==NULL)
   {
    perror("打开读管道失败.");
    return 3;
   }
   setvbuf(f,NULL,_IONBF,0);
   speed=0;
          failed=0;
          bytes=0;

while(1)
   {
    pid=fscanf(f,"%d %d %d",&i,&j,&k);
    if(pid<2)
                  {
                       fprintf(stderr,"子进程死亡.\n");
                       break;
                  }
    speed+=i;
    failed+=j;
    bytes+=k;
    /* fprintf(stderr,"*Knock* %d %d read=%d\n",speed,failed,pid); */
    if(--clients==0) break;
   }
   fclose(f);

printf("\nSpeed=%d pages/min, %d bytes/sec.\nRequests: %d susceed, %d failed.\n",
    (int)((speed+failed)/(benchtime/60.0f)),
    (int)(bytes/(float)benchtime),
    speed,
    failed);
  }
  return i;
}

void benchcore(const char *host,const int port,const char *req)
{
 int rlen;
 char buf[1500];
 int s,i;
 struct sigaction sa;

/* 设置警告处理机制 */
 sa.sa_handler=alarm_handler;
 sa.sa_flags=0;
 if(sigaction(SIGALRM,&sa,NULL))
    exit(3);
 alarm(benchtime);

rlen=strlen(req);
 nexttry:while(1)
 {
    if(timerexpired)
    {
       if(failed>0)
       {
          /* fprintf(stderr,"信号量错误\n"); */
          failed--;
       }
       return;
    }
    s=Socket(host,port);                         
    if(s<0) { failed++;continue;}
    if(rlen!=write(s,req,rlen)) {failed++;close(s);continue;}
    if(http10==0)
     if(shutdown(s,1)) { failed++;close(s);continue;}
    if(force==0)
    {
            /* 得到返回的套接字数据 */
     while(1)
     {
              if(timerexpired) break;
       i=read(s,buf,1500);
              /* fprintf(stderr,"%d\n",i); */
       if(i<0)
              {
                 failed++;
                 close(s);
                 goto nexttry;
              }
        else
         if(i==0) break;
         else
          bytes+=i;
     }
    }
    if(close(s)) {failed++;continue;}
    speed++;
 }
}