随想录（webbench压力测试代码）
2015-01-24 15:09
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关于压力测试，网上有很多的代码。但是，我个人还是觉得这份webbench代码写得比较好，大概也可能是因为我自己比较偏好小而精的代码吧。压力测试一般是指让server承受一定的负载，进而可以验证server的cpu使用率、io速度、mem和swap大小、响应速度、服务器程序稳定性、并发性能等等。
原来webbench是由webbench.c和socket.c两个文件组成，这里为了阅读的方便，我自己将两份代码合在了一起，其实是一样的。
补充：
redis的benchmark也不错，特意粘贴在下面。
关于压力测试，网上有很多的代码。但是，我个人还是觉得这份webbench代码写得比较好，大概也可能是因为我自己比较偏好小而精的代码吧。压力测试一般是指让server承受一定的负载，进而可以验证server的cpu使用率、io速度、mem和swap大小、响应速度、服务器程序稳定性、并发性能等等。
原来webbench是由webbench.c和socket.c两个文件组成，这里为了阅读的方便，我自己将两份代码合在了一起，其实是一样的。
/*
* (C) Radim Kolar 1997-2004
* This is free software, see GNU Public License version 2 for
* details.
*
* Simple forking WWW Server benchmark:
*
* Usage:
* webbench --help
*
* Return codes:
* 0 - sucess
* 1 - benchmark failed (server is not on-line)
* 2 - bad param
* 3 - internal error, fork failed
*
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/time.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
int Socket(const char *host, int clientPort)
{
int sock;
unsigned long inaddr;
struct sockaddr_in ad;
struct hostent *hp;
memset(&ad, 0, sizeof(ad));
ad.sin_family = AF_INET;
inaddr = inet_addr(host);
if (inaddr != INADDR_NONE)
memcpy(&ad.sin_addr, &inaddr, sizeof(inaddr));
else
{
hp = gethostbyname(host);
if (hp == NULL)
return -1;
memcpy(&ad.sin_addr, hp->h_addr, hp->h_length);
}
ad.sin_port = htons(clientPort);
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
return sock;
if (connect(sock, (struct sockaddr *)&ad, sizeof(ad)) < 0)
return -1;
return sock;
}
#include <unistd.h>
#include <sys/param.h>
#include <rpc/types.h>
#include <getopt.h>
#include <strings.h>
#include <time.h>
#include <signal.h>
/* values */
volatile int timerexpired=0;
int speed=0;
int failed=0;
int bytes=0;
/* globals */
int http10=1; /* 0 - http/0.9, 1 - http/1.0, 2 - http/1.1 */
/* Allow: GET, HEAD, OPTIONS, TRACE */
#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;
/* internal */
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}
};
/* prototypes */
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 Don't wait for reply from server.\n"
" -r|--reload Send reload request - Pragma: no-cache.\n"
" -t|--time <sec> Run benchmark for <sec> seconds. Default 30.\n"
" -p|--proxy <server:port> Use proxy server for request.\n"
" -c|--clients <n> Run <n> HTTP clients at once. Default one.\n"
" -9|--http09 Use HTTP/0.9 style requests.\n"
" -1|--http10 Use HTTP/1.0 protocol.\n"
" -2|--http11 Use HTTP/1.1 protocol.\n"
" --get Use GET request method.\n"
" --head Use HEAD request method.\n"
" --options Use OPTIONS request method.\n"
" --trace Use TRACE request method.\n"
" -?|-h|--help This information.\n"
" -V|--version Display program version.\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':
/* proxy server parsing server:port */
tmp=strrchr(optarg,':');
proxyhost=optarg;
if(tmp==NULL)
{
break;
}
if(tmp==optarg)
{
fprintf(stderr,"Error in option --proxy %s: Missing hostname.\n",optarg);
return 2;
}
if(tmp==optarg+strlen(optarg)-1)
{
fprintf(stderr,"Error in option --proxy %s Port number is missing.\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: Missing URL!\n");
usage();
return 2;
}
if(clients==0) clients=1;
if(benchtime==0) benchtime=60;
/* Copyright */
fprintf(stderr,"Webbench - Simple Web Benchmark "PROGRAM_VERSION"\n"
"Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.\n"
);
build_request(argv[optind]);
/* print bench info */
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(" (using HTTP/0.9)");break;
case 2: printf(" (using 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 proxy server %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,"\nOnly HTTP protocol is directly supported, set --proxy for others.\n");
exit(2);
}
/* protocol/host delimiter */
i=strstr(url,"://")-url+3;
/* printf("%d\n",i); */
if(strchr(url+i,'/')==NULL) {
fprintf(stderr,"\nInvalid URL syntax - hostname don't ends with '/'.\n");
exit(2);
}
if(proxyhost==NULL)
{
/* get port from hostname */
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");
/* add empty line at end */
if(http10>0) strcat(request,"\r\n");
// printf("Req=%s\n",request);
}
/* vraci system rc error kod */
static int bench(void)
{
int i,j,k;
pid_t pid=0;
FILE *f;
/* check avaibility of target server */
i=Socket(proxyhost==NULL?host:proxyhost,proxyport);
if(i<0) {
fprintf(stderr,"\nConnect to server failed. Aborting benchmark.\n");
return 1;
}
close(i);
/* create pipe */
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();
*/
/* fork childs */
for(i=0;i<clients;i++)
{
pid=fork();
if(pid <= (pid_t) 0)
{
/* child process or error*/
sleep(1); /* make childs faster */
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)
{
/* I am a child */
if(proxyhost==NULL)
benchcore(host,proxyport,request);
else
benchcore(proxyhost,proxyport,request);
/* write results to pipe */
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("open pipe for reading failed.");
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,"Some of our childrens died.\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;
/* setup alarm signal handler */
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,"Correcting failed by signal\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)
{
/* read all available data from socket */
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++;
}
} 补充：
redis的benchmark也不错，特意粘贴在下面。
/* Redis benchmark utility.
*
* Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "fmacros.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include <signal.h>
#include <assert.h>
#include "ae.h"
#include "hiredis.h"
#include "sds.h"
#include "adlist.h"
#include "zmalloc.h"
#define REDIS_NOTUSED(V) ((void) V)
#define RANDPTR_INITIAL_SIZE 8
static struct config {
aeEventLoop *el;
const char *hostip;
int hostport;
const char *hostsocket;
int numclients;
int liveclients;
int requests;
int requests_issued;
int requests_finished;
int keysize;
int datasize;
int randomkeys;
int randomkeys_keyspacelen;
int keepalive;
int pipeline;
long long start;
long long totlatency;
long long *latency;
const char *title;
list *clients;
int quiet;
int csv;
int loop;
int idlemode;
int dbnum;
sds dbnumstr;
char *tests;
char *auth;
} config;
typedef struct _client {
redisContext *context;
sds obuf;
char **randptr; /* Pointers to :rand: strings inside the command buf */
size_t randlen; /* Number of pointers in client->randptr */
size_t randfree; /* Number of unused pointers in client->randptr */
unsigned int written; /* Bytes of 'obuf' already written */
long long start; /* Start time of a request */
long long latency; /* Request latency */
int pending; /* Number of pending requests (replies to consume) */
int selectlen; /* If non-zero, a SELECT of 'selectlen' bytes is currently
used as a prefix of the pipline of commands. This gets
discarded the first time it's sent. */
} *client;
/* Prototypes */
static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
static void createMissingClients(client c);
/* Implementation */
static long long ustime(void) {
struct timeval tv;
long long ust;
gettimeofday(&tv, NULL);
ust = ((long)tv.tv_sec)*1000000;
ust += tv.tv_usec;
return ust;
}
static long long mstime(void) {
struct timeval tv;
long long mst;
gettimeofday(&tv, NULL);
mst = ((long long)tv.tv_sec)*1000;
mst += tv.tv_usec/1000;
return mst;
}
static void freeClient(client c) {
listNode *ln;
aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
redisFree(c->context);
sdsfree(c->obuf);
zfree(c->randptr);
zfree(c);
config.liveclients--;
ln = listSearchKey(config.clients,c);
assert(ln != NULL);
listDelNode(config.clients,ln);
}
static void freeAllClients(void) {
listNode *ln = config.clients->head, *next;
while(ln) {
next = ln->next;
freeClient(ln->value);
ln = next;
}
}
static void resetClient(client c) {
aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
c->written = 0;
c->pending = config.pipeline;
}
static void randomizeClientKey(client c) {
size_t i;
for (i = 0; i < c->randlen; i++) {
char *p = c->randptr[i]+11;
size_t r = random() % config.randomkeys_keyspacelen;
size_t j;
for (j = 0; j < 12; j++) {
*p = '0'+r%10;
r/=10;
p--;
}
}
}
static void clientDone(client c) {
if (config.requests_finished == config.requests) {
freeClient(c);
aeStop(config.el);
return;
}
if (config.keepalive) {
resetClient(c);
} else {
config.liveclients--;
createMissingClients(c);
config.liveclients++;
freeClient(c);
}
}
static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
client c = privdata;
void *reply = NULL;
REDIS_NOTUSED(el);
REDIS_NOTUSED(fd);
REDIS_NOTUSED(mask);
/* Calculate latency only for the first read event. This means that the
* server already sent the reply and we need to parse it. Parsing overhead
* is not part of the latency, so calculate it only once, here. */
if (c->latency < 0) c->latency = ustime()-(c->start);
if (redisBufferRead(c->context) != REDIS_OK) {
fprintf(stderr,"Error: %s\n",c->context->errstr);
exit(1);
} else {
while(c->pending) {
if (redisGetReply(c->context,&reply) != REDIS_OK) {
fprintf(stderr,"Error: %s\n",c->context->errstr);
exit(1);
}
if (reply != NULL) {
if (reply == (void*)REDIS_REPLY_ERROR) {
fprintf(stderr,"Unexpected error reply, exiting...\n");
exit(1);
}
freeReplyObject(reply);
if (c->selectlen) {
size_t j;
/* This is the OK from SELECT. Just discard the SELECT
* from the buffer. */
c->pending--;
sdsrange(c->obuf,c->selectlen,-1);
/* We also need to fix the pointers to the strings
* we need to randomize. */
for (j = 0; j < c->randlen; j++)
c->randptr[j] -= c->selectlen;
c->selectlen = 0;
continue;
}
if (config.requests_finished < config.requests)
config.latency[config.requests_finished++] = c->latency;
c->pending--;
if (c->pending == 0) {
clientDone(c);
break;
}
} else {
break;
}
}
}
}
static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
client c = privdata;
REDIS_NOTUSED(el);
REDIS_NOTUSED(fd);
REDIS_NOTUSED(mask);
/* Initialize request when nothing was written. */
if (c->written == 0) {
/* Enforce upper bound to number of requests. */
if (config.requests_issued++ >= config.requests) {
freeClient(c);
return;
}
/* Really initialize: randomize keys and set start time. */
if (config.randomkeys) randomizeClientKey(c);
c->start = ustime();
c->latency = -1;
}
if (sdslen(c->obuf) > c->written) {
void *ptr = c->obuf+c->written;
int nwritten = write(c->context->fd,ptr,sdslen(c->obuf)-c->written);
if (nwritten == -1) {
if (errno != EPIPE)
fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
freeClient(c);
return;
}
c->written += nwritten;
if (sdslen(c->obuf) == c->written) {
aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
aeCreateFileEvent(config.el,c->context->fd,AE_READABLE,readHandler,c);
}
}
}
/* Create a benchmark client, configured to send the command passed as 'cmd' of
* 'len' bytes.
*
* The command is copied N times in the client output buffer (that is reused
* again and again to send the request to the server) accordingly to the configured
* pipeline size.
*
* Also an initial SELECT command is prepended in order to make sure the right
* database is selected, if needed. The initial SELECT will be discarded as soon
* as the first reply is received.
*
* To create a client from scratch, the 'from' pointer is set to NULL. If instead
* we want to create a client using another client as reference, the 'from' pointer
* points to the client to use as reference. In such a case the following
* information is take from the 'from' client:
*
* 1) The command line to use.
* 2) The offsets of the __rand_int__ elements inside the command line, used
* for arguments randomization.
*
* Even when cloning another client, the SELECT command is automatically prefixed
* if needed. */
static client createClient(char *cmd, size_t len, client from) {
int j;
client c = zmalloc(sizeof(struct _client));
if (config.hostsocket == NULL) {
c->context = redisConnectNonBlock(config.hostip,config.hostport);
} else {
c->context = redisConnectUnixNonBlock(config.hostsocket);
}
if (c->context->err) {
fprintf(stderr,"Could not connect to Redis at ");
if (config.hostsocket == NULL)
fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,c->context->errstr);
else
fprintf(stderr,"%s: %s\n",config.hostsocket,c->context->errstr);
exit(1);
}
/* Suppress hiredis cleanup of unused buffers for max speed. */
c->context->reader->maxbuf = 0;
/* Build the request buffer:
* Queue N requests accordingly to the pipeline size, or simply clone
* the example client buffer. */
c->obuf = sdsempty();
if (config.auth) {
char *buf = NULL;
int len = redisFormatCommand(&buf, "AUTH %s", config.auth);
c->obuf = sdscatlen(c->obuf, buf, len);
free(buf);
}
/* If a DB number different than zero is selected, prefix our request
* buffer with the SELECT command, that will be discarded the first
* time the replies are received, so if the client is reused the
* SELECT command will not be used again. */
if (config.dbnum != 0) {
c->obuf = sdscatprintf(c->obuf,"*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n",
(int)sdslen(config.dbnumstr),config.dbnumstr);
c->selectlen = sdslen(c->obuf);
} else {
c->selectlen = 0;
}
/* Append the request itself. */
if (from) {
c->obuf = sdscatlen(c->obuf,
from->obuf+from->selectlen,
sdslen(from->obuf)-from->selectlen);
} else {
for (j = 0; j < config.pipeline; j++)
c->obuf = sdscatlen(c->obuf,cmd,len);
}
c->written = 0;
c->pending = config.pipeline;
c->randptr = NULL;
c->randlen = 0;
if (c->selectlen) c->pending++;
/* Find substrings in the output buffer that need to be randomized. */
if (config.randomkeys) {
if (from) {
c->randlen = from->randlen;
c->randfree = 0;
c->randptr = zmalloc(sizeof(char*)*c->randlen);
/* copy the offsets. */
for (j = 0; j < (int)c->randlen; j++) {
c->randptr[j] = c->obuf + (from->randptr[j]-from->obuf);
/* Adjust for the different select prefix length. */
c->randptr[j] += c->selectlen - from->selectlen;
}
} else {
char *p = c->obuf;
c->randlen = 0;
c->randfree = RANDPTR_INITIAL_SIZE;
c->randptr = zmalloc(sizeof(char*)*c->randfree);
while ((p = strstr(p,"__rand_int__")) != NULL) {
if (c->randfree == 0) {
c->randptr = zrealloc(c->randptr,sizeof(char*)*c->randlen*2);
c->randfree += c->randlen;
}
c->randptr[c->randlen++] = p;
c->randfree--;
p += 12; /* 12 is strlen("__rand_int__). */
}
}
}
aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
listAddNodeTail(config.clients,c);
config.liveclients++;
return c;
}
static void createMissingClients(client c) {
int n = 0;
while(config.liveclients < config.numclients) {
createClient(NULL,0,c);
/* Listen backlog is quite limited on most systems */
if (++n > 64) {
usleep(50000);
n = 0;
}
}
}
static int compareLatency(const void *a, const void *b) {
return (*(long long*)a)-(*(long long*)b);
}
static void showLatencyReport(void) {
int i, curlat = 0;
float perc, reqpersec;
reqpersec = (float)config.requests_finished/((float)config.totlatency/1000);
if (!config.quiet && !config.csv) {
printf("====== %s ======\n", config.title);
printf(" %d requests completed in %.2f seconds\n", config.requests_finished,
(float)config.totlatency/1000);
printf(" %d parallel clients\n", config.numclients);
printf(" %d bytes payload\n", config.datasize);
printf(" keep alive: %d\n", config.keepalive);
printf("\n");
qsort(config.latency,config.requests,sizeof(long long),compareLatency);
for (i = 0; i < config.requests; i++) {
if (config.latency[i]/1000 != curlat || i == (config.requests-1)) {
curlat = config.latency[i]/1000;
perc = ((float)(i+1)*100)/config.requests;
printf("%.2f%% <= %d milliseconds\n", perc, curlat);
}
}
printf("%.2f requests per second\n\n", reqpersec);
} else if (config.csv) {
printf("\"%s\",\"%.2f\"\n", config.title, reqpersec);
} else {
printf("%s: %.2f requests per second\n", config.title, reqpersec);
}
}
static void benchmark(char *title, char *cmd, int len) {
client c;
config.title = title;
config.requests_issued = 0;
config.requests_finished = 0;
c = createClient(cmd,len,NULL);
createMissingClients(c);
config.start = mstime();
aeMain(config.el);
config.totlatency = mstime()-config.start;
showLatencyReport();
freeAllClients();
}
/* Returns number of consumed options. */
int parseOptions(int argc, const char **argv) {
int i;
int lastarg;
int exit_status = 1;
for (i = 1; i < argc; i++) {
lastarg = (i == (argc-1));
if (!strcmp(argv[i],"-c")) {
if (lastarg) goto invalid;
config.numclients = atoi(argv[++i]);
} else if (!strcmp(argv[i],"-n")) {
if (lastarg) goto invalid;
config.requests = atoi(argv[++i]);
} else if (!strcmp(argv[i],"-k")) {
if (lastarg) goto invalid;
config.keepalive = atoi(argv[++i]);
} else if (!strcmp(argv[i],"-h")) {
if (lastarg) goto invalid;
config.hostip = strdup(argv[++i]);
} else if (!strcmp(argv[i],"-p")) {
if (lastarg) goto invalid;
config.hostport = atoi(argv[++i]);
} else if (!strcmp(argv[i],"-s")) {
if (lastarg) goto invalid;
config.hostsocket = strdup(argv[++i]);
} else if (!strcmp(argv[i],"-a") ) {
if (lastarg) goto invalid;
config.auth = strdup(argv[++i]);
} else if (!strcmp(argv[i],"-d")) {
if (lastarg) goto invalid;
config.datasize = atoi(argv[++i]);
if (config.datasize < 1) config.datasize=1;
if (config.datasize > 1024*1024*1024) config.datasize = 1024*1024*1024;
} else if (!strcmp(argv[i],"-P")) {
if (lastarg) goto invalid;
config.pipeline = atoi(argv[++i]);
if (config.pipeline <= 0) config.pipeline=1;
} else if (!strcmp(argv[i],"-r")) {
if (lastarg) goto invalid;
config.randomkeys = 1;
config.randomkeys_keyspacelen = atoi(argv[++i]);
if (config.randomkeys_keyspacelen < 0)
config.randomkeys_keyspacelen = 0;
} else if (!strcmp(argv[i],"-q")) {
config.quiet = 1;
} else if (!strcmp(argv[i],"--csv")) {
config.csv = 1;
} else if (!strcmp(argv[i],"-l")) {
config.loop = 1;
} else if (!strcmp(argv[i],"-I")) {
config.idlemode = 1;
} else if (!strcmp(argv[i],"-t")) {
if (lastarg) goto invalid;
/* We get the list of tests to run as a string in the form
* get,set,lrange,...,test_N. Then we add a comma before and
* after the string in order to make sure that searching
* for ",testname," will always get a match if the test is
* enabled. */
config.tests = sdsnew(",");
config.tests = sdscat(config.tests,(char*)argv[++i]);
config.tests = sdscat(config.tests,",");
sdstolower(config.tests);
} else if (!strcmp(argv[i],"--dbnum")) {
if (lastarg) goto invalid;
config.dbnum = atoi(argv[++i]);
config.dbnumstr = sdsfromlonglong(config.dbnum);
} else if (!strcmp(argv[i],"--help")) {
exit_status = 0;
goto usage;
} else {
/* Assume the user meant to provide an option when the arg starts
* with a dash. We're done otherwise and should use the remainder
* as the command and arguments for running the benchmark. */
if (argv[i][0] == '-') goto invalid;
return i;
}
}
return i;
invalid:
printf("Invalid option \"%s\" or option argument missing\n\n",argv[i]);
usage:
printf(
"Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n"
" -h <hostname> Server hostname (default 127.0.0.1)\n"
" -p <port> Server port (default 6379)\n"
" -s <socket> Server socket (overrides host and port)\n"
" -a <password> Password for Redis Auth\n"
" -c <clients> Number of parallel connections (default 50)\n"
" -n <requests> Total number of requests (default 10000)\n"
" -d <size> Data size of SET/GET value in bytes (default 2)\n"
" -dbnum <db> SELECT the specified db number (default 0)\n"
" -k <boolean> 1=keep alive 0=reconnect (default 1)\n"
" -r <keyspacelen> Use random keys for SET/GET/INCR, random values for SADD\n"
" Using this option the benchmark will expand the string __rand_int__\n"
" inside an argument with a 12 digits number in the specified range\n"
" from 0 to keyspacelen-1. The substitution changes every time a command\n"
" is executed. Default tests use this to hit random keys in the\n"
" specified range.\n"
" -P <numreq> Pipeline <numreq> requests. Default 1 (no pipeline).\n"
" -q Quiet. Just show query/sec values\n"
" --csv Output in CSV format\n"
" -l Loop. Run the tests forever\n"
" -t <tests> Only run the comma separated list of tests. The test\n"
" names are the same as the ones produced as output.\n"
" -I Idle mode. Just open N idle connections and wait.\n\n"
"Examples:\n\n"
" Run the benchmark with the default configuration against 127.0.0.1:6379:\n"
" $ redis-benchmark\n\n"
" Use 20 parallel clients, for a total of 100k requests, against 192.168.1.1:\n"
" $ redis-benchmark -h 192.168.1.1 -p 6379 -n 100000 -c 20\n\n"
" Fill 127.0.0.1:6379 with about 1 million keys only using the SET test:\n"
" $ redis-benchmark -t set -n 1000000 -r 100000000\n\n"
" Benchmark 127.0.0.1:6379 for a few commands producing CSV output:\n"
" $ redis-benchmark -t ping,set,get -n 100000 --csv\n\n"
" Benchmark a specific command line:\n"
" $ redis-benchmark -r 10000 -n 10000 eval 'return redis.call(\"ping\")' 0\n\n"
" Fill a list with 10000 random elements:\n"
" $ redis-benchmark -r 10000 -n 10000 lpush mylist __rand_int__\n\n"
" On user specified command lines __rand_int__ is replaced with a random integer\n"
" with a range of values selected by the -r option.\n"
);
exit(exit_status);
}
int showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData) {
REDIS_NOTUSED(eventLoop);
REDIS_NOTUSED(id);
REDIS_NOTUSED(clientData);
if (config.liveclients == 0) {
fprintf(stderr,"All clients disconnected... aborting.\n");
exit(1);
}
if (config.csv) return 250;
float dt = (float)(mstime()-config.start)/1000.0;
float rps = (float)config.requests_finished/dt;
printf("%s: %.2f\r", config.title, rps);
fflush(stdout);
return 250; /* every 250ms */
}
/* Return true if the named test was selected using the -t command line
* switch, or if all the tests are selected (no -t passed by user). */
int test_is_selected(char *name) {
char buf[256];
int l = strlen(name);
if (config.tests == NULL) return 1;
buf[0] = ',';
memcpy(buf+1,name,l);
buf[l+1] = ',';
buf[l+2] = '\0';
return strstr(config.tests,buf) != NULL;
}
int main(int argc, const char **argv) {
int i;
char *data, *cmd;
int len;
client c;
srandom(time(NULL));
signal(SIGHUP, SIG_IGN);
signal(SIGPIPE, SIG_IGN);
config.numclients = 50;
config.requests = 10000;
config.liveclients = 0;
config.el = aeCreateEventLoop(1024*10);
aeCreateTimeEvent(config.el,1,showThroughput,NULL,NULL);
config.keepalive = 1;
config.datasize = 3;
config.pipeline = 1;
config.randomkeys = 0;
config.randomkeys_keyspacelen = 0;
config.quiet = 0;
config.csv = 0;
config.loop = 0;
config.idlemode = 0;
config.latency = NULL;
config.clients = listCreate();
config.hostip = "127.0.0.1";
config.hostport = 6379;
config.hostsocket = NULL;
config.tests = NULL;
config.dbnum = 0;
config.auth = NULL;
i = parseOptions(argc,argv);
argc -= i;
argv += i;
config.latency = zmalloc(sizeof(long long)*config.requests);
if (config.keepalive == 0) {
printf("WARNING: keepalive disabled, you probably need 'echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse' for Linux and 'sudo sysctl -w net.inet.tcp.msl=1000' for Mac OS X in order to use a lot of clients/requests\n");
}
if (config.idlemode) {
printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
c = createClient("",0,NULL); /* will never receive a reply */
createMissingClients(c);
aeMain(config.el);
/* and will wait for every */
}
/* Run benchmark with command in the remainder of the arguments. */
if (argc) {
sds title = sdsnew(argv[0]);
for (i = 1; i < argc; i++) {
title = sdscatlen(title, " ", 1);
title = sdscatlen(title, (char*)argv[i], strlen(argv[i]));
}
do {
len = redisFormatCommandArgv(&cmd,argc,argv,NULL);
benchmark(title,cmd,len);
free(cmd);
} while(config.loop);
return 0;
}
/* Run default benchmark suite. */
do {
data = zmalloc(config.datasize+1);
memset(data,'x',config.datasize);
data[config.datasize] = '\0';
if (test_is_selected("ping_inline") || test_is_selected("ping"))
benchmark("PING_INLINE","PING\r\n",6);
if (test_is_selected("ping_mbulk") || test_is_selected("ping")) {
len = redisFormatCommand(&cmd,"PING");
benchmark("PING_BULK",cmd,len);
free(cmd);
}
if (test_is_selected("set")) {
len = redisFormatCommand(&cmd,"SET key:__rand_int__ %s",data);
benchmark("SET",cmd,len);
free(cmd);
}
if (test_is_selected("get")) {
len = redisFormatCommand(&cmd,"GET key:__rand_int__");
benchmark("GET",cmd,len);
free(cmd);
}
if (test_is_selected("incr")) {
len = redisFormatCommand(&cmd,"INCR counter:__rand_int__");
benchmark("INCR",cmd,len);
free(cmd);
}
if (test_is_selected("lpush")) {
len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
benchmark("LPUSH",cmd,len);
free(cmd);
}
if (test_is_selected("lpop")) {
len = redisFormatCommand(&cmd,"LPOP mylist");
benchmark("LPOP",cmd,len);
free(cmd);
}
if (test_is_selected("sadd")) {
len = redisFormatCommand(&cmd,
"SADD myset element:__rand_int__");
benchmark("SADD",cmd,len);
free(cmd);
}
if (test_is_selected("spop")) {
len = redisFormatCommand(&cmd,"SPOP myset");
benchmark("SPOP",cmd,len);
free(cmd);
}
if (test_is_selected("lrange") ||
test_is_selected("lrange_100") ||
test_is_selected("lrange_300") ||
test_is_selected("lrange_500") ||
test_is_selected("lrange_600"))
{
len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
benchmark("LPUSH (needed to benchmark LRANGE)",cmd,len);
free(cmd);
}
if (test_is_selected("lrange") || test_is_selected("lrange_100")) {
len = redisFormatCommand(&cmd,"LRANGE mylist 0 99");
benchmark("LRANGE_100 (first 100 elements)",cmd,len);
free(cmd);
}
if (test_is_selected("lrange") || test_is_selected("lrange_300")) {
len = redisFormatCommand(&cmd,"LRANGE mylist 0 299");
benchmark("LRANGE_300 (first 300 elements)",cmd,len);
free(cmd);
}
if (test_is_selected("lrange") || test_is_selected("lrange_500")) {
len = redisFormatCommand(&cmd,"LRANGE mylist 0 449");
benchmark("LRANGE_500 (first 450 elements)",cmd,len);
free(cmd);
}
if (test_is_selected("lrange") || test_is_selected("lrange_600")) {
len = redisFormatCommand(&cmd,"LRANGE mylist 0 599");
benchmark("LRANGE_600 (first 600 elements)",cmd,len);
free(cmd);
}
if (test_is_selected("mset")) {
const char *argv[21];
argv[0] = "MSET";
for (i = 1; i < 21; i += 2) {
argv[i] = "key:__rand_int__";
argv[i+1] = data;
}
len = redisFormatCommandArgv(&cmd,21,argv,NULL);
benchmark("MSET (10 keys)",cmd,len);
free(cmd);
}
if (!config.csv) printf("\n");
} while(config.loop);
return 0;
}
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