monero/external/unbound/testcode/perf.c
Erik de Castro Lopo a85b5759f3 Upgrade unbound library
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).
2017-06-17 23:04:00 +10:00

654 lines
16 KiB
C

/*
* testcode/perf.c - debug program to estimate name server performance.
*
* Copyright (c) 2008, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* 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 the NLNET LABS 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
* HOLDER 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.
*/
/**
* \file
*
* This program estimates DNS name server performance.
*/
#include "config.h"
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <signal.h>
#include "util/log.h"
#include "util/locks.h"
#include "util/net_help.h"
#include "util/data/msgencode.h"
#include "util/data/msgreply.h"
#include "util/data/msgparse.h"
#include "sldns/sbuffer.h"
#include "sldns/wire2str.h"
#include "sldns/str2wire.h"
#include <sys/time.h>
/** usage information for perf */
static void usage(char* nm)
{
printf("usage: %s [options] server\n", nm);
printf("server: ip address of server, IP4 or IP6.\n");
printf(" If not on port %d add @port.\n", UNBOUND_DNS_PORT);
printf("-d sec duration of test in whole seconds (0: wait for ^C)\n");
printf("-a str query to ask, interpreted as a line from qfile\n");
printf("-f fnm query list to read from file\n");
printf(" every line has format: qname qclass qtype [+-]{E}\n");
printf(" where + means RD set, E means EDNS enabled\n");
printf("-q quiet mode, print only final qps\n");
exit(1);
}
struct perfinfo;
struct perfio;
/** Global info for perf */
struct perfinfo {
/** need to exit */
volatile int exit;
/** all purpose buffer (for UDP send and receive) */
sldns_buffer* buf;
/** destination */
struct sockaddr_storage dest;
/** length of dest socket addr */
socklen_t destlen;
/** when did this time slice start */
struct timeval since;
/** number of queries received in that time */
size_t numrecv;
/** number of queries sent out in that time */
size_t numsent;
/** duration of test in seconds */
int duration;
/** quiet mode? */
int quiet;
/** when did the total test start */
struct timeval start;
/** total number recvd */
size_t total_recv;
/** total number sent */
size_t total_sent;
/** numbers by rcode */
size_t by_rcode[32];
/** number of I/O ports */
size_t io_num;
/** I/O ports array */
struct perfio* io;
/** max fd value in io ports */
int maxfd;
/** readset */
fd_set rset;
/** size of querylist */
size_t qlist_size;
/** allocated size of qlist array */
size_t qlist_capacity;
/** list of query packets (data) */
uint8_t** qlist_data;
/** list of query packets (length of a packet) */
size_t* qlist_len;
/** index into querylist, for walking the list */
size_t qlist_idx;
};
/** I/O port for perf */
struct perfio {
/** id number */
size_t id;
/** file descriptor of socket */
int fd;
/** timeout value */
struct timeval timeout;
/** ptr back to perfinfo */
struct perfinfo* info;
};
/** number of msec between starting io ports */
#define START_IO_INTERVAL 10
/** number of msec timeout on io ports */
#define IO_TIMEOUT 10
/** signal handler global info */
static struct perfinfo* sig_info;
/** signal handler for user quit */
static RETSIGTYPE perf_sigh(int sig)
{
log_assert(sig_info);
if(!sig_info->quiet)
printf("exit on signal %d\n", sig);
sig_info->exit = 1;
}
/** timeval compare, t1 < t2 */
static int
perf_tv_smaller(struct timeval* t1, struct timeval* t2)
{
#ifndef S_SPLINT_S
if(t1->tv_sec < t2->tv_sec)
return 1;
if(t1->tv_sec == t2->tv_sec &&
t1->tv_usec < t2->tv_usec)
return 1;
#endif
return 0;
}
/** timeval add, t1 += t2 */
static void
perf_tv_add(struct timeval* t1, struct timeval* t2)
{
#ifndef S_SPLINT_S
t1->tv_sec += t2->tv_sec;
t1->tv_usec += t2->tv_usec;
while(t1->tv_usec > 1000000) {
t1->tv_usec -= 1000000;
t1->tv_sec++;
}
#endif
}
/** timeval subtract, t1 -= t2 */
static void
perf_tv_subtract(struct timeval* t1, struct timeval* t2)
{
#ifndef S_SPLINT_S
t1->tv_sec -= t2->tv_sec;
if(t1->tv_usec >= t2->tv_usec) {
t1->tv_usec -= t2->tv_usec;
} else {
t1->tv_sec--;
t1->tv_usec = 1000000-(t2->tv_usec-t1->tv_usec);
}
#endif
}
/** setup perf test environment */
static void
perfsetup(struct perfinfo* info)
{
size_t i;
if(gettimeofday(&info->start, NULL) < 0)
fatal_exit("gettimeofday: %s", strerror(errno));
sig_info = info;
if( signal(SIGINT, perf_sigh) == SIG_ERR ||
#ifdef SIGQUIT
signal(SIGQUIT, perf_sigh) == SIG_ERR ||
#endif
#ifdef SIGHUP
signal(SIGHUP, perf_sigh) == SIG_ERR ||
#endif
#ifdef SIGBREAK
signal(SIGBREAK, perf_sigh) == SIG_ERR ||
#endif
signal(SIGTERM, perf_sigh) == SIG_ERR)
fatal_exit("could not bind to signal");
info->io = (struct perfio*)calloc(sizeof(struct perfio), info->io_num);
if(!info->io) fatal_exit("out of memory");
#ifndef S_SPLINT_S
FD_ZERO(&info->rset);
#endif
info->since = info->start;
for(i=0; i<info->io_num; i++) {
info->io[i].id = i;
info->io[i].info = info;
info->io[i].fd = socket(
addr_is_ip6(&info->dest, info->destlen)?
AF_INET6:AF_INET, SOCK_DGRAM, 0);
if(info->io[i].fd == -1) {
#ifndef USE_WINSOCK
fatal_exit("socket: %s", strerror(errno));
#else
fatal_exit("socket: %s",
wsa_strerror(WSAGetLastError()));
#endif
}
if(info->io[i].fd > info->maxfd)
info->maxfd = info->io[i].fd;
#ifndef S_SPLINT_S
FD_SET(FD_SET_T info->io[i].fd, &info->rset);
info->io[i].timeout.tv_usec = ((START_IO_INTERVAL*i)%1000)
*1000;
info->io[i].timeout.tv_sec = (START_IO_INTERVAL*i)/1000;
perf_tv_add(&info->io[i].timeout, &info->since);
#endif
}
}
/** cleanup perf test environment */
static void
perffree(struct perfinfo* info)
{
size_t i;
if(!info) return;
if(info->io) {
for(i=0; i<info->io_num; i++) {
#ifndef USE_WINSOCK
close(info->io[i].fd);
#else
closesocket(info->io[i].fd);
#endif
}
free(info->io);
}
for(i=0; i<info->qlist_size; i++)
free(info->qlist_data[i]);
free(info->qlist_data);
free(info->qlist_len);
}
/** send new query for io */
static void
perfsend(struct perfinfo* info, size_t n, struct timeval* now)
{
ssize_t r;
r = sendto(info->io[n].fd, (void*)info->qlist_data[info->qlist_idx],
info->qlist_len[info->qlist_idx], 0,
(struct sockaddr*)&info->dest, info->destlen);
/*log_hex("send", info->qlist_data[info->qlist_idx],
info->qlist_len[info->qlist_idx]);*/
if(r == -1) {
#ifndef USE_WINSOCK
log_err("sendto: %s", strerror(errno));
#else
log_err("sendto: %s", wsa_strerror(WSAGetLastError()));
#endif
} else if(r != (ssize_t)info->qlist_len[info->qlist_idx]) {
log_err("partial sendto");
}
info->qlist_idx = (info->qlist_idx+1) % info->qlist_size;
info->numsent++;
info->io[n].timeout.tv_sec = IO_TIMEOUT/1000;
info->io[n].timeout.tv_usec = (IO_TIMEOUT%1000)*1000;
perf_tv_add(&info->io[n].timeout, now);
}
/** got reply for io */
static void
perfreply(struct perfinfo* info, size_t n, struct timeval* now)
{
ssize_t r;
r = recv(info->io[n].fd, (void*)sldns_buffer_begin(info->buf),
sldns_buffer_capacity(info->buf), 0);
if(r == -1) {
#ifndef USE_WINSOCK
log_err("recv: %s", strerror(errno));
#else
log_err("recv: %s", wsa_strerror(WSAGetLastError()));
#endif
} else {
info->by_rcode[LDNS_RCODE_WIRE(sldns_buffer_begin(
info->buf))]++;
info->numrecv++;
}
/*sldns_buffer_set_limit(info->buf, r);
log_buf(0, "reply", info->buf);*/
perfsend(info, n, now);
}
/** got timeout for io */
static void
perftimeout(struct perfinfo* info, size_t n, struct timeval* now)
{
/* may not be a dropped packet, this is also used to start
* up the sending IOs */
perfsend(info, n, now);
}
/** print nice stats about qps */
static void
stat_printout(struct perfinfo* info, struct timeval* now,
struct timeval* elapsed)
{
/* calculate qps */
double dt, qps = 0;
#ifndef S_SPLINT_S
dt = (double)(elapsed->tv_sec*1000000 + elapsed->tv_usec) / 1000000;
#endif
if(dt > 0.001)
qps = (double)(info->numrecv) / dt;
if(!info->quiet)
printf("qps: %g\n", qps);
/* setup next slice */
info->since = *now;
info->total_sent += info->numsent;
info->total_recv += info->numrecv;
info->numrecv = 0;
info->numsent = 0;
}
/** wait for new events for performance test */
static void
perfselect(struct perfinfo* info)
{
fd_set rset = info->rset;
struct timeval timeout, now;
int num;
size_t i;
if(gettimeofday(&now, NULL) < 0)
fatal_exit("gettimeofday: %s", strerror(errno));
/* time to exit? */
if(info->duration > 0) {
timeout = now;
perf_tv_subtract(&timeout, &info->start);
if((int)timeout.tv_sec >= info->duration) {
info->exit = 1;
return;
}
}
/* time for stats printout? */
timeout = now;
perf_tv_subtract(&timeout, &info->since);
if(timeout.tv_sec > 0) {
stat_printout(info, &now, &timeout);
}
/* see what is closest port to timeout; or if there is a timeout */
timeout = info->io[0].timeout;
for(i=0; i<info->io_num; i++) {
if(perf_tv_smaller(&info->io[i].timeout, &now)) {
perftimeout(info, i, &now);
return;
}
if(perf_tv_smaller(&info->io[i].timeout, &timeout)) {
timeout = info->io[i].timeout;
}
}
perf_tv_subtract(&timeout, &now);
num = select(info->maxfd+1, &rset, NULL, NULL, &timeout);
if(num == -1) {
if(errno == EAGAIN || errno == EINTR)
return;
log_err("select: %s", strerror(errno));
}
/* handle new events */
for(i=0; num && i<info->io_num; i++) {
if(FD_ISSET(info->io[i].fd, &rset)) {
perfreply(info, i, &now);
num--;
}
}
}
/** show end stats */
static void
perfendstats(struct perfinfo* info)
{
double dt, qps;
struct timeval timeout, now;
int i, lost;
if(gettimeofday(&now, NULL) < 0)
fatal_exit("gettimeofday: %s", strerror(errno));
timeout = now;
perf_tv_subtract(&timeout, &info->since);
stat_printout(info, &now, &timeout);
timeout = now;
perf_tv_subtract(&timeout, &info->start);
dt = (double)(timeout.tv_sec*1000000 + timeout.tv_usec) / 1000000.0;
qps = (double)(info->total_recv) / dt;
lost = (int)(info->total_sent - info->total_recv) - (int)info->io_num;
if(!info->quiet) {
printf("overall time: %g sec\n",
(double)timeout.tv_sec +
(double)timeout.tv_usec/1000000.);
if(lost > 0)
printf("Packets lost: %d\n", (int)lost);
for(i=0; i<(int)(sizeof(info->by_rcode)/sizeof(size_t)); i++)
{
if(info->by_rcode[i] > 0) {
char rc[16];
sldns_wire2str_rcode_buf(i, rc, sizeof(rc));
printf("%d(%5s): %u replies\n",
i, rc, (unsigned)info->by_rcode[i]);
}
}
}
printf("average qps: %g\n", qps);
}
/** perform the performance test */
static void
perfmain(struct perfinfo* info)
{
perfsetup(info);
while(!info->exit) {
perfselect(info);
}
perfendstats(info);
perffree(info);
}
/** parse a query line to a packet into buffer */
static int
qlist_parse_line(sldns_buffer* buf, char* p)
{
char nm[1024], cl[1024], tp[1024], fl[1024];
int r;
int rec = 1, edns = 0;
struct query_info qinfo;
nm[0] = 0; cl[0] = 0; tp[0] = 0; fl[0] = 0;
r = sscanf(p, " %1023s %1023s %1023s %1023s", nm, cl, tp, fl);
if(r != 3 && r != 4)
return 0;
/*printf("nm='%s', cl='%s', tp='%s', fl='%s'\n", nm, cl, tp, fl);*/
if(strcmp(tp, "IN") == 0 || strcmp(tp, "CH") == 0) {
qinfo.qtype = sldns_get_rr_type_by_name(cl);
qinfo.qclass = sldns_get_rr_class_by_name(tp);
} else {
qinfo.qtype = sldns_get_rr_type_by_name(tp);
qinfo.qclass = sldns_get_rr_class_by_name(cl);
}
if(fl[0] == '+') rec = 1;
else if(fl[0] == '-') rec = 0;
else if(fl[0] == 'E') edns = 1;
if((fl[0] == '+' || fl[0] == '-') && fl[1] == 'E')
edns = 1;
qinfo.qname = sldns_str2wire_dname(nm, &qinfo.qname_len);
if(!qinfo.qname)
return 0;
qinfo.local_alias = NULL;
qinfo_query_encode(buf, &qinfo);
sldns_buffer_write_u16_at(buf, 0, 0); /* zero ID */
if(rec) LDNS_RD_SET(sldns_buffer_begin(buf));
if(edns) {
struct edns_data ed;
memset(&ed, 0, sizeof(ed));
ed.edns_present = 1;
ed.udp_size = EDNS_ADVERTISED_SIZE;
/* Set DO bit in all EDNS datagrams ... */
ed.bits = EDNS_DO;
attach_edns_record(buf, &ed);
}
free(qinfo.qname);
return 1;
}
/** grow query list capacity */
static void
qlist_grow_capacity(struct perfinfo* info)
{
size_t newcap = (size_t)((info->qlist_capacity==0)?16:
info->qlist_capacity*2);
uint8_t** d = (uint8_t**)calloc(sizeof(uint8_t*), newcap);
size_t* l = (size_t*)calloc(sizeof(size_t), newcap);
if(!d || !l) fatal_exit("out of memory");
memcpy(d, info->qlist_data, sizeof(uint8_t*)*
info->qlist_capacity);
memcpy(l, info->qlist_len, sizeof(size_t)*
info->qlist_capacity);
free(info->qlist_data);
free(info->qlist_len);
info->qlist_data = d;
info->qlist_len = l;
info->qlist_capacity = newcap;
}
/** setup query list in info */
static void
qlist_add_line(struct perfinfo* info, char* line, int no)
{
if(!qlist_parse_line(info->buf, line)) {
printf("error parsing query %d: %s\n", no, line);
exit(1);
}
sldns_buffer_write_u16_at(info->buf, 0, (uint16_t)info->qlist_size);
if(info->qlist_size + 1 > info->qlist_capacity) {
qlist_grow_capacity(info);
}
info->qlist_len[info->qlist_size] = sldns_buffer_limit(info->buf);
info->qlist_data[info->qlist_size] = memdup(
sldns_buffer_begin(info->buf), sldns_buffer_limit(info->buf));
if(!info->qlist_data[info->qlist_size])
fatal_exit("out of memory");
info->qlist_size ++;
}
/** setup query list in info */
static void
qlist_read_file(struct perfinfo* info, char* fname)
{
char buf[1024];
char *p;
FILE* in = fopen(fname, "r");
int lineno = 0;
if(!in) {
perror(fname);
exit(1);
}
while(fgets(buf, (int)sizeof(buf), in)) {
lineno++;
buf[sizeof(buf)-1] = 0;
p = buf;
while(*p == ' ' || *p == '\t')
p++;
if(p[0] == 0 || p[0] == '\n' || p[0] == ';' || p[0] == '#')
continue;
qlist_add_line(info, p, lineno);
}
printf("Read %s, got %u queries\n", fname, (unsigned)info->qlist_size);
fclose(in);
}
/** getopt global, in case header files fail to declare it. */
extern int optind;
/** getopt global, in case header files fail to declare it. */
extern char* optarg;
/** main program for perf */
int main(int argc, char* argv[])
{
char* nm = argv[0];
int c;
struct perfinfo info;
#ifdef USE_WINSOCK
int r;
WSADATA wsa_data;
#endif
/* defaults */
memset(&info, 0, sizeof(info));
info.io_num = 16;
log_init(NULL, 0, NULL);
log_ident_set("perf");
checklock_start();
#ifdef USE_WINSOCK
if((r = WSAStartup(MAKEWORD(2,2), &wsa_data)) != 0)
fatal_exit("WSAStartup failed: %s", wsa_strerror(r));
#endif
info.buf = sldns_buffer_new(65553);
if(!info.buf) fatal_exit("out of memory");
/* parse the options */
while( (c=getopt(argc, argv, "d:ha:f:q")) != -1) {
switch(c) {
case 'q':
info.quiet = 1;
break;
case 'd':
if(atoi(optarg)==0 && strcmp(optarg, "0")!=0) {
printf("-d not a number %s", optarg);
return 1;
}
info.duration = atoi(optarg);
break;
case 'a':
qlist_add_line(&info, optarg, 0);
break;
case 'f':
qlist_read_file(&info, optarg);
break;
case '?':
case 'h':
default:
usage(nm);
}
}
argc -= optind;
argv += optind;
if(argc != 1) {
printf("error: pass server IP address on commandline.\n");
usage(nm);
}
if(!extstrtoaddr(argv[0], &info.dest, &info.destlen)) {
printf("Could not parse ip: %s\n", argv[0]);
return 1;
}
if(info.qlist_size == 0) {
printf("No queries to make, use -f or -a.\n");
return 1;
}
/* do the performance test */
perfmain(&info);
sldns_buffer_free(info.buf);
#ifdef USE_WINSOCK
WSACleanup();
#endif
checklock_stop();
return 0;
}