source4/torture/raw/tconrate.c

   1 /*
   2    SMB tree connection rate test
   3
   4    Copyright (C) 2006-2007 James Peach
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "libcli/libcli.h"
  22 #include "libcli/resolve/resolve.h"
  23 #include "torture/smbtorture.h"
  24 #include "lib/cmdline/popt_common.h"
  25 #include "param/param.h"
  26
  27 #include "system/filesys.h"
  28 #include "system/shmem.h"
  29
  30 #define TIME_LIMIT_SECS 30
  31 #define usec_to_sec(s) ((s) / 1000000)
  32
  33 /* Map a shared memory buffer of at least nelem counters. */
  34 static void * map_count_buffer(unsigned nelem, size_t elemsz)
  35 {
  36         void * buf;
  37         size_t bufsz;
  38         size_t pagesz = getpagesize();
  39
  40         bufsz = nelem * elemsz;
  41         bufsz = (bufsz + pagesz) % pagesz; /* round up to pagesz */
  42
  43 #ifdef MAP_ANON
  44         /* BSD */
  45         buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED,
  46                         -1 /* fd */, 0 /* offset */);
  47 #else
  48         buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
  49                         open("/dev/zero", O_RDWR), 0 /* offset */);
  50 #endif
  51
  52         if (buf == MAP_FAILED) {
  53                 printf("failed to map count buffer: %s\n",
  54                                 strerror(errno));
  55                 return NULL;
  56         }
  57
  58         return buf;
  59
  60 }
  61
  62 static int fork_tcon_client(struct torture_context *tctx,
  63                 int *tcon_count, unsigned tcon_timelimit,
  64                 const char *host, const char *share)
  65 {
  66         pid_t child;
  67         struct smbcli_state *cli;
  68         struct timeval end;
  69         struct timeval now;
  70         struct smbcli_options options;
  71         struct smbcli_session_options session_options;
  72
  73         lp_smbcli_options(tctx->lp_ctx, &options);
  74         lp_smbcli_session_options(tctx->lp_ctx, &session_options);
  75
  76         child = fork();
  77         if (child == -1) {
  78                 printf("failed to fork child: %s\n,", strerror(errno));
  79                 return -1;
  80         } else if (child != 0) {
  81                 /* Parent, just return. */
  82                 return 0;
  83         }
  84
  85         /* Child. Just make as many connections as possible within the
  86          * time limit. Don't bother synchronising the child start times
  87          * because it's probably not work the effort, and a bit of startup
  88          * jitter is probably a more realistic test.
  89          */
  90
  91
  92         end = timeval_current();
  93         now = timeval_current();
  94         end.tv_sec += tcon_timelimit;
  95         *tcon_count = 0;
  96
  97         while (timeval_compare(&now, &end) == -1) {
  98                 NTSTATUS status;
  99
 100                 status = smbcli_full_connection(NULL, &cli,
 101                                 host, lp_smb_ports(tctx->lp_ctx), share,
 102                                 NULL, lp_socket_options(tctx->lp_ctx), cmdline_credentials,
 103                                 lp_resolve_context(tctx->lp_ctx),
 104                                 tctx->ev, &options, &session_options,
 105                                 lp_iconv_convenience(tctx->lp_ctx),
 106                                 lp_gensec_settings(tctx, tctx->lp_ctx));
 107
 108                 if (!NT_STATUS_IS_OK(status)) {
 109                         printf("failed to connect to //%s/%s: %s\n",
 110                                 host, share, nt_errstr(status));
 111                         goto done;
 112                 }
 113
 114                 smbcli_tdis(cli);
 115                 talloc_free(cli);
 116
 117                 *tcon_count = *tcon_count + 1;
 118                 now = timeval_current();
 119         }
 120
 121 done:
 122         exit(0);
 123 }
 124
 125 static bool children_remain(void)
 126 {
 127         /* Reap as many children as possible. */
 128         for (;;) {
 129                 pid_t ret = waitpid(-1, NULL, WNOHANG);
 130                 if (ret == 0) {
 131                         /* no children ready */
 132                         return true;
 133                 }
 134                 if (ret == -1) {
 135                         /* no children left. maybe */
 136                         return errno == ECHILD ? false : true;
 137                 }
 138         }
 139
 140         /* notreached */
 141         return false;
 142 }
 143
 144 static double rate_convert_secs(unsigned count,
 145                 const struct timeval *start, const struct timeval *end)
 146 {
 147         return (double)count /
 148                 usec_to_sec((double)usec_time_diff(end, start));
 149 }
 150
 151 /* Test the rate at which the server will accept connections.  */
 152 bool torture_bench_treeconnect(struct torture_context *tctx)
 153 {
 154         const char *host = torture_setting_string(tctx, "host", NULL);
 155         const char *share = torture_setting_string(tctx, "share", NULL);
 156
 157         int timelimit = torture_setting_int(tctx, "timelimit",
 158                                         TIME_LIMIT_SECS);
 159         int nprocs = torture_setting_int(tctx, "nprocs", 4);
 160
 161         int *curr_counts = map_count_buffer(nprocs, sizeof(int));
 162         int *last_counts = talloc_array(NULL, int, nprocs);
 163
 164         struct timeval now, last, start;
 165         int i, delta;
 166
 167         torture_assert(tctx, nprocs > 0, "bad proc count");
 168         torture_assert(tctx, timelimit > 0, "bad timelimit");
 169         torture_assert(tctx, curr_counts, "allocation failure");
 170         torture_assert(tctx, last_counts, "allocation failure");
 171
 172         start = last = timeval_current();
 173         for (i = 0; i < nprocs; ++i) {
 174                 fork_tcon_client(tctx, &curr_counts[i], timelimit, host, share);
 175         }
 176
 177         while (children_remain()) {
 178
 179                 sleep(1);
 180                 now = timeval_current();
 181
 182                 for (i = 0, delta = 0; i < nprocs; ++i) {
 183                         delta += curr_counts[i] - last_counts[i];
 184                 }
 185
 186                 printf("%u connections/sec\n",
 187                         (unsigned)rate_convert_secs(delta, &last, &now));
 188
 189                 memcpy(last_counts, curr_counts, nprocs * sizeof(int));
 190                 last = timeval_current();
 191         }
 192
 193         now = timeval_current();
 194
 195         for (i = 0, delta = 0; i < nprocs; ++i) {
 196                 delta += curr_counts[i];
 197         }
 198
 199         printf("TOTAL: %u connections/sec over %u secs\n",
 200                         (unsigned)rate_convert_secs(delta, &start, &now),
 201                         timelimit);
 202         return true;
 203 }
 204
 205 /* vim: set sts=8 sw=8 : */