X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=clients%2Fmemstat.c;h=0bc365ac8010eabbe6491eb5174cad66e8d5cda3;hb=c79b88bc75d37c933e9d05c83113ccb26ded3683;hp=36ee343e156745baafb45034a4f4271ccb407e76;hpb=7c41f51579dc36df33ec83a743dba8cc1ddc3e3f;p=m6w6%2Flibmemcached

diff --git a/clients/memstat.c b/clients/memstat.c
index 36ee343e..0bc365ac 100644
--- a/clients/memstat.c
+++ b/clients/memstat.c
@@ -1,11 +1,26 @@
+/* LibMemcached
+ * Copyright (C) 2006-2009 Brian Aker
+ * All rights reserved.
+ *
+ * Use and distribution licensed under the BSD license.  See
+ * the COPYING file in the parent directory for full text.
+ *
+ * Summary:
+ *
+ * Authors: 
+ *          Brian Aker
+ *          Toru Maesaka
+ */
+#include "config.h"
+
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/mman.h>
 #include <fcntl.h>
 #include <string.h>
 #include <getopt.h>
+#include <sys/time.h>
 
 #include <libmemcached/memcached.h>
 
@@ -16,24 +31,60 @@
 #define PROGRAM_DESCRIPTION "Output the state of a memcached cluster."
 
 /* Prototypes */
-void options_parse(int argc, char *argv[]);
+static void options_parse(int argc, char *argv[]);
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat);
+static void print_analysis_report(memcached_st *memc,
+                                  memcached_analysis_st *report);
 
 static int opt_verbose= 0;
 static int opt_displayflag= 0;
+static int opt_analyze= 0;
 static char *opt_servers= NULL;
+static char *analyze_mode= NULL;
+
+static struct option long_options[]=
+{
+  {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
+  {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
+  {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
+  {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
+  {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
+  {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
+  {(OPTIONSTRING)"analyze", optional_argument, NULL, OPT_ANALYZE},
+  {0, 0, 0, 0},
+};
+
+
+static memcached_return_t stat_printer(memcached_server_instance_st instance,
+                                       const char *key, size_t key_length,
+                                       const char *value, size_t value_length,
+                                       void *context)
+{
+  static memcached_server_instance_st last= NULL;
+  (void)context;
+
+  if (last != instance)
+  {
+    printf("Server: %s (%u)\n", memcached_server_name(instance),
+           (uint32_t)memcached_server_port(instance));
+    last= instance;
+  }
+
+  printf("\t %.*s: %.*s\n", (int)key_length, key, (int)value_length, value);
+
+  return MEMCACHED_SUCCESS;
+}
 
 int main(int argc, char *argv[])
 {
-  unsigned int x;
-  memcached_return rc;
+  memcached_return_t rc;
   memcached_st *memc;
-  memcached_stat_st *stat;
   memcached_server_st *servers;
-  memcached_server_st *server_list;
 
   options_parse(argc, argv);
+  initialize_sockets();
 
-  if (!opt_servers)
+  if (! opt_servers)
   {
     char *temp;
 
@@ -41,7 +92,8 @@ int main(int argc, char *argv[])
       opt_servers= strdup(temp);
     else
     {
-      fprintf(stderr, "No Servers provided\n");
+      fprintf(stderr, "No Servers provided\n\n");
+      help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, 0);
       exit(1);
     }
   }
@@ -49,75 +101,217 @@ int main(int argc, char *argv[])
   memc= memcached_create(NULL);
 
   servers= memcached_servers_parse(opt_servers);
-  memcached_server_push(memc, servers);
+  rc= memcached_server_push(memc, servers);
   memcached_server_list_free(servers);
 
-  stat= memcached_stat(memc, NULL, &rc);
-
   if (rc != MEMCACHED_SUCCESS && rc != MEMCACHED_SOME_ERRORS)
   {
     printf("Failure to communicate with servers (%s)\n",
-	   memcached_strerror(memc, rc));
+           memcached_strerror(memc, rc));
     exit(1);
   }
 
-  server_list= memcached_server_list(memc);
+  if (opt_analyze)
+  {
+    memcached_stat_st *memc_stat;
+
+    memc_stat= memcached_stat(memc, NULL, &rc);
+
+    if (! memc_stat)
+      exit(-1);
+
+    run_analyzer(memc, memc_stat);
+
+    memcached_stat_free(memc, memc_stat);
+  }
+  else
+  {
+    rc= memcached_stat_execute(memc, NULL, stat_printer, NULL);
+  }
+
+  free(opt_servers);
+
+  memcached_free(memc);
+
+  return rc == MEMCACHED_SUCCESS ? 0: -1;
+}
+
+static void run_analyzer(memcached_st *memc, memcached_stat_st *memc_stat)
+{
+  memcached_return_t rc;
 
-  printf("Listing %u Server\n\n", memcached_server_count(memc));
-  for (x= 0; x < memcached_server_count(memc); x++)
+  if (analyze_mode == NULL)
+  {
+    memcached_analysis_st *report;
+    report= memcached_analyze(memc, memc_stat, &rc);
+    if (rc != MEMCACHED_SUCCESS || report == NULL)
+    {
+      printf("Failure to analyze servers (%s)\n",
+             memcached_strerror(memc, rc));
+      exit(1);
+    }
+    print_analysis_report(memc, report);
+    free(report);
+  }
+  else if (strcmp(analyze_mode, "latency") == 0)
   {
-    char **list;
-    char **ptr;
+    memcached_st **servers;
+    uint32_t flags, server_count= memcached_server_count(memc);
+    uint32_t num_of_tests= 32;
+    const char *test_key= "libmemcached_test_key";
+
+    servers= malloc(sizeof(memcached_st*) * server_count);
+    if (!servers)
+    {
+      fprintf(stderr, "Failed to allocate memory\n");
+      return;
+    }
+
+    for (uint32_t x= 0; x < server_count; x++)
+    {
+      memcached_server_instance_st instance=
+        memcached_server_instance_by_position(memc, x);
+
+      if ((servers[x]= memcached_create(NULL)) == NULL)
+      {
+        fprintf(stderr, "Failed to memcached_create()\n");
+        if (x > 0)
+          memcached_free(servers[0]);
+        x--;
+        for (; x > 0; x--)
+          memcached_free(servers[x]);
 
-    list= memcached_stat_get_keys(memc, &stat[x], &rc);
+        free(servers);
+        return;
+      }
+      memcached_server_add(servers[x],
+                           memcached_server_name(instance),
+                           memcached_server_port(instance));
+    }
+
+    printf("Network Latency Test:\n\n");
+    struct timeval start_time, end_time;
+    uint32_t slowest_server= 0;
+    long elapsed_time, slowest_time= 0;
 
-    printf("Server: %s (%u)\n", memcached_server_name(memc, server_list[x]),
-	   memcached_server_port(memc, server_list[x]));
-    for (ptr= list; *ptr; ptr++)
+    for (uint32_t x= 0; x < server_count; x++)
     {
-      memcached_return rc;
-      char *value= memcached_stat_get_value(memc, &stat[x], *ptr, &rc);
+      memcached_server_instance_st instance=
+        memcached_server_instance_by_position(memc, x);
+      gettimeofday(&start_time, NULL);
+
+      for (uint32_t y= 0; y < num_of_tests; y++)
+      {
+        size_t vlen;
+        char *val= memcached_get(servers[x], test_key, strlen(test_key),
+                                 &vlen, &flags, &rc);
+        if (rc != MEMCACHED_NOTFOUND && rc != MEMCACHED_SUCCESS)
+          break;
+        free(val);
+      }
+      gettimeofday(&end_time, NULL);
+
+      elapsed_time= (long) timedif(end_time, start_time);
+      elapsed_time /= (long) num_of_tests;
 
-      printf("\t %s: %s\n", *ptr, value);
-      free(value);
+      if (elapsed_time > slowest_time)
+      {
+        slowest_server= x;
+        slowest_time= elapsed_time;
+      }
+
+      if (rc != MEMCACHED_NOTFOUND && rc != MEMCACHED_SUCCESS)
+      {
+        printf("\t %s (%d)  =>  failed to reach the server\n",
+               memcached_server_name(instance),
+               memcached_server_port(instance));
+      }
+      else
+      {
+        printf("\t %s (%d)  =>  %ld.%ld seconds\n",
+               memcached_server_name(instance),
+               memcached_server_port(instance),
+               elapsed_time / 1000, elapsed_time % 1000);
+      }
     }
 
-    free(list);
+    if (server_count > 1 && slowest_time > 0)
+    {
+      memcached_server_instance_st slowest=
+        memcached_server_instance_by_position(memc, slowest_server);
+
+      printf("---\n");
+      printf("Slowest Server: %s (%d) => %ld.%ld seconds\n",
+             memcached_server_name(slowest),
+             memcached_server_port(slowest),
+             slowest_time / 1000, slowest_time % 1000);
+    }
     printf("\n");
+
+    for (uint32_t x= 0; x < server_count; x++)
+      memcached_free(servers[x]);
+
+    free(servers);
+    free(analyze_mode);
+  }
+  else
+  {
+    fprintf(stderr, "Invalid Analyzer Option provided\n");
+    free(analyze_mode);
   }
+}
 
-  free(stat);
-  free(opt_servers);
+static void print_analysis_report(memcached_st *memc,
+                                  memcached_analysis_st *report)
+                                  
+{
+  uint32_t server_count= memcached_server_count(memc);
+  memcached_server_instance_st most_consumed_server= memcached_server_instance_by_position(memc, report->most_consumed_server);
+  memcached_server_instance_st least_free_server= memcached_server_instance_by_position(memc, report->least_free_server);
+  memcached_server_instance_st oldest_server= memcached_server_instance_by_position(memc, report->oldest_server);
 
-  memcached_free(memc);
+  printf("Memcached Cluster Analysis Report\n\n");
 
-  return 0;
+  printf("\tNumber of Servers Analyzed         : %u\n", server_count);
+  printf("\tAverage Item Size (incl/overhead)  : %u bytes\n",
+         report->average_item_size);
+
+  if (server_count == 1)
+  {
+    printf("\nFor a detailed report, you must supply multiple servers.\n");
+    return;
+  }
+
+  printf("\n");
+  printf("\tNode with most memory consumption  : %s:%u (%llu bytes)\n",
+         memcached_server_name(most_consumed_server),
+         (uint32_t)memcached_server_port(most_consumed_server),
+         (unsigned long long)report->most_used_bytes);
+  printf("\tNode with least free space         : %s:%u (%llu bytes remaining)\n",
+         memcached_server_name(least_free_server),
+         (uint32_t)memcached_server_port(least_free_server),
+         (unsigned long long)report->least_remaining_bytes);
+  printf("\tNode with longest uptime           : %s:%u (%us)\n",
+         memcached_server_name(oldest_server),
+         (uint32_t)memcached_server_port(oldest_server),
+         report->longest_uptime);
+  printf("\tPool-wide Hit Ratio                : %1.f%%\n", report->pool_hit_ratio);
+  printf("\n");
 }
 
-void options_parse(int argc, char *argv[])
+static void options_parse(int argc, char *argv[])
 {
   memcached_programs_help_st help_options[]=
   {
     {0},
   };
 
-  static struct option long_options[]=
-  {
-    {"version", no_argument, NULL, OPT_VERSION},
-    {"help", no_argument, NULL, OPT_HELP},
-    {"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
-    {"debug", no_argument, &opt_verbose, OPT_DEBUG},
-    {"servers", required_argument, NULL, OPT_SERVERS},
-    {"flag", no_argument, &opt_displayflag, OPT_FLAG},
-    {0, 0, 0, 0},
-  };
-
   int option_index= 0;
   int option_rv;
 
   while (1) 
   {
-    option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
+    option_rv= getopt_long(argc, argv, "Vhvds:a", long_options, &option_index);
     if (option_rv == -1) break;
     switch (option_rv)
     {
@@ -138,6 +332,10 @@ void options_parse(int argc, char *argv[])
     case OPT_SERVERS: /* --servers or -s */
       opt_servers= strdup(optarg);
       break;
+    case OPT_ANALYZE: /* --analyze or -a */
+      opt_analyze= OPT_ANALYZE;
+      analyze_mode= (optarg) ? strdup(optarg) : NULL;
+      break;
     case '?':
       /* getopt_long already printed an error message. */
       exit(1);