X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Ftools%2Fpsim.cc;fp=src%2Fceph%2Fsrc%2Ftools%2Fpsim.cc;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=90e6fb95899fb27f775e4f3b2e45bb8d4875ddf4;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git

diff --git a/src/ceph/src/tools/psim.cc b/src/ceph/src/tools/psim.cc
deleted file mode 100644
index 90e6fb9..0000000
--- a/src/ceph/src/tools/psim.cc
+++ /dev/null
@@ -1,117 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "osd/OSDMap.h"
-#include "include/buffer.h"
-
-int main(int argc, char **argv)
-{
-  /*
-   * you need to create a suitable osdmap first.  e.g., for 40 osds, 
-   * $ ./osdmaptool --createsimple 40 --clobber .ceph_osdmap
-   */
-  bufferlist bl;
-  std::string error;
-  if (bl.read_file(".ceph_osdmap", &error)) {
-    cout << argv[0] << ": error reading .ceph_osdmap: " << error << std::endl;
-    return 1;
-  }
-  OSDMap osdmap;
-
-  try {
-    osdmap.decode(bl);
-  } catch (ceph::buffer::end_of_buffer &eob) {
-    cout << "Exception (end_of_buffer) in decode(), exit." << std::endl;
-    exit(1);
-  }
-
-  //osdmap.set_primary_affinity(0, 0x8000);
-  //osdmap.set_primary_affinity(3, 0);
-
-  int n = osdmap.get_max_osd();
-  int count[n];
-  int first_count[n];
-  int primary_count[n];
-  int size[4];
-
-  memset(count, 0, sizeof(count));
-  memset(first_count, 0, sizeof(first_count));
-  memset(primary_count, 0, sizeof(primary_count));
-  memset(size, 0, sizeof(size));
-
-  for (int i=0; i<n; i++) {
-    osdmap.set_state(i, osdmap.get_state(i) | CEPH_OSD_UP);
-    //if (i<12)
-      osdmap.set_weight(i, CEPH_OSD_IN);
-  }
-
-  //pg_pool_t *p = (pg_pool_t *)osdmap.get_pg_pool(0);
-  //p->type = pg_pool_t::TYPE_ERASURE;
-
-  for (int n = 0; n < 10; n++) {   // namespaces
-    char nspace[20];
-    snprintf(nspace, sizeof(nspace), "n%d", n);
-  for (int f = 0; f < 5000; f++) {  // files
-    for (int b = 0; b < 4; b++) {   // blocks
-      char foo[20];
-      snprintf(foo, sizeof(foo), "%d.%d", f, b);
-      object_t oid(foo);
-      ceph_object_layout l = osdmap.make_object_layout(oid, 0, nspace);
-      vector<int> osds;
-      pg_t pgid = pg_t(l.ol_pgid);
-      //pgid.u.ps = f * 4 + b;
-      int primary;
-      osdmap.pg_to_acting_osds(pgid, &osds, &primary);
-      size[osds.size()]++;
-#if 0
-      if (0) {
-	hash<object_t> H;
-	int x = H(oid);
-	x = ceph_stable_mod(x, 1023, 1023);
-	int s = crush_hash32(x) % 15;
-	//cout << "ceph_psim: x = " << x << " s = " << s << std::endl;
-	//osds[0] = s;
-      }
-#endif
-      //osds[0] = crush_hash32(f) % n;
-      //cout << "oid " << oid << " pgid " << pgid << " on " << osds << std::endl;
-      for (unsigned i=0; i<osds.size(); i++) {
-	//cout << " rep " << i << " on " << osds[i] << std::endl;
-	count[osds[i]]++;
-      }
-      if (osds.size())
-	first_count[osds[0]]++;
-      if (primary >= 0)
-	primary_count[primary]++;
-    }
-  }
-  }
-
-  uint64_t avg = 0;
-  for (int i=0; i<n; i++) {
-    cout << "osd." << i << "\t" << count[i]
-	 << "\t" << first_count[i]
-	 << "\t" << primary_count[i]
-	 << std::endl;
-    avg += count[i];
-  }
-  avg /= n;
-  double dev = 0;
-  for (int i=0; i<n; i++)
-    dev += (avg - count[i]) * (avg - count[i]);
-  dev /= n;
-  dev = sqrt(dev);
-
-  double pgavg = (double)osdmap.get_pg_pool(0)->get_pg_num() / (double)n;
-  double edev = sqrt(pgavg) * (double)avg / pgavg;
-  cout << " avg " << avg
-       << " stddev " << dev
-       << " (expected " << edev << ")"
-       << " (indep object placement would be " << sqrt(avg) << ")" << std::endl;
-
-  for (int i=0; i<4; i++) {
-    cout << "size" << i << "\t" << size[i] << std::endl;
-  }
-  
-  return 0;
-}