mirror of
https://github.com/ceph/ceph
synced 2025-02-14 14:28:36 +00:00
c80eca7fce
git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@1019 29311d96-e01e-0410-9327-a35deaab8ce9
62 lines
1.0 KiB
C++
62 lines
1.0 KiB
C++
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#include "../Bucket.h"
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using namespace crush;
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#include <iostream>
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#include <vector>
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using namespace std;
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ostream& operator<<(ostream& out, vector<int>& v)
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{
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out << "[";
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for (int i=0; i<v.size(); i++) {
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if (i) out << " ";
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out << v[i];
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}
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out << "]";
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return out;
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}
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int main()
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{
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Hash h(73);
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int ndisks = 0;
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int numrep = 3;
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StrawBucket mb(1);
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/*for (int i=0;i<10;i++)
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mb.add_item(ndisks++, 10);
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*/
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mb.add_item(ndisks++, 1);
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mb.add_item(ndisks++, 1);
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mb.add_item(ndisks++, 10);
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mb.add_item(ndisks++, 10);
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mb.add_item(ndisks++, 100);
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mb.add_item(ndisks++, 1000);
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vector<int> ocount(ndisks);
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vector<int> v(numrep);
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int nplace = 0;
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for (int x=1; x<1000000; x++) {
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//cout << H(x) << "\t" << h(x) << endl;
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for (int i=0; i<numrep; i++) {
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int d = mb.choose_r(x, i, h);
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v[i] = d;
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ocount[d]++;
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nplace++;
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}
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//cout << v << "\t" << endl;//ocount << endl;
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}
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for (int i=0; i<ocount.size(); i++) {
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float f = ocount[i] / (float)nplace;
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cout << "disk " << i << " has " << ocount[i] << " " << f << endl;
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}
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}
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