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Code Issues Releases Activity

Simple benchmark of moveToFront()

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This commit is contained in:
Mathias Stearn 2010-09-22 17:50:28 -04:00
parent 456493083e
commit 48723d6e10
1 changed files with 30 additions and 0 deletions
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30
s/shardkey.cpp
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@ -20,6 +20,7 @@
#include "chunk.h"
#include "../db/jsobj.h"
#include "../util/unittest.h"
#include "../util/timer.h"
namespace mongo {
@ -196,6 +197,29 @@ namespace mongo {
ret = sk.moveToFront(BSON("z" << 1 << "y" << 1 << "a" << 1 << "b" << 1 << "Z" << 1 << "Y" << 1));
assert(ret.woEqual(BSON("a" << 1 << "b" << 1 << "z" << 1 << "y" << 1 << "Z" << 1 << "Y" << 1)));
}
void moveToFrontBenchmark(int numFields){
BSONObjBuilder bb;
bb.append("_id", 1);
for (int i=0; i < numFields; i++)
bb.append(BSONObjBuilder::numStr(i), 1);
bb.append("key", 1);
BSONObj o = bb.obj();
ShardKeyPattern sk (BSON("key" << 1));
Timer t;
const int iterations = 100*1000;
for (int i=0; i< iterations; i++){
sk.moveToFront(o);
}
const double secs = t.micros() / 1000000.0;
const double ops_per_sec = iterations / secs;
cout << "moveToFront (" << numFields << " fields) secs: " << secs << " ops_per_sec: " << ops_per_sec << endl;
}
void run(){
extractkeytest();
@ -226,6 +250,12 @@ namespace mongo {
testIsPrefixOf();
// add middle multitype tests
moveToFrontTest();
moveToFrontBenchmark(0);
moveToFrontBenchmark(10);
moveToFrontBenchmark(100);
log(1) << "shardKeyTest passed" << endl;
}