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wl2077 - scan optimizations

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(recommit in clean clone)


ndb/src/kernel/blocks/dbdih/Dbdih.hpp:
  removed unused variable
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  Always give all nodes in DIGETPRIMREQ
ndb/src/kernel/blocks/dbtc/DbtcMain.cpp:
  Allow readcommited-scans to scan backup fragments
ndb/test/ndbapi/testReadPerf.cpp:
  better printous
This commit is contained in:
unknown
2004-11-19 11:37:16 +01:00
parent f080e78f62
commit 018cac9588
5 changed files with 67 additions and 14 deletions
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35
ndb/docs/wl2077.txt Normal file
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@ -0,0 +1,35 @@
100' * (select 1 from T1 (1M rows) where key = rand());
1 host, 1 ndbd, api co-hosted
results in 1000 rows / sec
wo/reset bounds w/ rb
4.1-read committed a) 4.9 b) 7.4
4.1-read hold lock c) 4.7 d) 6.7
wl2077-read committed 6.4 (+30%) 10.8 (+45%)
wl2077-read hold lock 4.6 (-1%) 6.7 (+ 0%)
-- Comparision e)
serial pk: 10.9'
batched (1000): 59'
serial uniq index: 8.4'
batched (1000): 33'
index range (1000): 186'
----
load) testScanPerf -c 1 -d 1 T1
a) testScanPerf -s 100000 -c 0 -d 0 -a 1 -l 0 -r 2 -q 0 T1
b) testScanPerf -s 100000 -c 0 -d 0 -a 1 -l 0 -r 2 -q 1 T1
c) testScanPerf -s 100000 -c 0 -d 0 -a 1 -l 1 -r 2 -q 0 T1
d) testScanPerf -s 100000 -c 0 -d 0 -a 1 -l 1 -r 2 -q 1 T1
e) testReadPerf -i 25 -c 0 -d 0 T1
--- music join 1db-co 2db-co
4.1 13s 14s
4.1 wo/ blobs 1.7s 3.2s
wl2077 12s 14s
wl2077 wo/ blobs 1.2s (-30%) 2.5s (-22%)

1
ndb/src/kernel/blocks/dbdih/Dbdih.hpp
View File

@ -147,7 +147,6 @@ public:
Uint32 nfConnect;
Uint32 table;
Uint32 userpointer;
Uint32 nodeCount;
BlockReference userblockref;
};
typedef Ptr<ConnectRecord> ConnectRecordPtr;

20
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp
View File

@ -7080,24 +7080,22 @@ void Dbdih::execDIGETPRIMREQ(Signal* signal)
ndbrequire(tabPtr.p->tabStatus == TabRecord::TS_ACTIVE);
connectPtr.i = signal->theData[0];
if(connectPtr.i != RNIL){
if(connectPtr.i != RNIL)
{
jam();
ptrCheckGuard(connectPtr, cconnectFileSize, connectRecord);
ndbrequire(connectPtr.p->connectState == ConnectRecord::INUSE);
getFragstore(tabPtr.p, fragId, fragPtr);
connectPtr.p->nodeCount = extractNodeInfo(fragPtr.p, connectPtr.p->nodes);
signal->theData[0] = connectPtr.p->userpointer;
signal->theData[1] = passThrough;
signal->theData[2] = connectPtr.p->nodes[0];
sendSignal(connectPtr.p->userblockref, GSN_DIGETPRIMCONF, signal, 3, JBB);
return;
}//if
//connectPtr.i == RNIL -> question without connect record
}
else
{
jam();
signal->theData[0] = RNIL;
}
Uint32 nodes[MAX_REPLICAS];
getFragstore(tabPtr.p, fragId, fragPtr);
Uint32 count = extractNodeInfo(fragPtr.p, nodes);
signal->theData[0] = RNIL;
signal->theData[1] = passThrough;
signal->theData[2] = nodes[0];
signal->theData[3] = nodes[1];

14
ndb/src/kernel/blocks/dbtc/DbtcMain.cpp
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@ -8944,6 +8944,20 @@ void Dbtc::execDIGETPRIMCONF(Signal* signal)
scanptr.i = scanFragptr.p->scanRec;
ptrCheckGuard(scanptr, cscanrecFileSize, scanRecord);
if(ScanFragReq::getReadCommittedFlag(scanptr.p->scanRequestInfo))
{
jam();
Uint32 max = 3+signal->theData[6];
Uint32 nodeid = getOwnNodeId();
for(Uint32 i = 3; i<max; i++)
if(signal->theData[i] == nodeid)
{
jam();
tnodeid = nodeid;
break;
}
}
{
/**
* Check table

11
ndb/test/ndbapi/testReadPerf.cpp
View File

@ -390,8 +390,15 @@ run_read(){
void
print_result(){
int tmp = 1;
tmp *= g_paramters[P_RANGE].value;
tmp *= g_paramters[P_LOOPS].value;
int t, t2;
for(int i = 0; i<P_OP_TYPES; i++){
g_err.println("%s avg: %u us/row", g_ops[i],
(1000*g_times[i])/(g_paramters[P_RANGE].value*g_paramters[P_LOOPS].value));
g_err << g_ops[i] << " avg: "
<< (int)((1000*g_times[i])/tmp)
<< " us/row ("
<< (1000 * tmp)/g_times[i] << " rows / sec)" << endl;
}
}