Hi,
On 2010.05.10 12:20, rafa wrote:
Well, times;
1 thread = 29 minutes THE WINNER!
4 threads = 93 minutes WoW!
7 threads = 68 minutes
5 Threads = 64 minutes
It seems disk io is the bottle neck. You can try to use memio driver to
create index in memory, and later write it back to disk.
aadd( aThreads, hb_threadStart( @crea(), cAlias,cExpr,
cFileNtx, cFor, nPos, nPosLinea ) )
...
proc crea( cAlias, cExpr, cFileNtx, cFor, nPos, nPosLinea )
Local nContador := 1
hb_dbRequest( cAlias, , , .T.) // Restaura el alias
if empty( cfor )
INDEX ON&(cExpr) TO&(cFileNtx) ;
...
endif
hb_dbDetach( cAlias ) // Libera el alias
return
These crea() threads do not help to do any valuable job. Function
aCreateIndexe() starts a separate crea() thread for each index tag, but
indexes are not created in parallel, because only one thread has
attached area.
Regards,
Mindaugas
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