> For example, Nutch automatically translates such
> clauses into QueryFilters.
Thanks for the excellent pointer Doug! I'll will
definitely be implementing this optimization.
If anyone cares, I did a 1 minute hprof test with the
search server in a servlet container. Here are the
results (sorry about Yahoo's short line length).
-Yonik
resin.hprof.txt: Exclusive Method Times (CPU) (virtual
times)
27390 (37.5%)
java.net.PlainSocketImpl.socketAccept
14885 (20.4%)
org.apache.lucene.index.SegmentTermDocs.skipTo
6700 (9.2%)
org.apache.lucene.index.CompoundFileReader$CSInputStream.rea
dInternal
5810 (8.0%) java.io.UnixFileSystem.list
4785 (6.5%)
org.apache.lucene.store.InputStream.readByte
3315 (4.5%) java.io.RandomAccessFile.readBytes
1302 (1.8%)
java.net.SocketOutputStream.socketWrite0
1004 (1.4%) java.io.RandomAccessFile.seek
546 (0.7%) java.lang.String.intern
336 (0.5%) com.caucho.vfs.WriteStream.print
248 (0.3%)
org.apache.lucene.search.TermScorer.next
236 (0.3%)
org.apache.lucene.queryParser.QueryParser.jj_scan_token
232 (0.3%)
org.apache.lucene.index.SegmentTermEnum.readTerm
228 (0.3%)
org.apache.lucene.search.ConjunctionScorer.score
200 (0.3%)
org.apache.lucene.queryParser.FastCharStream.refill
196 (0.3%)
org.apache.lucene.store.InputStream.readVInt
180 (0.2%)
java.security.AccessController.doPrivileged
172 (0.2%)
org.apache.lucene.search.ConjunctionScorer.doNext
152 (0.2%) java.lang.Object.clone
152 (0.2%)
org.apache.lucene.index.SegmentReader.document
148 (0.2%)
java.lang.Throwable.fillInStackTrace
128 (0.2%)
org.apache.lucene.index.SegmentReader.norms
116 (0.2%)
org.apache.lucene.store.InputStream.readString
112 (0.2%) java.lang.StrictMath.log
108 (0.1%) java.util.LinkedList.addLast
100 (0.1%)
java.net.SocketInputStream.socketRead0
88 (0.1%)
org.apache.lucene.search.ConjunctionScorer.next
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