It's been a while since I wrote that benchmarker... is it OK that the answer is different? Did you use the same test file?
-Yonik http://www.lucidimagination.com On Tue, Sep 15, 2009 at 2:18 PM, Mark Miller <markrmil...@gmail.com> wrote: > The results: > > config: impl=SeparateFile serial=false nThreads=4 iterations=100 > bufsize=1024 poolsize=2 filelen=730554368 > answer=-282295611, ms=173550, MB/sec=1683.7899579371938 > > config: impl=ChannelFile serial=false nThreads=4 iterations=100 > bufsize=1024 poolsize=2 filelen=730554368 > answer=-282295361, ms=1377768, MB/sec=212.09793463050383 > > config: impl=ChannelPread serial=false nThreads=4 iterations=100 > bufsize=1024 poolsize=2 filelen=730554368 > answer=-282295361, ms=632253, MB/sec=462.19115955163517 > > config: impl=PooledPread serial=false nThreads=4 iterations=100 > bufsize=1024 poolsize=2 filelen=730554368 > answer=-282295361, ms=774664, MB/sec=377.2238637654518 > > ClassicFile was heading for the same fate as ChannelFile. > > > I'll have to check what its like on the file system - but it appears > just ridiculously slower. Even with SeparateFile, All 4 cores are bouncing > from 0-12% independently and really favoring the low end of that. > ChannelPread appears no better. > > There are results from other OS's/setups in the JIRA issue. > > I'm using ext4. > > Uwe Schindler wrote: >> How does a conventional file system compare? >> >> ----- >> Uwe Schindler >> H.-H.-Meier-Allee 63, D-28213 Bremen >> http://www.thetaphi.de >> eMail: u...@thetaphi.de >> >> >>> -----Original Message----- >>> From: Mark Miller [mailto:markrmil...@gmail.com] >>> Sent: Tuesday, September 15, 2009 7:15 PM >>> To: java-user@lucene.apache.org >>> Subject: Re: lucene 2.9.0RC4 slower than 2.4.1? >>> >>> Mark Miller wrote: >>> >>>> Indeed - I just ran the FileReaderTest on a Linux tmpfs ramdisk - with >>>> SeparateFile all 4 of my cores are immediately pinned and remain so. >>>> With ChannelFile, all 4 cores hover 20-30%. >>>> >>>> It would appear it may not be a good idea to use NIOFSDirectory on >>>> >>> ramdisks. >>> >>>> Even still though - it looks like you have a further issue - your Lucene >>>> 2.9 old-api results don't use it, and are still not good. >>>> >>>> >>>> >>> The quick results: >>> >>> ramdisk: sudo mount -t tmpfs tmpfs /tmp/space -o >>> size=1G,nr_inodes=200k,mode=01777 >>> >>> config: impl=SeparateFile serial=false nThreads=4 iterations=100 >>> bufsize=1024 poolsize=2 filelen=730554368 >>> answer=-282295611, ms=173550, MB/sec=1683.7899579371938 >>> >>> config: impl=ChannelFile serial=false nThreads=4 iterations=100 >>> bufsize=1024 poolsize=2 filelen=730554368 >>> answer=-282295361, ms=1377768, MB/sec=212.09793463050383 >>> >>> >>> -- >>> - Mark >>> >>> http://www.lucidimagination.com >>> >>> >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>> >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > > > -- > - Mark > > http://www.lucidimagination.com > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
