Okay - using a smaller file, I get better results. I had about 2+ gig available to cache the 700mb file, but I probably had fragmentation issues - I just grabbed the first big file I had.
So its gets a little better for ChannelPread with the smaller file (approx 160mb vs approx 700mb for the old tests). It goes up a bit over 400MB/sec - but oddly, I lose approx 400MB/sec from my SeparateFile score: ramdisk results: config: impl=ChannelPread serial=false nThreads=4 iterations=100 bufsize=1024 poolsize=2 filelen=164956707 answer=-31115427, ms=68940, MB/sec=957.1030287206268 config: impl=SeparateFile serial=false nThreads=4 iterations=100 bufsize=1024 poolsize=2 filelen=164956707 answer=-31115729, ms=45691, MB/sec=1444.106778140115 Mark Miller wrote: > I'm jealous of your 4 3.0Ghz to my 2.0Ghz. > > I was on dynamic scaling frequency and switched to 2.0Ghz hard. > > On ramdisk, my puny 2.0's almost catch you and get a bit over 1800MB/s > with SeparateFile. > > I'm smoked on PooledPread and ChannelPread though. Still sub 500 for > both, even > on the ramdisk. > > Its an absurd comparison though - everyone knows a jackalope is faster > than a koala. > > - Mark > > Yonik Seeley wrote: > >> Here's my results in my quad core phenom, with ondemand CPU freq >> scaling disabled (clocks locked at 3GHz) >> >> Ubuntu 9.04, filesystem=ext4 on 7200RPM IDE drive, testfile=95MB fully >> cached. >> >> Linux odin 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC >> 2009 x86_64 GNU/Linux >> Java(TM) SE Runtime Environment (build 1.6.0_14-b08) >> Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode) >> >> >> config: impl=ClassicFile serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427971, ms=15610, MB/sec=489.99482383087764 >> >> config: impl=SeparateFile serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427672, ms=4115, MB/sec=1858.7652976913728 >> >> config: impl=PooledPread serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427971, ms=6352, MB/sec=1204.15919395466 >> >> config: impl=ChannelFile serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427971, ms=20347, MB/sec=375.91876935174713 >> >> config: impl=ChannelPread serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427971, ms=5189, MB/sec=1474.0449412218154 >> >> config: impl=ChannelTransfer serial=false nThreads=4 iterations=20 >> bufsize=1024 poolsize=2 filelen=95610240 >> answer=1165427971, ms=14794, MB/sec=517.021711504664 >> >> -Yonik >> 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 >> >> >> > > > -- - 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
