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Renaud Delbru commented on LUCENE-1410:
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Here some results on the perofrmance of
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Michael McCandless commented on LUCENE-1410:
Thanks for sharing these thorough
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Renaud Delbru commented on LUCENE-1410:
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Curious that PFOR/FOR don't do well
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Paul Elschot commented on LUCENE-1410:
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I think the mixed performance results for
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Renaud Delbru commented on LUCENE-1410:
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The fact that S9 is already doing
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Renaud Delbru commented on LUCENE-1410:
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Just an update,
I just executed the same
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Paul Elschot commented on LUCENE-1410:
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bq. I thought that removing the IntBuffer and
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Renaud Delbru commented on LUCENE-1410:
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I am reporting here some experiments I
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Renaud Delbru commented on LUCENE-1410:
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When performing some tests on PFOR, I have
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Paul Elschot commented on LUCENE-1410:
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That might indeed be a bug.
In general the
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Renaud Delbru commented on LUCENE-1410:
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In general the
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Paul Elschot commented on LUCENE-1410:
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bq. Why not just computing the index (in the
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Michael McCandless commented on LUCENE-1410:
bq. So why not encode the
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Paul Elschot commented on LUCENE-1410:
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I opened LUCENE-2232 to use VShort for
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Paul Elschot commented on LUCENE-1410:
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Zhang, 2008, see above, reports this:
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Renaud Delbru commented on LUCENE-1410:
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The only concern I have is that the
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Paul Elschot commented on LUCENE-1410:
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There is a margin indeed, but it depends on
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Renaud Delbru commented on LUCENE-1410:
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On another aspect, why is the PFOR/FOR is
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Paul Elschot commented on LUCENE-1410:
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The only reason why the number of compressed
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Renaud Delbru commented on LUCENE-1410:
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Hi,
I have performed some benchmarks using
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Paul Elschot commented on LUCENE-1410:
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Did you see any effect of the JIT? This is
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Renaud Delbru commented on LUCENE-1410:
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Did you see any effect of the JIT?
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Paul Elschot commented on LUCENE-1410:
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In the first benchmark, I was not
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Paul Elschot commented on LUCENE-1410:
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To encode the exceptions as suggested by
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Eks Dev commented on LUCENE-1410:
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Mike,
That is definitely the way to go, distribution
Eks,
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Eks Dev commented on LUCENE-1410:
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Mike,
That is definitely the way to
October, 2009 23:33:03
Subject: Re: [jira] Commented: (LUCENE-1410) PFOR implementation
Eks,
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Eks Dev commented on LUCENE
-dev@lucene.apache.org
Sent: Tuesday, 6 October, 2009 23:59:12
Subject: Re: [jira] Commented: (LUCENE-1410) PFOR implementation
Paul,
the point I was trying to make with this example was extreme, but realistic.
Imagine 100Mio docs, sorted on field user_rights, a term user_rights:XX
selects 40Mio
: Re: [jira] Commented: (LUCENE-1410) PFOR implementation
Eks,
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Eks Dev commented on LUCENE-1410
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Paul Elschot commented on LUCENE-1410:
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A very recent paper with some improvements to
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Eks Dev commented on LUCENE-1410:
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It looks like Google went there as well (Block
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Paul Elschot commented on LUCENE-1410:
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The encoding in the google research slides is
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Paul Elschot commented on LUCENE-1410:
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I'd like to split off the performance test
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Paul Elschot commented on LUCENE-1410:
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I've been at this quite irregularly. I'm
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Michael McCandless commented on LUCENE-1410:
bq. It should really make a
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Paul Elschot commented on LUCENE-1410:
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So there's roughly a factor 2 between PFOR
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Paul Elschot commented on LUCENE-1410:
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bq. I'm trying now to get a rudimentary test
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Paul Elschot commented on LUCENE-1410:
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The strange behaviour at 9 bits I reported
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Michael McCandless commented on LUCENE-1410:
Paul, in decompress I added
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Paul Elschot commented on LUCENE-1410:
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Did you also move to relative addressing in
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Michael McCandless commented on LUCENE-1410:
Another thing that bit me was
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Michael McCandless commented on LUCENE-1410:
bq. That means there is quite a
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Paul Elschot commented on LUCENE-1410:
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I can't see the .tgz attachment at the
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Michael McCandless commented on LUCENE-1410:
bq. One detail on the generated
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Paul Elschot commented on LUCENE-1410:
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bq. Did you also switch to relative getInts?
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Michael McCandless commented on LUCENE-1410:
bq. The only concern I have
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Paul Elschot commented on LUCENE-1410:
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bq. Or... is this because a full block
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Michael McCandless commented on LUCENE-1410:
bq. As for decompression speed,
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Paul Elschot commented on LUCENE-1410:
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I'm working on the 10 right now, but I'm
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Paul Elschot commented on LUCENE-1410:
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Q: Can you add a method that figures out the
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Paul Elschot commented on LUCENE-1410:
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Q: I'm using fixed 6-bit frame size. Can you
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Michael McCandless commented on LUCENE-1410:
bq. A: PFor.getNumFrameBits()
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Otis Gospodnetic commented on LUCENE-1410:
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For people not intimately familiar
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Michael McCandless commented on LUCENE-1410:
There's also this recent
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Paul Elschot commented on LUCENE-1410:
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Q: We should look at the asm that's produced?
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Michael McCandless commented on LUCENE-1410:
{quote}
Q: We should look at the
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Paul Elschot commented on LUCENE-1410:
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The number of bits is not really informative,
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Paul Elschot commented on LUCENE-1410:
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I wrote: The number of bits is not really
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Paul Elschot commented on LUCENE-1410:
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Sorry about the mistake in the patch, a
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Paul Elschot commented on LUCENE-1410:
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Another detail about the decompression
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