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Hudson commented on CASSANDRA-1470:
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Integrated in Cassandra-0.7 #116 (See
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. fadvise approach showed a
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T Jake Luciani commented on CASSANDRA-1470:
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stock 0.7. DirectIO is out IMO
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T Jake Luciani commented on CASSANDRA-1470:
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@Chris
I re-ran the benchmarks
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Hiram Chirino commented on CASSANDRA-1470:
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BTW.. if you guys want to avoid
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Chris Goffinet commented on CASSANDRA-1470:
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Do we have any more benchmarks?
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Jonathan Ellis commented on CASSANDRA-1470:
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so we dropped the direct i/o on
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T Jake Luciani commented on CASSANDRA-1470:
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Pavel,
It looks like it worked
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Pavel Yaskevich commented on CASSANDRA-1470:
Yes. Direct I/O write
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T Jake Luciani commented on CASSANDRA-1470:
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oh sorry was looking at the
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Peter Schuller commented on CASSANDRA-1470:
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Just to clarify then; as jbellis
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Oleg Anastasyev commented on CASSANDRA-1470:
Guys, may be I misunderstand
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T Jake Luciani commented on CASSANDRA-1470:
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.bq see
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. This article is talking
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Peter Schuller commented on CASSANDRA-1470:
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@jake:
Pretty good idea to
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T Jake Luciani commented on CASSANDRA-1470:
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@peter
re (1) in the v12 patch
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Peter Schuller commented on CASSANDRA-1470:
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(1) - great
(2) - i'm pretty
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Peter Schuller commented on CASSANDRA-1470:
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Oh, and one more thing: Just to
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T Jake Luciani commented on CASSANDRA-1470:
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re (2) just following the code
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T Jake Luciani commented on CASSANDRA-1470:
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bq. Oh, and one more thing:
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. see
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Jonathan Ellis commented on CASSANDRA-1470:
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Also: sounds like we should have
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Pavel Yaskevich commented on CASSANDRA-1470:
I have tried to play with
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. Using separate thread for
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Pavel Yaskevich commented on CASSANDRA-1470:
Agree, it will be possible is
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. the region in the file which
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Pavel Yaskevich commented on CASSANDRA-1470:
Yeah, you are correct about
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Jonathan Ellis commented on CASSANDRA-1470:
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does that mean we need to do a
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Chris Goffinet commented on CASSANDRA-1470:
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I am backporting this work to
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Jonathan Ellis commented on CASSANDRA-1470:
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Chris, are you seeing results
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Chris Goffinet commented on CASSANDRA-1470:
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It will only help 50% of the
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Pavel Yaskevich commented on CASSANDRA-1470:
Another possible option here
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Jonathan Ellis commented on CASSANDRA-1470:
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what is being swapped in your
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Pavel Yaskevich commented on CASSANDRA-1470:
I run the same benchmark tests
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Peter Schuller commented on CASSANDRA-1470:
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An interesting question btw is
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Jonathan Ellis commented on CASSANDRA-1470:
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just to clarify: you are waiting
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Pavel Yaskevich commented on CASSANDRA-1470:
Jake:
So problem with JNA
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T Jake Luciani commented on CASSANDRA-1470:
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Johnathan: Yeah, I edited the
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Pavel Yaskevich commented on CASSANDRA-1470:
If you and Jonathan agree on
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Pavel Yaskevich commented on CASSANDRA-1470:
Ok, gotcha. will continue with
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T Jake Luciani commented on CASSANDRA-1470:
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It may actually help as-is. Just
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Jonathan Ellis commented on CASSANDRA-1470:
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rcoli points out that commitlog
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T Jake Luciani commented on CASSANDRA-1470:
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I like Peters suggestion of
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Chris Goffinet commented on CASSANDRA-1470:
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If you are doing
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Chris Goffinet commented on CASSANDRA-1470:
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*Sorry, won't help if commit
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Jonathan Ellis commented on CASSANDRA-1470:
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+1 here for removing unnecessary
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Pavel Yaskevich commented on CASSANDRA-1470:
Ok, I will drop this..
why
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Jonathan Ellis commented on CASSANDRA-1470:
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bq. because it triggers the
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Pavel Yaskevich commented on CASSANDRA-1470:
And sorry - I actually missed
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Pavel Yaskevich commented on CASSANDRA-1470:
It triggers compation of the
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T Jake Luciani commented on CASSANDRA-1470:
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Another minor issue is I can no
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Pavel Yaskevich commented on CASSANDRA-1470:
Thanks Jake! And yes can you
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T Jake Luciani commented on CASSANDRA-1470:
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Well just the JAR. It comes in
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Jonathan Ellis commented on CASSANDRA-1470:
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the reason we haven't made jna a
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Jonathan Ellis commented on CASSANDRA-1470:
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Let's use exceptions rather than
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Pavel Yaskevich commented on CASSANDRA-1470:
Yes, I understand, thanks!
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Jonathan Ellis commented on CASSANDRA-1470:
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I think you could use Lucene's
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Jonathan Ellis commented on CASSANDRA-1470:
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... that's in
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Chris Goffinet commented on CASSANDRA-1470:
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This is the approach I took.
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Chris Goffinet commented on CASSANDRA-1470:
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I think write is needed, for the
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Pavel Yaskevich commented on CASSANDRA-1470:
Thanks for helping guys! I'm
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Jonathan Ellis commented on CASSANDRA-1470:
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Let's start with reading and do
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Pavel Yaskevich commented on CASSANDRA-1470:
Jonathan: I agree about
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Jonathan Ellis commented on CASSANDRA-1470:
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The advantage of allocateDirect
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Pavel Yaskevich commented on CASSANDRA-1470:
Got you point. I will start
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Jonathan Ellis commented on CASSANDRA-1470:
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can you rebase now that
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Chris Goffinet commented on CASSANDRA-1470:
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Pavel: Does this actually work
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Chris Goffinet commented on CASSANDRA-1470:
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Also, please correct me if I am
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Pavel Yaskevich commented on CASSANDRA-1470:
I will check that up again,
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Jonathan Ellis commented on CASSANDRA-1470:
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Do you need direct io on writes
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Chris Goffinet commented on CASSANDRA-1470:
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You need Direct I/O on writes.
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Jonathan Ellis commented on CASSANDRA-1470:
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also, can you add a tryFcntl
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Robert Coli commented on CASSANDRA-1470:
Was looking over this patch and
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Kelvin Kakugawa commented on CASSANDRA-1470:
We just tried to test the v2
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Chris Goffinet commented on CASSANDRA-1470:
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Kelvin,
Let me know what errors
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Peter Schuller commented on CASSANDRA-1470:
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On the commit log direct I/O:
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Jonathan Ellis commented on CASSANDRA-1470:
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It looks like O_DIRECT is the
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Peter Schuller commented on CASSANDRA-1470:
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I do believe posix_fadvise()
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Jonathan Ellis commented on CASSANDRA-1470:
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Can you elaborate? It looks to
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Jonathan Ellis commented on CASSANDRA-1470:
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The best option looks like using
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