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We calculate and use nranges as an unsigned long, but that can
be 32-bit on some platforms and hence overflow.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- Try and remove unneeded #include lines
- Try and add #include lines that would allow the files to be built in a
more standalone manner
Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>
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Signed-off-by: Jens Axboe <axboe@fb.com>
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
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We don't want 4 jobs operating on the same file to use the
same hot spots.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Instead of just doing purely random IO where each block is
touched exactly (or close to, depending on random map) once,
add a zipf distribution scheme where a selectable theta
defines the spread and frequency of blocks read/written.
Committing this so I don't lose it. Needs a few changes,
for instance we need to hash the zipf output so that
the spread doesn't always just favor the lower LBA range.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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