| a5a4fdfd44ec1b55ebab7800a931c148540a7324 |
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11-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
zipf: use 64-bit safe hash for zipf/pareto
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/zipf.h
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| 2316296a514711bb388d87b34742c04bb561d986 |
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07-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
zipf: seed zipf/pareto rand with filename hash and job id
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>
/external/fio/lib/zipf.h
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| b2b0b7534d857e4ca22429a9f573791b8e03264c |
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07-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
zipf/pareto: ensure that 0 isn't always the hottest block
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/zipf.h
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| b83da9b55207fccbff58f4cfc68fef5c390a7c95 |
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06-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
zipf: needs inttypes.h
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/zipf.h
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| 925fee33e47f7eb755ee893e87f0de2bd405a8cc |
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06-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
Add pareto distribution randomizer
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/zipf.h
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| e25839d4cb5fefcb5ffce76128a4faedb177e7af |
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06-Nov-2012 |
Jens Axboe <axboe@kernel.dk> |
Add sample zipf distribution randomizer
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>
/external/fio/lib/zipf.h
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