| 98836539504bd527d029e12496fbaa343b0adb48 |
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09-Mar-2012 |
Jens Axboe <axboe@kernel.dk> |
Compression buffer fill fix
We need to advance after the zero fill as well.
Reported-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/rand.c
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| 811ac503a6196f13da22565eb165c278988da4da |
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02-Mar-2012 |
Jens Axboe <axboe@kernel.dk> |
Compression fixes
- memset() remainder of buffer instead of copying random segment.
Provides more reliable compression (yes yes, you told me so).
- Allow 100 as well, just means full memset. Make that just set
zero_buffers=1 instead, since we only need to do it once
instead of for every write.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/rand.c
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| 9c42684e32325da26e862280388798343c5f1305 |
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02-Mar-2012 |
Jens Axboe <axboe@kernel.dk> |
Add buffer_compress_percentage
The option is pending testing, so not documented yet.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
/external/fio/lib/rand.c
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| 3545a109a2cfe5ab22969ef453dc049db47f0b68 |
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31-Aug-2011 |
Jens Axboe <jaxboe@fusionio.com> |
Ensure that buffer contents are random across jobs as well
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
/external/fio/lib/rand.c
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| 2615cc4b28e7d0e436a625dff92e6a71ccc6c49b |
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28-Mar-2011 |
Jens Axboe <jaxboe@fusionio.com> |
Switch to using our internal Tausworthe based random generator for offsets
It's both faster and more exhaustive than what is available on
glibc on my test systems. So no downsides, and the upside of having
the same offset generator across all platforms.
This will change the random series, so could alter performance for
your workload since the pattern will be different in sequence. There's
an option to revert to the OS generator, you can add use_us_rand=1
on your job files to retain the old generator offsets.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
/external/fio/lib/rand.c
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| 7d9fb455aadc0c0363489591775496f27f4a560a |
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11-Jan-2011 |
Jens Axboe <jaxboe@fusionio.com> |
When verify fails, dump the good/bad blocks to files
This makes it easy to compare afterwards to see what kind of
corruption was experienced.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
/external/fio/lib/rand.c
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| 637ef8d9f7645135cf4829894d1e3983cd7a042e |
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21-Jun-2010 |
Jens Axboe <jaxboe@fusionio.com> |
Speedup verify random fills by 10-15x
Move the pseudo-random helper into lib/rand.c and use that
from the verify populate as well.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
/external/fio/lib/rand.c
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| 79c94bd37280c76a4e8e01ea008ba1853f7bef9c |
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25-Mar-2010 |
Jens Axboe <jens.axboe@oracle.com> |
Add documentation for the random number generator
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
/external/fio/lib/rand.c
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| 1fbbf72e16c27a6fda636db3891a41cd37dc6666 |
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25-Mar-2010 |
Jens Axboe <jens.axboe@oracle.com> |
First step at speeding up io_u rand refill
Makes it 3x faster here.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
/external/fio/lib/rand.c
|