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init: seed repeatable jobs differently
author
Jens Axboe
<axboe@fb.com>
Fri, 18 Mar 2016 16:07:16 +0000
(09:07 -0700)
committer
Jens Axboe
<axboe@fb.com>
Fri, 18 Mar 2016 16:07:16 +0000
(09:07 -0700)
Factor in the job number for the stock random seeds, so we don't
generate the same patterns for identical jobs.
Signed-off-by: Jens Axboe <axboe@fb.com>
init.c
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diff --git
a/init.c
b/init.c
index 9052addc9c7ff2117e557ad74ca5f90096f5e139..cc33bf06d60dd2c340dcfaa2410cc325cd4db446 100644
(file)
--- a/
init.c
+++ b/
init.c
@@
-1079,7
+1079,7
@@
static int setup_random_seeds(struct thread_data *td)
seed *= 0x9e370001UL;
for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
- td->rand_seeds[i] = seed;
+ td->rand_seeds[i] = seed
* td->thread_number + i
;
seed *= 0x9e370001UL;
}