Clarify spread/lambda of poisson

[fio.git] / fio.h

diff --git a/fio.h b/fio.h
index 5e8ac66686d30753519139f80903a4f3a11281d9..a2b3d9ffbb3da3de952a8f0970cf36815a43e11c 100644 (file)
--- a/fio.h
+++ b/fio.h
@@ -95,12 +95,16 @@ enum {
        FIO_RAND_SEQ_RAND_TRIM_OFF,
        FIO_RAND_START_DELAY,
        FIO_DEDUPE_OFF,
+       FIO_RAND_POISSON_OFF,
        FIO_RAND_NR_OFFS,
 };
 
 enum {
        IO_MODE_INLINE = 0,
-       IO_MODE_OFFLOAD,
+       IO_MODE_OFFLOAD = 1,
+
+       RATE_PROCESS_LINEAR = 0,
+       RATE_PROCESS_POISSON = 1,
 };
 
 /*
@@ -243,6 +247,8 @@ struct thread_data {
        unsigned long rate_blocks[DDIR_RWDIR_CNT];
        unsigned long rate_io_issue_bytes[DDIR_RWDIR_CNT];
        struct timeval lastrate[DDIR_RWDIR_CNT];
+       int64_t last_usec;
+       struct frand_state poisson_state;
 
        /*
         * Enforced rate submission/completion workqueue