From: Ryan Hardin <ryan.hardin@nutanix.com>
Date: Mon, 18 Oct 2021 20:43:22 +0000 (-0400)
Subject: Use min_bs in rate_process=poisson
X-Git-Tag: fio-3.29~52^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d6299558d4e1e720056a10c13794c1016239b3aa;p=fio.git

Use min_bs in rate_process=poisson

This fixes an issue where IOPS targets were not met
when the `bs` parameter was not given explicitly, such
as when using `bssplit`.

Fixes #1290

Signed-off-by: Ryan Hardin <ryan.hardin@nutanix.com>
---

diff --git a/backend.c b/backend.c
index 2f463293..e2ffec51 100644
--- a/backend.c
+++ b/backend.c
@@ -836,7 +836,7 @@ static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
 	if (td->o.rate_process == RATE_PROCESS_POISSON) {
 		uint64_t val, iops;
 
-		iops = bps / td->o.bs[ddir];
+		iops = bps / td->o.min_bs[ddir];
 		val = (int64_t) (1000000 / iops) *
 				-logf(__rand_0_1(&td->poisson_state[ddir]));
 		if (val) {