linux-kernel - [PATCH tip/core/rcu 21/30] refperf: Adjust refperf.loop default value

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Message-Id: <20200623003013.26252-21-paulmck@kernel.org>
Date:   Mon, 22 Jun 2020 17:30:04 -0700
From:   paulmck@...nel.org
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH tip/core/rcu 21/30] refperf: Adjust refperf.loop default value

From: "Paul E. McKenney" <paulmck@...nel.org>

With the various measurement optimizations, 10,000 loops normally
suffices.  This commit therefore reduces the refperf.loops default value
from 10,000,000 to 10,000.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/refperf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/refperf.c b/kernel/rcu/refperf.c
index 57a750b..063eeb0 100644
--- a/kernel/rcu/refperf.c
+++ b/kernel/rcu/refperf.c
@@ -61,7 +61,7 @@ torture_param(int, verbose, 0, "Enable verbose debugging printk()s");
 torture_param(int, holdoff, IS_BUILTIN(CONFIG_RCU_REF_PERF_TEST) ? 10 : 0,
 	      "Holdoff time before test start (s)");
 // Number of loops per experiment, all readers execute operations concurrently.
-torture_param(long, loops, 10000000, "Number of loops per experiment.");
+torture_param(long, loops, 10000, "Number of loops per experiment.");
 // Number of readers, with -1 defaulting to about 75% of the CPUs.
 torture_param(int, nreaders, -1, "Number of readers, -1 for 75% of CPUs.");
 // Number of runs.
-- 
2.9.5