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From: Kuan-Wei Chiu <visitorckw@gmail.com>
To: fweimer@redhat.com
Cc: libc-alpha@sourceware.org, adhemerval.zanella@linaro.org,
	goldstein.w.n@gmail.com, Kuan-Wei Chiu <visitorckw@gmail.com>
Subject: [PATCH v2 2/2] stdlib: Adjust the factor in tst-qsort5
Date: Tue,  5 Dec 2023 11:22:07 +0800	[thread overview]
Message-ID: <20231205032207.3183789-3-visitorckw@gmail.com> (raw)
In-Reply-To: <20231205032207.3183789-1-visitorckw@gmail.com>

Adjust the factor in the tst-qsort5 from 4.5 to 3.5 to better align
with the current implementation characteristics. This refinement is
prompted by the adoption of the bottom-up heapsort optimization, as
it significantly reduces the required comparisons.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
---
Changes from v1:
* Adjusted the factor in tst-qsort5 from 4.5 to 3.5.

 stdlib/tst-qsort5.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/tst-qsort5.c b/stdlib/tst-qsort5.c
index d3a88c30f8..63590967a6 100644
--- a/stdlib/tst-qsort5.c
+++ b/stdlib/tst-qsort5.c
@@ -155,7 +155,7 @@ check_one_n (size_t n)
           n, count, factor);
   /* This is an arbitrary factor which is true for the current
      implementation across a wide range of sizes.  */
-  TEST_VERIFY (factor <= 4.5);
+  TEST_VERIFY (factor <= 3.5);
 }
 
 static int
-- 
2.25.1


  parent reply	other threads:[~2023-12-05  3:22 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-02 21:48 [PATCH] stdlib: Optimize number of calls to comparison function Kuan-Wei Chiu
2023-12-04  8:20 ` Florian Weimer
2023-12-04 18:31   ` Kuan-Wei Chiu
2023-12-05 10:44     ` Florian Weimer
2023-12-05 20:00       ` Kuan-Wei Chiu
2023-12-05 20:35     ` Zack Weinberg
2023-12-06 10:21       ` Florian Weimer
2023-12-06 12:51         ` Adhemerval Zanella Netto
2023-12-17 15:42           ` Zack Weinberg
2023-12-17 15:55             ` Florian Weimer
2023-12-17 16:47             ` Kuan-Wei Chiu
2023-12-17 18:02               ` Florian Weimer
2023-12-05  3:22   ` [PATCH v2 0/2] stdlib: Optimize number of calls to comparison function in qsort Kuan-Wei Chiu
2023-12-05  3:22     ` [PATCH v2 1/2] " Kuan-Wei Chiu
2023-12-05  3:22     ` Kuan-Wei Chiu [this message]
2024-02-16  7:08 ` [PATCH] stdlib: Optimize number of calls to comparison function Kuan-Wei Chiu
2024-03-27 19:45   ` Adhemerval Zanella Netto
2024-03-27 19:59     ` Kuan-Wei Chiu
2024-03-27 20:42       ` Adhemerval Zanella Netto

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