From: Rik van Riel <riel@surriel.com>
To: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>,
Matthew Wilcox <willy@infradead.org>,
Peter Zijlstra <peterz@infradead.org>,
David Hildenbrand <david@redhat.com>,
kernel test robot <oliver.sang@intel.com>,
oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
David Rientjes <rientjes@google.com>,
Hugh Dickins <hughd@google.com>, Jann Horn <jannh@google.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Mel Gorman <mgorman@suse.de>,
Muchun Song <muchun.song@linux.dev>,
Peter Xu <peterx@redhat.com>, Will Deacon <will@kernel.org>,
Zach O'Keefe <zokeefe@google.com>,
Dan Carpenter <dan.carpenter@linaro.org>,
Frederic Weisbecker <frederic@kernel.org>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
Subject: Re: [linus:master] [x86] 4817f70c25: stress-ng.mmapaddr.ops_per_sec 63.0% regression
Date: Fri, 31 Jan 2025 16:11:47 -0500 [thread overview]
Message-ID: <0feb6506a91ea47b306ad50143bde375f462af63.camel@surriel.com> (raw)
In-Reply-To: <96f55f36-5cb7-4226-a8ea-374a7891ecff@bytedance.com>
On Thu, 2025-01-30 at 01:33 +0800, Qi Zheng wrote:
>
> stress-ng: info: [671] stressor bogo ops real time usr time
> sys
> time bogo ops/s bogo ops/s
> stress-ng: info: [671] (secs) (secs)
> (secs) (real time) (usr+sys time)
> stress-ng: info: [671] mmapaddr 19803127 60.01 235.20
> 1146.76 330007.29 14329.74
How stable are these numbers?
It looks like the bogo ops/s number without the local_bh_disable
was 17233711, while the number is 19803127 after.
That looks like a 14% speedup.
This is not back to the 28440843 you had before
MMU_GATHER_RCU_TABLE_FREE was enabled unconditionally,
but it does reduce the size of the regression
considerably, from 40% to 31%.
--
All Rights Reversed.
next prev parent reply other threads:[~2025-01-31 21:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-28 9:57 kernel test robot
2025-01-28 10:05 ` David Hildenbrand
2025-01-28 11:31 ` Peter Zijlstra
2025-01-28 11:39 ` David Hildenbrand
2025-01-28 13:28 ` Peter Zijlstra
2025-01-28 13:42 ` David Hildenbrand
2025-01-28 15:59 ` Qi Zheng
2025-01-28 17:06 ` Qi Zheng
2025-01-28 17:51 ` Qi Zheng
2025-01-28 18:35 ` Rik van Riel
2025-01-29 8:14 ` Qi Zheng
2025-01-29 15:23 ` Rik van Riel
2025-01-29 15:59 ` Rik van Riel
2025-01-29 16:12 ` Matthew Wilcox
2025-01-29 16:14 ` Rik van Riel
2025-01-29 16:36 ` Paul E. McKenney
2025-01-29 16:53 ` Rik van Riel
2025-01-29 17:33 ` Qi Zheng
2025-01-29 17:53 ` Qi Zheng
2025-01-29 19:19 ` Paul E. McKenney
2025-01-31 21:11 ` Rik van Riel [this message]
2025-02-01 3:44 ` Qi Zheng
2025-01-29 16:53 ` Frederic Weisbecker
2025-01-29 16:57 ` Rik van Riel
2025-01-29 17:23 ` Frederic Weisbecker
2025-01-29 17:28 ` Paul E. McKenney
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